/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-30 21:59:49,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-30 21:59:49,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-30 21:59:49,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-30 21:59:49,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-30 21:59:49,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-30 21:59:49,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-30 21:59:49,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-30 21:59:49,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-30 21:59:49,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-30 21:59:49,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-30 21:59:49,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-30 21:59:49,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-30 21:59:49,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-30 21:59:49,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-30 21:59:49,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-30 21:59:49,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-30 21:59:49,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-30 21:59:49,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-30 21:59:49,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-30 21:59:49,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-30 21:59:49,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-30 21:59:49,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-30 21:59:49,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-30 21:59:49,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-30 21:59:49,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-30 21:59:49,750 INFO L138 SettingsManager]: * Use SBE=true [2022-01-30 21:59:49,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-30 21:59:49,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-30 21:59:49,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-30 21:59:49,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-30 21:59:49,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 21:59:49,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-30 21:59:49,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-30 21:59:49,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-30 21:59:49,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-30 21:59:49,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-30 21:59:49,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-30 21:59:49,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-30 21:59:49,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-30 21:59:49,956 INFO L275 PluginConnector]: CDTParser initialized [2022-01-30 21:59:49,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2022-01-30 21:59:50,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c224e97b4/0683c63d01b74df382c7a9c7436016fe/FLAG024ab7d60 [2022-01-30 21:59:50,375 INFO L306 CDTParser]: Found 1 translation units. [2022-01-30 21:59:50,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i [2022-01-30 21:59:50,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c224e97b4/0683c63d01b74df382c7a9c7436016fe/FLAG024ab7d60 [2022-01-30 21:59:50,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c224e97b4/0683c63d01b74df382c7a9c7436016fe [2022-01-30 21:59:50,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-30 21:59:50,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-30 21:59:50,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-30 21:59:50,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-30 21:59:50,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-30 21:59:50,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad8fcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50, skipping insertion in model container [2022-01-30 21:59:50,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-30 21:59:50,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-30 21:59:50,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i[1284,1297] [2022-01-30 21:59:50,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 21:59:50,580 INFO L203 MainTranslator]: Completed pre-run [2022-01-30 21:59:50,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i[1284,1297] [2022-01-30 21:59:50,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-30 21:59:50,620 INFO L208 MainTranslator]: Completed translation [2022-01-30 21:59:50,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50 WrapperNode [2022-01-30 21:59:50,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-30 21:59:50,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-30 21:59:50,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-30 21:59:50,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-30 21:59:50,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-30 21:59:50,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-30 21:59:50,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-30 21:59:50,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-30 21:59:50,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (1/1) ... [2022-01-30 21:59:50,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-30 21:59:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:50,679 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) [2022-01-30 21:59:50,696 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 [2022-01-30 21:59:50,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-30 21:59:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-30 21:59:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-30 21:59:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-01-30 21:59:50,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-30 21:59:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-30 21:59:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-30 21:59:50,754 INFO L234 CfgBuilder]: Building ICFG [2022-01-30 21:59:50,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-30 21:59:50,878 INFO L275 CfgBuilder]: Performing block encoding [2022-01-30 21:59:50,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-30 21:59:50,882 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-30 21:59:50,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 09:59:50 BoogieIcfgContainer [2022-01-30 21:59:50,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-30 21:59:50,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-30 21:59:50,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-30 21:59:50,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-30 21:59:50,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 09:59:50" (1/3) ... [2022-01-30 21:59:50,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1a9ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 09:59:50, skipping insertion in model container [2022-01-30 21:59:50,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 09:59:50" (2/3) ... [2022-01-30 21:59:50,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1a9ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 09:59:50, skipping insertion in model container [2022-01-30 21:59:50,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 09:59:50" (3/3) ... [2022-01-30 21:59:50,888 INFO L111 eAbstractionObserver]: Analyzing ICFG max05-1.i [2022-01-30 21:59:50,891 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-30 21:59:50,891 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-30 21:59:50,925 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-30 21:59:50,930 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 [2022-01-30 21:59:50,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-30 21:59:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-30 21:59:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-30 21:59:50,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:50,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:59:50,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1752078259, now seen corresponding path program 1 times [2022-01-30 21:59:50,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:50,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547486702] [2022-01-30 21:59:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:50,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-30 21:59:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-30 21:59:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-30 21:59:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-30 21:59:51,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:51,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547486702] [2022-01-30 