/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/array18_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:14:47,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:14:47,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:14:47,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:14:47,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:14:47,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:14:47,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:14:47,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:14:47,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:14:47,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:14:47,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:14:47,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:14:47,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:14:47,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:14:47,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:14:47,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:14:47,607 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:14:47,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:14:47,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:14:47,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:14:47,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:14:47,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:14:47,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:14:47,610 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:14:47,610 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:14:47,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:14:47,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:14:47,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:14:47,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:14:47,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:14:47,844 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:14:47,845 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:14:47,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array18_pattern.c [2022-01-09 23:14:47,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfea1434/75a9795ddb2e467c981359731bd4588d/FLAG71e316680 [2022-01-09 23:14:48,272 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:14:48,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array18_pattern.c [2022-01-09 23:14:48,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfea1434/75a9795ddb2e467c981359731bd4588d/FLAG71e316680 [2022-01-09 23:14:48,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cfea1434/75a9795ddb2e467c981359731bd4588d [2022-01-09 23:14:48,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:14:48,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:14:48,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:14:48,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:14:48,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:14:48,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c94fc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48, skipping insertion in model container [2022-01-09 23:14:48,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:14:48,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:14:48,477 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/array18_pattern.c[1444,1457] [2022-01-09 23:14:48,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:14:48,516 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:14:48,527 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/array18_pattern.c[1444,1457] [2022-01-09 23:14:48,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:14:48,558 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:14:48,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48 WrapperNode [2022-01-09 23:14:48,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:14:48,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:14:48,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:14:48,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:14:48,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,592 INFO L137 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-01-09 23:14:48,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:14:48,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:14:48,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:14:48,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:14:48,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:14:48,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:14:48,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:14:48,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:14:48,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (1/1) ... [2022-01-09 23:14:48,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:14:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:48,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 23:14:48,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 23:14:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:14:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 23:14:48,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 23:14:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:14:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:14:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:14:48,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:14:48,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:14:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:14:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:14:48,746 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:14:48,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:14:48,922 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:14:48,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:14:48,926 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-09 23:14:48,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:14:48 BoogieIcfgContainer [2022-01-09 23:14:48,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:14:48,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:14:48,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:14:48,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:14:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:14:48" (1/3) ... [2022-01-09 23:14:48,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e73f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:14:48, skipping insertion in model container [2022-01-09 23:14:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:14:48" (2/3) ... [2022-01-09 23:14:48,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e73f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:14:48, skipping insertion in model container [2022-01-09 23:14:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:14:48" (3/3) ... [2022-01-09 23:14:48,938 INFO L111 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2022-01-09 23:14:48,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:14:48,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:14:48,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:14:48,975 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:14:48,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:14:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-09 23:14:48,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:48,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:48,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:49,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-01-09 23:14:49,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:49,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937900787] [2022-01-09 23:14:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:49,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 23:14:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:14:49,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:49,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937900787] [2022-01-09 23:14:49,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937900787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:49,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:49,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:14:49,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084472085] [2022-01-09 23:14:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:14:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:14:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:14:49,162 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:14:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:49,178 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-01-09 23:14:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:14:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-09 23:14:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:49,184 INFO L225 Difference]: With dead ends: 63 [2022-01-09 23:14:49,184 INFO L226 Difference]: Without dead ends: 29 [2022-01-09 23:14:49,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:14:49,189 INFO L933 BasicCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:49,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-09 23:14:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-09 23:14:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-01-09 23:14:49,215 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-01-09 23:14:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:49,215 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-01-09 23:14:49,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-09 23:14:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-01-09 23:14:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-09 23:14:49,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:49,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:49,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:14:49,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-01-09 23:14:49,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:49,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623162872] [2022-01-09 23:14:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:49,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:49,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488268433] [2022-01-09 23:14:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:49,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:49,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:49,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:14:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:49,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-09 23:14:49,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 23:14:49,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:49,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623162872] [2022-01-09 