/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/array6_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:16:58,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:16:58,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:16:58,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:16:58,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:16:58,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:16:58,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:16:58,713 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 23:16:58,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:16:58,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:16:58,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:16:58,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:16:58,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:16:58,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:16:58,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:16:58,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:16:58,733 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:16:58,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:16:58,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:16:58,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:16:58,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:16:58,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:16:58,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:16:58,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:16:58,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:16:58,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:16:58,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:16:58,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:16:58,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:16:58,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:16:58,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:16:58,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:16:58,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:16:58,962 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:16:58,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-09 23:16:59,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2fc711c8/ad4fa94d0fa6408bbea42d9b5cb3424a/FLAGd63a40967 [2022-01-09 23:16:59,384 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:16:59,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array6_pattern.c [2022-01-09 23:16:59,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2fc711c8/ad4fa94d0fa6408bbea42d9b5cb3424a/FLAGd63a40967 [2022-01-09 23:16:59,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2fc711c8/ad4fa94d0fa6408bbea42d9b5cb3424a [2022-01-09 23:16:59,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:16:59,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:16:59,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:16:59,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:16:59,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:16:59,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b346aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59, skipping insertion in model container [2022-01-09 23:16:59,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:16:59,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:16:59,597 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/array6_pattern.c[1356,1369] [2022-01-09 23:16:59,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:16:59,631 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:16:59,641 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/array6_pattern.c[1356,1369] [2022-01-09 23:16:59,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:16:59,661 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:16:59,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59 WrapperNode [2022-01-09 23:16:59,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:16:59,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:16:59,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:16:59,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:16:59,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,693 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-01-09 23:16:59,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:16:59,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:16:59,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:16:59,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:16:59,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:16:59,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:16:59,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:16:59,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:16:59,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (1/1) ... [2022-01-09 23:16:59,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:16:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:16:59,751 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 23:16:59,760 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 23:16:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:16:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 23:16:59,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 23:16:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:16:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:16:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:16:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:16:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:16:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:16:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:16:59,828 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:16:59,829 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:16:59,941 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:16:59,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:16:59,946 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-09 23:16:59,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:16:59 BoogieIcfgContainer [2022-01-09 23:16:59,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:16:59,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:16:59,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:16:59,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:16:59,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:16:59" (1/3) ... [2022-01-09 23:16:59,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1691e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:16:59, skipping insertion in model container [2022-01-09 23:16:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:16:59" (2/3) ... [2022-01-09 23:16:59,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1691e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:16:59, skipping insertion in model container [2022-01-09 23:16:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:16:59" (3/3) ... [2022-01-09 23:16:59,954 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-01-09 23:16:59,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:16:59,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:16:59,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:16:59,994 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 23:16:59,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:17:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:17:00,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:00,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:00,011 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-01-09 23:17:00,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:00,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333109859] [2022-01-09 23:17:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:00,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:17:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,138 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 23:17:00,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:00,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333109859] [2022-01-09 23:17:00,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333109859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:17:00,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:17:00,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:17:00,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668107180] [2022-01-09 23:17:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:17:00,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:17:00,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:17:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:17:00,229 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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 23:17:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:00,259 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-01-09 23:17:00,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:17:00,262 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 23:17:00,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:00,268 INFO L225 Difference]: With dead ends: 47 [2022-01-09 23:17:00,268 INFO L226 Difference]: Without dead ends: 21 [2022-01-09 23:17:00,271 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 23:17:00,278 INFO L933 BasicCegarLoop]: 28 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, 28 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 