21:59:51,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547486702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 21:59:51,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-30 21:59:51,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-30 21:59:51,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652005229] [2022-01-30 21:59:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 21:59:51,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-30 21:59:51,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-30 21:59:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-30 21:59:51,233 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:51,321 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2022-01-30 21:59:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-30 21:59:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-01-30 21:59:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:51,340 INFO L225 Difference]: With dead ends: 60 [2022-01-30 21:59:51,341 INFO L226 Difference]: Without dead ends: 30 [2022-01-30 21:59:51,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-30 21:59:51,345 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:51,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:59:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-30 21:59:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-01-30 21:59:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-30 21:59:51,374 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2022-01-30 21:59:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:51,375 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-30 21:59:51,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-30 21:59:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-30 21:59:51,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:51,378 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-30 21:59:51,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-30 21:59:51,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:51,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash 279578018, now seen corresponding path program 1 times [2022-01-30 21:59:51,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:51,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127996057] [2022-01-30 21:59:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:51,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-30 21:59:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-30 21:59:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-30 21:59:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-30 21:59:51,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127996057] [2022-01-30 21:59:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127996057] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280808458] [2022-01-30 21:59:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:51,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:51,481 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) [2022-01-30 21:59:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-30 21:59:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-30 21:59:51,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-30 21:59:51,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-30 21:59:51,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280808458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 21:59:51,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-30 21:59:51,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-01-30 21:59:51,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564830857] [2022-01-30 21:59:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 21:59:51,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-30 21:59:51,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-30 21:59:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-30 21:59:51,640 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:51,652 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2022-01-30 21:59:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-30 21:59:51,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-01-30 21:59:51,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:51,653 INFO L225 Difference]: With dead ends: 52 [2022-01-30 21:59:51,653 INFO L226 Difference]: Without dead ends: 33 [2022-01-30 21:59:51,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-30 21:59:51,655 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:51,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-30 21:59:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-30 21:59:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-01-30 21:59:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-01-30 21:59:51,659 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2022-01-30 21:59:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:51,659 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-01-30 21:59:51,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-01-30 21:59:51,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-30 21:59:51,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:51,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-30 21:59:51,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-30 21:59:51,867 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 [2022-01-30 21:59:51,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash 412026493, now seen corresponding path program 1 times [2022-01-30 21:59:51,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:51,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698982452] [2022-01-30 21:59:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:51,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-30 21:59:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-30 21:59:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-30 21:59:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-30 21:59:51,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698982452] [2022-01-30 21:59:51,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698982452] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:51,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164980706] [2022-01-30 21:59:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:51,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:51,969 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) [2022-01-30 21:59:51,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-30 21:59:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-30 21:59:52,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-30 21:59:52,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-30 21:59:52,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164980706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-30 21:59:52,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-30 21:59:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-30 21:59:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020299853] [2022-01-30 21:59:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-30 21:59:52,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-30 21:59:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-30 21:59:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-30 21:59:52,144 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:52,152 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2022-01-30 21:59:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-30 21:59:52,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-01-30 21:59:52,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:52,153 INFO L225 Difference]: With dead ends: 47 [2022-01-30 21:59:52,153 INFO L226 Difference]: Without dead ends: 32 [2022-01-30 21:59:52,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-30 21:59:52,154 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:52,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-30 21:59:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-30 21:59:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-01-30 21:59:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-01-30 21:59:52,158 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2022-01-30 21:59:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:52,159 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-01-30 21:59:52,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-30 21:59:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-01-30 21:59:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-30 