23:14:49,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:49,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488268433] [2022-01-09 23:14:49,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488268433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:49,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:49,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:14:49,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088597751] [2022-01-09 23:14:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:14:49,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:14:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:14:49,485 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:49,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:49,514 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-01-09 23:14:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:14:49,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-01-09 23:14:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:49,516 INFO L225 Difference]: With dead ends: 36 [2022-01-09 23:14:49,518 INFO L226 Difference]: Without dead ends: 32 [2022-01-09 23:14:49,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:14:49,519 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 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 23:14:49,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-09 23:14:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-09 23:14:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-01-09 23:14:49,524 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-01-09 23:14:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:49,524 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-01-09 23:14:49,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-01-09 23:14:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-09 23:14:49,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:49,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:49,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:49,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:49,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-01-09 23:14:49,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:49,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348441312] [2022-01-09 23:14:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:49,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:49,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:49,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616027451] [2022-01-09 23:14:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:49,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:49,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:49,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:49,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:14:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:49,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:14:49,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-09 23:14:49,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:49,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:49,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348441312] [2022-01-09 23:14:49,862 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:49,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616027451] [2022-01-09 23:14:49,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616027451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:49,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:49,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 23:14:49,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624494280] [2022-01-09 23:14:49,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:49,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 23:14:49,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 23:14:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:14:49,864 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:49,927 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-01-09 23:14:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 23:14:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 35 [2022-01-09 23:14:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:49,931 INFO L225 Difference]: With dead ends: 67 [2022-01-09 23:14:49,931 INFO L226 Difference]: Without dead ends: 42 [2022-01-09 23:14:49,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-09 23:14:49,932 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:49,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 86 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-09 23:14:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-01-09 23:14:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-01-09 23:14:49,936 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2022-01-09 23:14:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:49,936 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-01-09 23:14:49,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-01-09 23:14:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-09 23:14:49,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:49,937 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:49,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:50,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 23:14:50,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-01-09 23:14:50,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:50,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482166640] [2022-01-09 23:14:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:50,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:50,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648645645] [2022-01-09 23:14:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:50,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:50,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:50,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:50,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:14:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:50,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 23:14:50,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:14:50,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:50,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:50,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482166640] [2022-01-09 23:14:50,291 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:50,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648645645] [2022-01-09 23:14:50,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648645645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:50,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:50,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:14:50,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445429451] [2022-01-09 23:14:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:50,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:14:50,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:14:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:14:50,293 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:50,343 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-01-09 23:14:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:14:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 38 [2022-01-09 23:14:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:50,344 INFO L225 Difference]: With dead ends: 64 [2022-01-09 23:14:50,344 INFO L226 Difference]: Without dead ends: 36 [2022-01-09 23:14:50,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:14:50,345 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 26 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:50,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-09 23:14:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-01-09 23:14:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-01-09 23:14:50,351 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2022-01-09 23:14:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:50,351 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-01-09 23:14:50,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-01-09 23:14:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:14:50,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:50,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:50,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:50,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:50,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-01-09 23:14:50,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823310057] [2022-01-09 23:14:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:50,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:50,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090848700] [2022-01-09 23:14:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:50,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:50,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:50,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:50,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:14:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-09 23:14:50,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:50,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-09 23:14:51,137 INFO L353 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-01-09 23:14:51,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2022-01-09 23:14:51,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-01-09 23:14:51,353 INFO L353 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2022-01-09 23:14:51,354 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 33 treesize of output 14 [2022-01-09 23:14:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:14:51,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:51,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823310057] [2022-01-09 23:14:51,844 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090848700] [2022-01-09 23:14:51,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090848700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:14:51,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:14:51,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-01-09 23:14:51,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858772687] [2022-01-09 23:14:51,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:51,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-09 23:14:51,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-09 23:14:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2022-01-09 23:14:51,846 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:52,228 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2022-01-09 