23:17:00,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:17:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-09 23:17:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-09 23:17:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-01-09 23:17:00,315 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-01-09 23:17:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:00,315 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-01-09 23:17:00,316 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 23:17:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-01-09 23:17:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-09 23:17:00,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:00,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:00,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:17:00,319 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:00,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-01-09 23:17:00,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:00,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276950769] [2022-01-09 23:17:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:00,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:17:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-09 23:17:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:00,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:00,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276950769] [2022-01-09 23:17:00,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276950769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:17:00,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:17:00,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:17:00,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172996571] [2022-01-09 23:17:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:17:00,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:17:00,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:17:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:17:00,498 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:00,526 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-01-09 23:17:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:17:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-09 23:17:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:00,528 INFO L225 Difference]: With dead ends: 26 [2022-01-09 23:17:00,528 INFO L226 Difference]: Without dead ends: 22 [2022-01-09 23:17:00,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 23:17:00,530 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:00,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:17:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-09 23:17:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-09 23:17:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-09 23:17:00,535 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-01-09 23:17:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:00,537 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-09 23:17:00,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-09 23:17:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-09 23:17:00,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:00,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:00,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:17:00,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-01-09 23:17:00,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:00,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13143306] [2022-01-09 23:17:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:00,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:17:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-09 23:17:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:00,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:00,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13143306] [2022-01-09 23:17:00,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13143306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:17:00,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:17:00,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 23:17:00,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187256448] [2022-01-09 23:17:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:17:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 23:17:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 23:17:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:17:00,683 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:00,738 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-01-09 23:17:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:17:00,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-01-09 23:17:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:00,742 INFO L225 Difference]: With dead ends: 41 [2022-01-09 23:17:00,742 INFO L226 Difference]: Without dead ends: 25 [2022-01-09 23:17:00,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 23:17:00,750 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:00,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:17:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-09 23:17:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-01-09 23:17:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-09 23:17:00,755 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-01-09 23:17:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:00,755 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-09 23:17:00,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-09 23:17:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-09 23:17:00,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:00,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:00,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:17:00,757 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-01-09 23:17:00,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:00,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247712834] [2022-01-09 23:17:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:00,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:00,774 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:00,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526744554] [2022-01-09 23:17:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:00,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:00,776 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 23:17:00,811 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 23:17:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:00,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:17:00,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:17:00,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:17:01,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:01,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247712834] [2022-01-09 23:17:01,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526744554] [2022-01-09 23:17:01,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526744554] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:01,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:01,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-09 23:17:01,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609443696] [2022-01-09 23:17:01,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:01,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 23:17:01,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 23:17:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:17:01,122 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:17:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:01,312 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-01-09 23:17:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-09 23:17:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-01-09 23:17:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:01,314 INFO L225 Difference]: With dead ends: 71 [2022-01-09 23:17:01,315 INFO L226 Difference]: Without dead ends: 43 [2022-01-09 23:17:01,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-09 23:17:01,316 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:01,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-09 23:17:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-01-09 23:17:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-01-09 23:17:01,322 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-01-09 23:17:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:01,322 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-01-09 23:17:01,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:17:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-01-09 23:17:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-09 23:17:01,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:01,324 INFO L514 BasicCegarLoop]: trace histogram [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 23:17:01,354 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 23:17:01,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:01,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-01-09 23:17:01,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:01,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658889772] [2022-01-09 23:17:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:01,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:01,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:01,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741127789] [2022-01-09 