21:59:52,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:52,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:59:52,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-30 21:59:52,375 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 [2022-01-30 21:59:52,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1974407589, now seen corresponding path program 1 times [2022-01-30 21:59:52,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:52,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167208716] [2022-01-30 21:59:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:52,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-30 21:59:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-30 21:59:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-01-30 21:59:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 21:59:52,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:52,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167208716] [2022-01-30 21:59:52,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167208716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:52,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516509509] [2022-01-30 21:59:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:52,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:52,465 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) [2022-01-30 21:59:52,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-30 21:59:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:52,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-30 21:59:52,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 21:59:52,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:59:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 21:59:52,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516509509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:59:52,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:59:52,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-30 21:59:52,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32590014] [2022-01-30 21:59:52,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:59:52,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-30 21:59:52,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-30 21:59:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-30 21:59:52,734 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-30 21:59:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:52,838 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2022-01-30 21:59:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-30 21:59:52,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-01-30 21:59:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:52,839 INFO L225 Difference]: With dead ends: 59 [2022-01-30 21:59:52,840 INFO L226 Difference]: Without dead ends: 37 [2022-01-30 21:59:52,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-30 21:59:52,844 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:52,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 40 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:59:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-30 21:59:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-30 21:59:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-01-30 21:59:52,857 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 48 [2022-01-30 21:59:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:52,857 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-01-30 21:59:52,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-30 21:59:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-01-30 21:59:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-30 21:59:52,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:52,863 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-01-30 21:59:52,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-30 21:59:53,080 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 [2022-01-30 21:59:53,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1004776865, now seen corresponding path program 2 times [2022-01-30 21:59:53,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:53,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207273842] [2022-01-30 21:59:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:53,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-30 21:59:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-30 21:59:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-01-30 21:59:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-30 21:59:53,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:53,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207273842] [2022-01-30 21:59:53,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207273842] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:53,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384859886] [2022-01-30 21:59:53,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-30 21:59:53,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:53,145 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) [2022-01-30 21:59:53,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-30 21:59:53,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-30 21:59:53,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 21:59:53,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-30 21:59:53,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 21:59:53,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:59:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 21:59:53,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384859886] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:59:53,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:59:53,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 10 [2022-01-30 21:59:53,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751029380] [2022-01-30 21:59:53,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:59:53,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-30 21:59:53,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:53,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-30 21:59:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-01-30 21:59:53,377 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-30 21:59:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:53,510 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-01-30 21:59:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-30 21:59:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-01-30 21:59:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:53,512 INFO L225 Difference]: With dead ends: 68 [2022-01-30 21:59:53,512 INFO L226 Difference]: Without dead ends: 46 [2022-01-30 21:59:53,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-01-30 21:59:53,513 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:53,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 52 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:59:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-30 21:59:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-01-30 21:59:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-01-30 21:59:53,525 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 54 [2022-01-30 21:59:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:53,526 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-01-30 21:59:53,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-30 21:59:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-01-30 21:59:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-30 21:59:53,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:53,533 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 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] [2022-01-30 21:59:53,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-30 21:59:53,748 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 [2022-01-30 21:59:53,748 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash -292509250, now seen corresponding path program 3 times [2022-01-30 21:59:53,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:53,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270633909] [2022-01-30 21:59:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:53,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 21:59:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-30 21:59:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-01-30 21:59:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-30 21:59:53,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:53,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270633909] [2022-01-30 