23:14:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-09 23:14:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-01-09 23:14:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:52,230 INFO L225 Difference]: With dead ends: 114 [2022-01-09 23:14:52,231 INFO L226 Difference]: Without dead ends: 89 [2022-01-09 23:14:52,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2022-01-09 23:14:52,232 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:52,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 216 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 242 Invalid, 0 Unknown, 168 Unchecked, 0.2s Time] [2022-01-09 23:14:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-01-09 23:14:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2022-01-09 23:14:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 62 states have internal predecessors, (77), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2022-01-09 23:14:52,247 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 40 [2022-01-09 23:14:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:52,247 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2022-01-09 23:14:52,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 23:14:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2022-01-09 23:14:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:14:52,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:52,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:52,267 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 23:14:52,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:52,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash -700801737, now seen corresponding path program 1 times [2022-01-09 23:14:52,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:52,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24730366] [2022-01-09 23:14:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:52,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:52,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:52,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30729821] [2022-01-09 23:14:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:52,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:52,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:52,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:52,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:14:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:52,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:14:52,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 23:14:52,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:14:52,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:52,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24730366] [2022-01-09 23:14:52,571 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:52,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30729821] [2022-01-09 23:14:52,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30729821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:14:52,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:14:52,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:14:52,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875575575] [2022-01-09 23:14:52,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:14:52,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:14:52,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:14:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:14:52,572 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-09 23:14:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:52,588 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2022-01-09 23:14:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:14:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-01-09 23:14:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:52,591 INFO L225 Difference]: With dead ends: 129 [2022-01-09 23:14:52,591 INFO L226 Difference]: Without dead ends: 94 [2022-01-09 23:14:52,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:14:52,593 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:52,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:14:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-09 23:14:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2022-01-09 23:14:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 66 states have internal predecessors, (81), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2022-01-09 23:14:52,616 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 40 [2022-01-09 23:14:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:52,617 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2022-01-09 23:14:52,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-09 23:14:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2022-01-09 23:14:52,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:14:52,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:52,618 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:52,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:52,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:52,819 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1287607751, now seen corresponding path program 1 times [2022-01-09 23:14:52,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565217905] [2022-01-09 23:14:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:52,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:52,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:52,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249481593] [2022-01-09 23:14:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:52,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:52,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:14:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:14:52,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-09 23:14:52,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:14:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-09 23:14:53,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:53,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565217905] [2022-01-09 23:14:53,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:53,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249481593] [2022-01-09 23:14:53,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249481593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:53,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:53,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-01-09 23:14:53,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139484964] [2022-01-09 23:14:53,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:53,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 23:14:53,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:53,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 23:14:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:14:53,286 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-09 23:14:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:53,582 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2022-01-09 23:14:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-09 23:14:53,583 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2022-01-09 23:14:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:53,584 INFO L225 Difference]: With dead ends: 195 [2022-01-09 23:14:53,584 INFO L226 Difference]: Without dead ends: 156 [2022-01-09 23:14:53,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2022-01-09 23:14:53,585 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:53,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 145 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-01-09 23:14:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 90. [2022-01-09 23:14:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-01-09 23:14:53,592 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 40 [2022-01-09 23:14:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:53,593 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-01-09 23:14:53,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-01-09 23:14:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-01-09 23:14:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-09 23:14:53,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:53,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:53,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-09 23:14:53,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:53,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-01-09 23:14:53,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833115991] [2022-01-09 23:14:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:53,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:53,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:53,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557148136] [2022-01-09 23:14:53,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:14:53,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:53,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:53,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:53,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:14:53,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:14:53,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:53,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:53,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:14:53,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-09 23:14:54,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:54,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833115991] [2022-01-09 23:14:54,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:54,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557148136] [2022-01-09 23:14:54,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557148136] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:54,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:54,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:54,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487647424] [2022-01-09 23:14:54,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:54,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:54,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:54,010 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:54,135 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2022-01-09 23:14:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 23:14:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-01-09 23:14:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:54,136 INFO L225 Difference]: With dead ends: 198 [2022-01-09 23:14:54,136 INFO L226 Difference]: Without dead ends: 137 [2022-01-09 23:14:54,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:14:54,137 