23:17:01,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:17:01,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:01,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:01,561 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 23:17:01,585 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 23:17:01,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:17:01,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:01,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 23:17:01,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:01,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:01,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658889772] [2022-01-09 23:17:01,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:01,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741127789] [2022-01-09 23:17:01,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741127789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:01,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:01,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-01-09 23:17:01,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810242371] [2022-01-09 23:17:01,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:01,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:17:01,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:17:01,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:17:01,875 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 23:17:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:02,023 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-09 23:17:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:17:02,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 30 [2022-01-09 23:17:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:02,025 INFO L225 Difference]: With dead ends: 39 [2022-01-09 23:17:02,025 INFO L226 Difference]: Without dead ends: 35 [2022-01-09 23:17:02,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:17:02,026 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:02,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-09 23:17:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-09 23:17:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-01-09 23:17:02,032 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-01-09 23:17:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:02,032 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-01-09 23:17:02,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 23:17:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-01-09 23:17:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-09 23:17:02,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:02,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:02,058 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 23:17:02,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:02,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-01-09 23:17:02,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:02,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010424348] [2022-01-09 23:17:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:02,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:02,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:02,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895083257] [2022-01-09 23:17:02,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:17:02,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:02,265 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 23:17:02,272 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 23:17:02,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-09 23:17:02,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:02,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-09 23:17:02,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:02,440 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 10 treesize of output 8 [2022-01-09 23:17:02,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-09 23:17:02,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-01-09 23:17:02,498 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 33 treesize of output 32 [2022-01-09 23:17:02,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2022-01-09 23:17:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2022-01-09 23:17:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2022-01-09 23:17:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2022-01-09 23:17:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,813 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-01-09 23:17:02,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-01-09 23:17:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:02,834 INFO L353 Elim1Store]: treesize reduction 55, result has 11.3 percent of original size [2022-01-09 23:17:02,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2022-01-09 23:17:04,602 INFO L353 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-01-09 23:17:04,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 325 treesize of output 210 [2022-01-09 23:17:04,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-01-09 23:17:04,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 135 [2022-01-09 23:17:04,673 INFO L353 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-01-09 23:17:04,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 186 [2022-01-09 23:17:04,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,715 INFO L353 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-01-09 23:17:04,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 62 [2022-01-09 23:17:04,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,760 INFO L353 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-01-09 23:17:04,760 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 138 [2022-01-09 23:17:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-09 23:17:04,812 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 17 treesize of output 11 [2022-01-09 23:17:04,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-09 23:17:04,862 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 17 treesize of output 11 [2022-01-09 23:17:04,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 70 [2022-01-09 23:17:04,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:04,974 INFO L353 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-01-09 23:17:04,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 43 [2022-01-09 23:17:06,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:06,450 INFO L353 Elim1Store]: treesize reduction 366, result has 33.8 percent of original size [2022-01-09 23:17:06,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 13 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 128 treesize of output 222 [2022-01-09 23:17:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:07,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:08,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010424348] [2022-01-09 23:17:08,160 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895083257] [2022-01-09 23:17:08,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895083257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:17:08,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:17:08,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-01-09 23:17:08,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228573540] [2022-01-09 23:17:08,161 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:08,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-09 23:17:08,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-09 23:17:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=838, Unknown=1, NotChecked=0, Total=992 [2022-01-09 23:17:08,162 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:08,288 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-01-09 23:17:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-09 23:17:08,289 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-01-09 23:17:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:08,290 INFO L225 Difference]: With dead ends: 59 [2022-01-09 23:17:08,290 INFO L226 Difference]: Without dead ends: 55 [2022-01-09 23:17:08,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=171, Invalid=1018, Unknown=1, NotChecked=0, Total=1190 [2022-01-09 23:17:08,291 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:08,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 191 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 117 Unchecked, 0.0s Time] [2022-01-09 23:17:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-09 23:17:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-01-09 23:17:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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 23:17:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-01-09 23:17:08,300 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-01-09 23:17:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:08,300 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-01-09 23:17:08,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-01-09 23:17:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-09 23:17:08,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:08,302 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:08,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-09 