21:59:53,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270633909] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:53,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054542583] [2022-01-30 21:59:53,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-30 21:59:53,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:53,840 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) [2022-01-30 21:59:53,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-30 21:59:53,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-30 21:59:53,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 21:59:53,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-30 21:59:53,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-30 21:59:53,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:59:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-01-30 21:59:54,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054542583] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:59:54,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:59:54,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-30 21:59:54,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872565560] [2022-01-30 21:59:54,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:59:54,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-30 21:59:54,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:54,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-30 21:59:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-30 21:59:54,034 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-30 21:59:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:54,119 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2022-01-30 21:59:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-30 21:59:54,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-01-30 21:59:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:54,120 INFO L225 Difference]: With dead ends: 68 [2022-01-30 21:59:54,120 INFO L226 Difference]: Without dead ends: 49 [2022-01-30 21:59:54,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-30 21:59:54,121 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:54,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:59:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-30 21:59:54,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-30 21:59:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-01-30 21:59:54,125 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 68 [2022-01-30 21:59:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:54,125 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-01-30 21:59:54,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-30 21:59:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-01-30 21:59:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-30 21:59:54,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:54,126 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:59:54,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-30 21:59:54,335 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 [2022-01-30 21:59:54,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 888854872, now seen corresponding path program 4 times [2022-01-30 21:59:54,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:54,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356679419] [2022-01-30 21:59:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:54,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 21:59:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:54,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-30 21:59:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-01-30 21:59:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-30 21:59:54,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:54,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356679419] [2022-01-30 21:59:54,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356679419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:54,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756099471] [2022-01-30 21:59:54,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-30 21:59:54,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:54,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:54,413 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) [2022-01-30 21:59:54,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-30 21:59:54,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-30 21:59:54,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 21:59:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-30 21:59:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-30 21:59:54,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:59:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-30 21:59:54,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756099471] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:59:54,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:59:54,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-01-30 21:59:54,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049286397] [2022-01-30 21:59:54,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:59:54,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-30 21:59:54,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-30 21:59:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-30 21:59:54,637 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-30 21:59:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 21:59:54,759 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2022-01-30 21:59:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-30 21:59:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2022-01-30 21:59:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 21:59:54,760 INFO L225 Difference]: With dead ends: 92 [2022-01-30 21:59:54,760 INFO L226 Difference]: Without dead ends: 61 [2022-01-30 21:59:54,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-30 21:59:54,761 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-30 21:59:54,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 54 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-30 21:59:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-30 21:59:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-01-30 21:59:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-30 21:59:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-01-30 21:59:54,765 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 74 [2022-01-30 21:59:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 21:59:54,765 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-01-30 21:59:54,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-30 21:59:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-01-30 21:59:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-30 21:59:54,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 21:59:54,766 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 21:59:54,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-30 21:59:54,975 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 [2022-01-30 21:59:54,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 21:59:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 21:59:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -249499799, now seen corresponding path program 5 times [2022-01-30 21:59:54,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 21:59:54,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264780298] [2022-01-30 21:59:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 21:59:54,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 21:59:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 21:59:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 21:59:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-30 21:59:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-30 21:59:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 21:59:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 13 proven. 