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 86 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:54,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 156 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-09 23:14:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2022-01-09 23:14:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 86 states have internal predecessors, (99), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2022-01-09 23:14:54,145 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 42 [2022-01-09 23:14:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:54,145 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2022-01-09 23:14:54,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:54,146 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2022-01-09 23:14:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-09 23:14:54,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:54,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:54,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:54,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:54,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-01-09 23:14:54,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:54,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913098396] [2022-01-09 23:14:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:54,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:54,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:54,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100381742] [2022-01-09 23:14:54,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:14:54,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:54,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:54,368 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:54,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-09 23:14:54,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-09 23:14:54,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:54,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-09 23:14:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:54,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-01-09 23:14:54,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:14:54,745 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 35 treesize of output 35 [2022-01-09 23:14:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:14:54,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:55,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-01-09 23:14:55,159 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 99 treesize of output 95 [2022-01-09 23:14:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-09 23:14:55,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913098396] [2022-01-09 23:14:55,445 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100381742] [2022-01-09 23:14:55,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100381742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:55,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:55,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2022-01-09 23:14:55,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898075459] [2022-01-09 23:14:55,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:55,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-09 23:14:55,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-09 23:14:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-01-09 23:14:55,446 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-09 23:14:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:56,576 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2022-01-09 23:14:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-09 23:14:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2022-01-09 23:14:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:56,577 INFO L225 Difference]: With dead ends: 127 [2022-01-09 23:14:56,577 INFO L226 Difference]: Without dead ends: 123 [2022-01-09 23:14:56,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2022-01-09 23:14:56,578 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:56,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 153 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 277 Invalid, 0 Unknown, 119 Unchecked, 0.4s Time] [2022-01-09 23:14:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-09 23:14:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 100. [2022-01-09 23:14:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 88 states have internal predecessors, (101), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-01-09 23:14:56,591 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 42 [2022-01-09 23:14:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:56,592 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-01-09 23:14:56,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 24 states have internal predecessors, (56), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-09 23:14:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-01-09 23:14:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-09 23:14:56,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:56,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:56,620 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 23:14:56,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-09 23:14:56,808 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 2 times [2022-01-09 23:14:56,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:56,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101205686] [2022-01-09 23:14:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:56,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:56,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:56,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430281513] [2022-01-09 23:14:56,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:14:56,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:56,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:56,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-09 23:14:56,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:14:56,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:56,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:56,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:14:56,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-09 23:14:57,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:57,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101205686] [2022-01-09 23:14:57,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:57,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430281513] [2022-01-09 23:14:57,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430281513] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:57,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:57,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-09 23:14:57,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740813190] [2022-01-09 23:14:57,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:57,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 23:14:57,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 23:14:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:14:57,053 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:57,190 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2022-01-09 23:14:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:14:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-01-09 23:14:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:57,192 INFO L225 Difference]: With dead ends: 168 [2022-01-09 23:14:57,192 INFO L226 Difference]: Without dead ends: 127 [2022-01-09 23:14:57,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-09 23:14:57,192 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:57,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 146 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-09 23:14:57,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2022-01-09 23:14:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 99 states have internal predecessors, (115), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 23:14:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2022-01-09 23:14:57,202 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 42 [2022-01-09 23:14:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:57,202 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2022-01-09 23:14:57,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2022-01-09 23:14:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-09 23:14:57,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:57,203 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:57,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:57,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-09 23:14:57,419 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2022-01-09 23:14:57,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:57,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369584065] [2022-01-09 23:14:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:57,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:57,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639081026] [2022-01-09 23:14:57,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:14:57,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:57,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:57,427 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:57,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-09 23:14:57,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:14:57,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:57,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:14:57,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-09 23:14:57,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:57,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369584065] [2022-01-09 23:14:57,616 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:57,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639081026] [2022-01-09 23:14:57,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639081026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:57,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:57,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:57,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314936938] [2022-01-09 23:14:57,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:57,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:57,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:57,617 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:57,752 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-01-09 23:14:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:14:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-01-09 