23:17:08,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:08,516 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2022-01-09 23:17:08,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167022561] [2022-01-09 23:17:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:08,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:08,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:08,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967902190] [2022-01-09 23:17:08,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:17:08,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:08,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:08,541 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 23:17:08,569 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 23:17:08,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:17:08,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:08,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-09 23:17:08,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:08,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:08,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167022561] [2022-01-09 23:17:08,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967902190] [2022-01-09 23:17:08,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967902190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:08,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:08,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-09 23:17:08,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217996498] [2022-01-09 23:17:08,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:08,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-09 23:17:08,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-09 23:17:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-09 23:17:08,854 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 23:17:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:08,996 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2022-01-09 23:17:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:17:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 36 [2022-01-09 23:17:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:08,998 INFO L225 Difference]: With dead ends: 67 [2022-01-09 23:17:08,998 INFO L226 Difference]: Without dead ends: 45 [2022-01-09 23:17:08,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-09 23:17:08,999 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 78 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:08,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-09 23:17:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-01-09 23:17:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2022-01-09 23:17:09,005 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 36 [2022-01-09 23:17:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:09,005 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-01-09 23:17:09,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 23:17:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2022-01-09 23:17:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-09 23:17:09,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:09,006 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:09,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:17:09,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:09,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 5 times [2022-01-09 23:17:09,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:09,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329339404] [2022-01-09 23:17:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:09,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:09,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:09,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179391338] [2022-01-09 23:17:09,232 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:17:09,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:09,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:09,233 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 23:17:09,245 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 23:17:09,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-09 23:17:09,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:09,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-09 23:17:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:09,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:09,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:09,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329339404] [2022-01-09 23:17:09,585 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179391338] [2022-01-09 23:17:09,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179391338] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:09,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:09,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-09 23:17:09,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519323632] [2022-01-09 23:17:09,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:09,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-09 23:17:09,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-09 23:17:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-09 23:17:09,588 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 23:17:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:09,736 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-01-09 23:17:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-09 23:17:09,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 36 [2022-01-09 23:17:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:09,737 INFO L225 Difference]: With dead ends: 44 [2022-01-09 23:17:09,737 INFO L226 Difference]: Without dead ends: 40 [2022-01-09 23:17:09,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-01-09 23:17:09,738 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:09,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 95 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-09 23:17:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-09 23:17:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2022-01-09 23:17:09,745 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2022-01-09 23:17:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:09,745 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2022-01-09 23:17:09,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 23:17:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2022-01-09 23:17:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-09 23:17:09,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:09,746 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:09,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-09 23:17:09,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:09,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:09,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 6 times [2022-01-09 23:17:09,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:09,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556687768] [2022-01-09 23:17:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:09,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:09,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:09,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344893306] [2022-01-09 23:17:09,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-09 23:17:09,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:09,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:09,986 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 23:17:09,988 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 23:17:10,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-09 23:17:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:10,175 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 95 conjunts are in the unsatisfiable core [2022-01-09 23:17:10,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:10,210 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 10 treesize of output 8 [2022-01-09 23:17:10,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-09 23:17:10,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-01-09 23:17:10,247 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 33 treesize of output 32 [2022-01-09 23:17:10,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-01-09 23:17:10,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2022-01-09 23:17:10,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-01-09 23:17:10,427 INFO L353 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-01-09 23:17:10,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 102 [2022-01-09 23:17:10,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-01-09 23:17:10,457 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-09 23:17:10,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 79 [2022-01-09 23:17:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-01-09 23:17:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-01-09 23:17:10,525 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-09 23:17:10,525 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 61 treesize of output 51 [2022-01-09 23:17:10,531 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 11 treesize of output 5 [2022-01-09 23:17:10,704 INFO L353 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-01-09 