379 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-01-30 21:59:55,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 21:59:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264780298] [2022-01-30 21:59:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264780298] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 21:59:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25277290] [2022-01-30 21:59:55,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-30 21:59:55,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 21:59:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 21:59:55,420 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) [2022-01-30 21:59:55,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-30 21:59:55,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-01-30 21:59:55,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 21:59:55,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-30 21:59:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 21:59:55,833 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 [2022-01-30 21:59:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 21:59:56,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 21:59:56,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 28 [2022-01-30 21:59:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 242 proven. 197 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-30 21:59:57,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 21:59:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 108 proven. 303 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-30 21:59:58,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25277290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 21:59:58,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 21:59:58,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29, 22] total 57 [2022-01-30 21:59:58,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4030769] [2022-01-30 21:59:58,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 21:59:58,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-30 21:59:58,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 21:59:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-30 21:59:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2799, Unknown=1, NotChecked=0, Total=3192 [2022-01-30 21:59:58,738 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 57 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 53 states have internal predecessors, (135), 5 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-30 22:00:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 22:00:40,120 INFO L93 Difference]: Finished difference Result 399 states and 518 transitions. [2022-01-30 22:00:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-01-30 22:00:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 53 states have internal predecessors, (135), 5 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 110 [2022-01-30 22:00:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 22:00:40,124 INFO L225 Difference]: With dead ends: 399 [2022-01-30 22:00:40,124 INFO L226 Difference]: Without dead ends: 272 [2022-01-30 22:00:40,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 236 SyntacticMatches, 7 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28509 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=9179, Invalid=65062, Unknown=15, NotChecked=0, Total=74256 [2022-01-30 22:00:40,139 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 458 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2904 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-30 22:00:40,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 237 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1026 Invalid, 0 Unknown, 2904 Unchecked, 0.7s Time] [2022-01-30 22:00:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-30 22:00:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 177. [2022-01-30 22:00:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 167 states have (on average 1.3053892215568863) internal successors, (218), 167 states have internal predecessors, (218), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-30 22:00:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2022-01-30 22:00:40,155 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 110 [2022-01-30 22:00:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 22:00:40,155 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2022-01-30 22:00:40,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 53 states have internal predecessors, (135), 5 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-01-30 22:00:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2022-01-30 22:00:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-30 22:00:40,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 22:00:40,156 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 22:00:40,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-30 22:00:40,367 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 [2022-01-30 22:00:40,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 22:00:40,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 22:00:40,368 INFO L85 PathProgramCache]: Analyzing trace with hash 311199979, now seen corresponding path program 1 times [2022-01-30 22:00:40,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 22:00:40,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846432621] [2022-01-30 22:00:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 22:00:40,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 22:00:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 22:00:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 22:00:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-30 22:00:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-30 22:00:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 114 proven. 347 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-30 22:00:41,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 22:00:41,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846432621] [2022-01-30 22:00:41,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846432621] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 22:00:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902885633] [2022-01-30 22:00:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 22:00:41,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 22:00:41,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 22:00:41,397 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) [2022-01-30 22:00:41,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-30 22:00:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:00:41,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-30 22:00:41,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 22:00:42,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:42,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:00:42,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 81 [2022-01-30 22:00:42,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,888 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:00:42,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 56 [2022-01-30 22:00:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:42,998 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:00:42,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 56 [2022-01-30 22:00:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:43,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:43,187 INFO L353 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-01-30 22:00:43,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 53 [2022-01-30 22:00:43,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-30 22:00:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-30 22:00:43,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:00:43,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 44 [2022-01-30 22:00:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 232 proven. 242 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-30 22:00:44,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 22:00:48,445 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 106 treesize of output 88 [2022-01-30 22:00:48,451 INFO L353 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-01-30 22:00:48,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 742 treesize of output 1 [2022-01-30 22:00:50,574 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:00:50,574 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 125 treesize of output 115 [2022-01-30 22:00:50,604 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-30 22:00:50,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 363 treesize of output 353 [2022-01-30 22:00:50,708 INFO L353 Elim1Store]: treesize reduction 120, result has 46.9 percent of original size [2022-01-30 22:00:50,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 414 treesize of output 468 [2022-01-30 22:00:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 265 proven. 