23:14:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:57,753 INFO L225 Difference]: With dead ends: 130 [2022-01-09 23:14:57,753 INFO L226 Difference]: Without dead ends: 75 [2022-01-09 23:14:57,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-09 23:14:57,754 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:57,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 110 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-09 23:14:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2022-01-09 23:14:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-01-09 23:14:57,760 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 45 [2022-01-09 23:14:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:57,761 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-01-09 23:14:57,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-01-09 23:14:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-09 23:14:57,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:57,761 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:57,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:57,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-09 23:14:57,974 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:57,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 3 times [2022-01-09 23:14:57,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485314980] [2022-01-09 23:14:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:57,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:57,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:57,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957822077] [2022-01-09 23:14:57,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:14:57,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:57,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:57,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-09 23:14:58,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-09 23:14:58,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:58,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-09 23:14:58,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-09 23:14:58,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-09 23:14:58,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485314980] [2022-01-09 23:14:58,453 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:58,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957822077] [2022-01-09 23:14:58,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957822077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:58,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:58,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2022-01-09 23:14:58,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001575841] [2022-01-09 23:14:58,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:58,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-09 23:14:58,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-09 23:14:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:14:58,454 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-09 23:14:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:58,726 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2022-01-09 23:14:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-09 23:14:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-01-09 23:14:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:58,727 INFO L225 Difference]: With dead ends: 127 [2022-01-09 23:14:58,727 INFO L226 Difference]: Without dead ends: 123 [2022-01-09 23:14:58,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2022-01-09 23:14:58,728 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 147 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:58,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 180 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-01-09 23:14:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 64. [2022-01-09 23:14:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-01-09 23:14:58,734 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 49 [2022-01-09 23:14:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:58,734 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-01-09 23:14:58,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-09 23:14:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-01-09 23:14:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-09 23:14:58,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:58,734 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:58,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-09 23:14:58,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-09 23:14:58,951 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:58,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash 538416053, now seen corresponding path program 5 times [2022-01-09 23:14:58,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:58,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200721758] [2022-01-09 23:14:58,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:58,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:58,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:58,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034935379] [2022-01-09 23:14:58,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:14:58,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:58,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:58,959 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:58,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-09 23:14:59,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-09 23:14:59,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:14:59,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:14:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:14:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-09 23:14:59,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:14:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-09 23:14:59,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:14:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200721758] [2022-01-09 23:14:59,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:14:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034935379] [2022-01-09 23:14:59,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034935379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:14:59,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:14:59,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:14:59,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092057731] [2022-01-09 23:14:59,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:14:59,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:14:59,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:14:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:14:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:14:59,334 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:14:59,476 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2022-01-09 23:14:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-09 23:14:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-01-09 23:14:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:14:59,477 INFO L225 Difference]: With dead ends: 71 [2022-01-09 23:14:59,477 INFO L226 Difference]: Without dead ends: 60 [2022-01-09 23:14:59,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-01-09 23:14:59,478 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 59 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:14:59,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 91 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:14:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-09 23:14:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2022-01-09 23:14:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 23:14:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-01-09 23:14:59,482 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 54 [2022-01-09 23:14:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:14:59,483 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-01-09 23:14:59,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-09 23:14:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-01-09 23:14:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-09 23:14:59,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:14:59,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:14:59,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-09 23:14:59,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-09 23:14:59,684 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:14:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:14:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 6 times [2022-01-09 23:14:59,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:14:59,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401588502] [2022-01-09 23:14:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:14:59,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:14:59,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:14:59,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831880403] [2022-01-09 23:14:59,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-09 23:14:59,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:14:59,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:14:59,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:14:59,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-09 23:15:01,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-09 23:15:01,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:15:01,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 87 conjunts are in the unsatisfiable core [2022-01-09 23:15:01,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:15:01,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-01-09 23:15:01,169 INFO L353 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2022-01-09 23:15:01,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-01-09 23:15:01,348 INFO L353 Elim1Store]: treesize reduction 84, result has 16.8 percent of original size [2022-01-09 23:15:01,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2022-01-09 23:15:01,443 INFO L353 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-01-09 23:15:01,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 49 [2022-01-09 23:15:12,940 INFO L353 Elim1Store]: treesize reduction 222, result has 23.4 percent of original size [2022-01-09 23:15:12,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 96 [2022-01-09 23:15:17,437 INFO L353 Elim1Store]: treesize reduction 429, result has 18.4 percent of original size [2022-01-09 23:15:17,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 169