23:17:10,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 120 [2022-01-09 23:17:10,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-01-09 23:17:10,734 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-09 23:17:10,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 89 [2022-01-09 23:17:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 54 treesize of output 63 [2022-01-09 23:17:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:10,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 48 treesize of output 62 [2022-01-09 23:17:10,808 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-09 23:17:10,808 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 67 treesize of output 55 [2022-01-09 23:17:10,813 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 11 treesize of output 5 [2022-01-09 23:17:11,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,629 INFO L353 Elim1Store]: treesize reduction 1088, result has 7.9 percent of original size [2022-01-09 23:17:11,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 76 case distinctions, treesize of input 279 treesize of output 339 [2022-01-09 23:17:11,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-01-09 23:17:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,757 INFO L353 Elim1Store]: treesize reduction 83, result has 3.5 percent of original size [2022-01-09 23:17:11,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 16 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 121 [2022-01-09 23:17:11,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:11,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:17:11,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 115 [2022-01-09 23:17:14,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:14,523 INFO L353 Elim1Store]: treesize reduction 439, result has 27.7 percent of original size [2022-01-09 23:17:14,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 15 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 247 treesize of output 242 [2022-01-09 23:17:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:18,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556687768] [2022-01-09 23:17:18,511 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:18,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344893306] [2022-01-09 23:17:18,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344893306] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:17:18,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:17:18,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-01-09 23:17:18,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086639739] [2022-01-09 23:17:18,513 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:18,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-09 23:17:18,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-09 23:17:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1015, Unknown=2, NotChecked=0, Total=1190 [2022-01-09 23:17:18,514 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:19,278 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-01-09 23:17:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-09 23:17:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-01-09 23:17:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:19,279 INFO L225 Difference]: With dead ends: 71 [2022-01-09 23:17:19,279 INFO L226 Difference]: Without dead ends: 67 [2022-01-09 23:17:19,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=246, Invalid=1474, Unknown=2, NotChecked=0, Total=1722 [2022-01-09 23:17:19,280 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:19,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 162 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 163 Invalid, 0 Unknown, 106 Unchecked, 0.2s Time] [2022-01-09 23:17:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-09 23:17:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2022-01-09 23:17:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 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 23:17:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-01-09 23:17:19,289 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 38 [2022-01-09 23:17:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:19,290 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-01-09 23:17:19,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 22 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 23:17:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-01-09 23:17:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:17:19,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:19,291 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:19,311 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 23:17:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:19,500 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 7 times [2022-01-09 23:17:19,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939585240] [2022-01-09 23:17:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:19,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:19,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399522489] [2022-01-09 23:17:19,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-09 23:17:19,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:19,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:19,511 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 23:17:19,515 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 23:17:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:17:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-09 23:17:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:19,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:19,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:19,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939585240] [2022-01-09 23:17:19,863 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:19,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399522489] [2022-01-09 23:17:19,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399522489] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:19,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:19,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-09 23:17:19,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960752482] [2022-01-09 23:17:19,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:19,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:17:19,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:17:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:17:19,865 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 23:17:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:20,045 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2022-01-09 23:17:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-09 23:17:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 40 [2022-01-09 23:17:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:20,046 INFO L225 Difference]: With dead ends: 95 [2022-01-09 23:17:20,046 INFO L226 Difference]: Without dead ends: 79 [2022-01-09 23:17:20,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2022-01-09 23:17:20,047 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 88 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:20,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 128 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-09 23:17:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2022-01-09 23:17:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 23:17:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-01-09 23:17:20,059 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 40 [2022-01-09 23:17:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:20,060 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-01-09 23:17:20,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 23:17:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-01-09 23:17:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:17:20,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:20,061 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:20,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-09 23:17:20,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:20,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 8 times [2022-01-09 23:17:20,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166499637] [2022-01-09 23:17:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:20,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:20,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:20,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563483150] [2022-01-09 23:17:20,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:17:20,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:20,292 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 23:17:20,293 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 23:17:20,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:17:20,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:20,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-09 23:17:20,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:17:20,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:17:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:17:20,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:17:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166499637] [2022-01-09 23:17:20,599 