183 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-30 22:00:51,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902885633] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 22:00:51,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 22:00:51,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 42, 37] total 107 [2022-01-30 22:00:51,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143764712] [2022-01-30 22:00:51,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 22:00:51,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-30 22:00:51,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 22:00:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-30 22:00:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=10827, Unknown=1, NotChecked=0, Total=11342 [2022-01-30 22:00:51,352 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 107 states, 104 states have (on average 1.9326923076923077) internal successors, (201), 102 states have internal predecessors, (201), 6 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-30 22:01:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 22:01:09,360 INFO L93 Difference]: Finished difference Result 793 states and 1159 transitions. [2022-01-30 22:01:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2022-01-30 22:01:09,361 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 104 states have (on average 1.9326923076923077) internal successors, (201), 102 states have internal predecessors, (201), 6 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 110 [2022-01-30 22:01:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 22:01:09,365 INFO L225 Difference]: With dead ends: 793 [2022-01-30 22:01:09,366 INFO L226 Difference]: Without dead ends: 743 [2022-01-30 22:01:09,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 210 SyntacticMatches, 3 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29009 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=4729, Invalid=81412, Unknown=1, NotChecked=0, Total=86142 [2022-01-30 22:01:09,388 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 358 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 7892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5729 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-30 22:01:09,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 359 Invalid, 7892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2067 Invalid, 0 Unknown, 5729 Unchecked, 1.1s Time] [2022-01-30 22:01:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-01-30 22:01:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 653. [2022-01-30 22:01:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 624 states have (on average 1.3381410256410255) internal successors, (835), 637 states have internal predecessors, (835), 11 states have call successors, (11), 5 states have call predecessors, (11), 17 states have return successors, (97), 10 states have call predecessors, (97), 10 states have call successors, (97) [2022-01-30 22:01:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 943 transitions. [2022-01-30 22:01:09,465 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 943 transitions. Word has length 110 [2022-01-30 22:01:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 22:01:09,466 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 943 transitions. [2022-01-30 22:01:09,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 104 states have (on average 1.9326923076923077) internal successors, (201), 102 states have internal predecessors, (201), 6 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-01-30 22:01:09,466 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 943 transitions. [2022-01-30 22:01:09,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-30 22:01:09,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 22:01:09,471 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 22:01:09,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-30 22:01:09,687 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 [2022-01-30 22:01:09,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 22:01:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 22:01:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -81827031, now seen corresponding path program 2 times [2022-01-30 22:01:09,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 22:01:09,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750384154] [2022-01-30 22:01:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 22:01:09,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 22:01:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:01:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 22:01:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:01:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 22:01:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:01:11,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-30 22:01:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:01:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-30 22:01:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:01:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 18 proven. 486 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-30 22:01:12,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 22:01:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750384154] [2022-01-30 22:01:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750384154] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 22:01:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83425093] [2022-01-30 22:01:12,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-30 22:01:12,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 22:01:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 22:01:12,332 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) [2022-01-30 22:01:12,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-30 22:01:12,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-30 22:01:12,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 22:01:12,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 155 conjunts are in the unsatisfiable core [2022-01-30 22:01:12,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 22:01:12,624 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 13 treesize of output 9 [2022-01-30 22:02:03,500 INFO L353 Elim1Store]: treesize reduction 294, result has 10.6 percent of original size [2022-01-30 22:02:03,501 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 102 treesize of output 67 [2022-01-30 22:02:05,075 INFO L353 Elim1Store]: treesize reduction 126, result has 18.2 percent of original size [2022-01-30 22:02:05,075 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 86 treesize of output 61 [2022-01-30 22:02:05,222 INFO L353 Elim1Store]: treesize reduction 126, result has 18.2 percent of original size [2022-01-30 22:02:05,223 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 86 treesize of output 61 [2022-01-30 22:02:05,370 INFO L353 Elim1Store]: treesize reduction 135, result has 12.3 percent of original size [2022-01-30 22:02:05,370 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 86 treesize of output 52 [2022-01-30 22:02:05,587 INFO L353 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-01-30 22:02:05,588 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 2 case distinctions, treesize of input 75 treesize of output 38 [2022-01-30 22:02:05,714 INFO L353 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-01-30 22:02:05,714 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 2 case distinctions, treesize of input 69 treesize of output 38 [2022-01-30 22:03:28,537 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:03:28,537 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 109 treesize of output 65 [2022-01-30 22:03:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 1 proven. 518 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-30 22:03:28,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 22:04:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 18 proven. 