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:17:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563483150] [2022-01-09 23:17:20,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563483150] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:17:20,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:17:20,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-01-09 23:17:20,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500161801] [2022-01-09 23:17:20,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:17:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:17:20,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:17:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:17:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:17:20,600 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 23:17:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:17:20,803 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2022-01-09 23:17:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 23:17:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 40 [2022-01-09 23:17:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:17:20,804 INFO L225 Difference]: With dead ends: 78 [2022-01-09 23:17:20,804 INFO L226 Difference]: Without dead ends: 74 [2022-01-09 23:17:20,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-01-09 23:17:20,805 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:17:20,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 111 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:17:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-09 23:17:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2022-01-09 23:17:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 23:17:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2022-01-09 23:17:20,817 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 40 [2022-01-09 23:17:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:17:20,817 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2022-01-09 23:17:20,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 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 23:17:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2022-01-09 23:17:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-09 23:17:20,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:17:20,818 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:17:20,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-09 23:17:21,027 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,SelfDestructingSolverStorable10 [2022-01-09 23:17:21,028 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:17:21,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:17:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 9 times [2022-01-09 23:17:21,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:17:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660014161] [2022-01-09 23:17:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:17:21,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:17:21,040 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:17:21,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341154651] [2022-01-09 23:17:21,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:17:21,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:17:21,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:17:21,043 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 23:17:21,044 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 23:17:21,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-09 23:17:21,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:17:21,347 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 108 conjunts are in the unsatisfiable core [2022-01-09 23:17:21,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:17:21,366 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 10 treesize of output 8 [2022-01-09 23:17:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-01-09 23:17:21,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-01-09 23:17:21,413 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 33 treesize of output 32 [2022-01-09 23:17:21,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2022-01-09 23:17:21,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 37 [2022-01-09 23:17:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 72 [2022-01-09 23:17:21,645 INFO L353 Elim1Store]: treesize reduction 32, result has 13.5 percent of original size [2022-01-09 23:17:21,645 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 82 [2022-01-09 23:17:21,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 38 treesize of output 41 [2022-01-09 23:17:21,676 INFO L353 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2022-01-09 23:17:21,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 68 [2022-01-09 23:17:21,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-01-09 23:17:21,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2022-01-09 23:17:21,737 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-09 23:17:21,737 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 50 treesize of output 40 [2022-01-09 23:17:21,742 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 9 treesize of output 5 [2022-01-09 23:17:21,851 INFO L353 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-01-09 23:17:21,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 108 [2022-01-09 23:17:21,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 42 treesize of output 45 [2022-01-09 23:17:21,902 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-09 23:17:21,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 81 [2022-01-09 23:17:21,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,945 INFO L353 Elim1Store]: treesize reduction 90, result has 22.4 percent of original size [2022-01-09 23:17:21,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2022-01-09 23:17:21,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:21,979 INFO L353 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2022-01-09 23:17:21,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 56 [2022-01-09 23:17:22,022 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2022-01-09 23:17:22,063 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-09 23:17:22,064 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 67 treesize of output 55 [2022-01-09 23:17:22,074 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 11 treesize of output 5 [2022-01-09 23:17:22,400 INFO L353 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2022-01-09 23:17:22,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 253 treesize of output 188 [2022-01-09 23:17:22,440 INFO L353 Elim1Store]: treesize reduction 62, result has 15.1 percent of original size [2022-01-09 23:17:22,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 190 [2022-01-09 23:17:22,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,511 INFO L353 Elim1Store]: treesize reduction 133, result has 16.4 percent of original size [2022-01-09 23:17:22,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 190 treesize of output 153 [2022-01-09 23:17:22,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:22,598 INFO L353 Elim1Store]: treesize reduction 175, result has 12.9 percent of original size [2022-01-09 23:17:22,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 132 [2022-01-09 23:17:22,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 [2022-01-09 23:17:22,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-09 23:17:22,646 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 17 treesize of output 11 [2022-01-09 23:17:24,650 INFO L353 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-01-09 23:17:24,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 493 treesize of output 338 [2022-01-09 23:17:24,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-01-09 23:17:24,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 135 [2022-01-09 23:17:24,824 INFO L353 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-01-09 23:17:24,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 347 treesize of output 323 [2022-01-09 23:17:24,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,067 INFO L353 Elim1Store]: treesize reduction 220, result has 19.4 percent of original size [2022-01-09 23:17:25,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 123 treesize of output 179 [2022-01-09 23:17:25,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:25,408 INFO L353 Elim1Store]: treesize reduction 321, result has 24.6 percent of original size [2022-01-09 23:17:25,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 260 treesize of output 339 [2022-01-09 23:17:25,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-09 23:17:25,476 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 17 treesize of output 11 [2022-01-09 23:17:27,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 129 [2022-01-09 23:17:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:17:27,679 INFO L353 Elim1Store]: treesize reduction 112, result has 18.2 percent of original size [2022-01-09 23:17:27,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 124 treesize of output 109 [2022-01-09 23:17:27,804 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-09 23:17:27,805 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 171 treesize of output 149 [2022-01-09 23:17:27,811 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 49 treesize of output 37