466 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-30 22:04:37,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83425093] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-30 22:04:37,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-30 22:04:37,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 61, 48] total 161 [2022-01-30 22:04:37,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009913236] [2022-01-30 22:04:37,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-30 22:04:37,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2022-01-30 22:04:37,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-30 22:04:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2022-01-30 22:04:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=937, Invalid=24730, Unknown=93, NotChecked=0, Total=25760 [2022-01-30 22:04:37,500 INFO L87 Difference]: Start difference. First operand 653 states and 943 transitions. Second operand has 161 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 149 states have internal predecessors, (267), 9 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-30 22:08:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-30 22:08:54,757 INFO L93 Difference]: Finished difference Result 873 states and 1336 transitions. [2022-01-30 22:08:54,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-30 22:08:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 149 states have internal predecessors, (267), 9 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 110 [2022-01-30 22:08:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-30 22:08:54,762 INFO L225 Difference]: With dead ends: 873 [2022-01-30 22:08:54,762 INFO L226 Difference]: Without dead ends: 859 [2022-01-30 22:08:54,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22780 ImplicationChecksByTransitivity, 458.7s TimeCoverageRelationStatistics Valid=2204, Invalid=69660, Unknown=228, NotChecked=0, Total=72092 [2022-01-30 22:08:54,767 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 46 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 4223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1128 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-30 22:08:54,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 566 Invalid, 4223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3034 Invalid, 0 Unknown, 1128 Unchecked, 1.9s Time] [2022-01-30 22:08:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-01-30 22:08:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 837. [2022-01-30 22:08:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 793 states have (on average 1.3165195460277428) internal successors, (1044), 812 states have internal predecessors, (1044), 20 states have call successors, (20), 8 states have call predecessors, (20), 23 states have return successors, (211), 16 states have call predecessors, (211), 19 states have call successors, (211) [2022-01-30 22:08:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1275 transitions. [2022-01-30 22:08:54,825 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1275 transitions. Word has length 110 [2022-01-30 22:08:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-30 22:08:54,825 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 1275 transitions. [2022-01-30 22:08:54,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 157 states have (on average 1.7006369426751593) internal successors, (267), 149 states have internal predecessors, (267), 9 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-01-30 22:08:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1275 transitions. [2022-01-30 22:08:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-30 22:08:54,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-30 22:08:54,832 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-30 22:08:54,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-30 22:08:55,048 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 [2022-01-30 22:08:55,048 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-30 22:08:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-30 22:08:55,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1092944281, now seen corresponding path program 3 times [2022-01-30 22:08:55,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-30 22:08:55,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286918759] [2022-01-30 22:08:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-30 22:08:55,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-30 22:08:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:08:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-30 22:08:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:08:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-30 22:08:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:08:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-30 22:08:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:08:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-01-30 22:08:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-30 22:08:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 233 proven. 230 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-30 22:08:55,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-30 22:08:55,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286918759] [2022-01-30 22:08:55,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286918759] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-30 22:08:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99313203] [2022-01-30 22:08:55,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-30 22:08:55,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-30 22:08:55,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-30 22:08:55,882 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) [2022-01-30 22:08:55,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-30 22:08:56,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-30 22:08:56,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-30 22:08:56,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 73 conjunts are in the unsatisfiable core [2022-01-30 22:08:56,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-30 22:08:56,511 INFO L353 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-01-30 22:08:56,511 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 33 treesize of output 35 [2022-01-30 22:08:56,557 INFO L353 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-01-30 22:08:56,557 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 33 treesize of output 35 [2022-01-30 22:08:56,588 INFO L353 Elim1Store]: treesize reduction 129, result has 25.0 percent of original size [2022-01-30 22:08:56,588 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 45 treesize of output 62 [2022-01-30 22:08:56,747 INFO L353 Elim1Store]: treesize reduction 274, result has 17.7 percent of original size [2022-01-30 22:08:56,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 80 treesize of output 96 [2022-01-30 22:08:58,159 INFO L353 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2022-01-30 22:08:58,159 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 5 case distinctions, treesize of input 46 treesize of output 36 [2022-01-30 22:10:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 285 proven. 165 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-30 22:10:05,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-30 22:10:10,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~i~2 Int)) (or (forall ((v_ArrVal_422 Int) (v_ArrVal_425 Int)) (let ((.cse3 (select |c_#memory_int| |c_main_~#x~0.base|)) (.cse4 (* main_~i~2 4))) (let ((.cse2 (+ .cse4 |c_main_~#x~0.offset| 4)) (.cse1 (store .cse3 (+ .cse4 |c_main_~#x~0.offset|) v_ArrVal_422))) (or (let ((.cse0 (store .cse1 .cse2 v_ArrVal_425))) (<= (+ (select .cse0 (+ |c_main_~#x~0.offset| 8)) 1) (select .cse0 (+ |c_main_~#x~0.offset| 12)))) (not (<= v_ArrVal_422 (select .cse3 .cse2))) (not (<= (select .cse1 (+ .cse4 |c_main_~#x~0.offset| 8)) v_ArrVal_425)))))) (< main_~i~2 2) (not (< main_~i~2 3)))) is different from false [2022-01-30 22:10:11,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_422 Int) (v_ArrVal_420 Int) (v_main_~i~2_45 Int) (v_ArrVal_425 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_main_~#x~0.base|) (+ |c_main_~#x~0.offset| (* c_main_~i~2 4)) v_ArrVal_420)) (.cse1 (* v_main_~i~2_45 4))) (let ((.cse0 (store .cse2 (+ .cse1 |c_main_~#x~0.offset|) v_ArrVal_422)) (.cse3 (+ .cse1 |c_main_~#x~0.offset| 4))) (or (< v_main_~i~2_45 2) (not (<= (select .cse0 (+ .cse1 |c_main_~#x~0.offset| 8)) v_ArrVal_425)) (not (<= v_ArrVal_422 (select .cse2 .cse3))) (let ((.cse4 (store .cse0 .cse3 v_ArrVal_425))) (<= (+ (select .cse4 (+ |c_main_~#x~0.offset| 8)) 1) (select .cse4 (+ |c_main_~#x~0.offset| 12)))) (not (< v_main_~i~2_45 3)))))) is different from false [2022-01-30 22:10:13,576 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~2_46 Int)) (or (not (<= v_main_~i~2_46 (+ c_main_~i~2 1))) (forall ((v_ArrVal_422 Int) (v_ArrVal_420 Int) (v_main_~i~2_45 Int) (v_ArrVal_425 Int)) (let ((.cse4 (store (select |c_#memory_int| |c_main_~#x~0.base|) (+ |c_main_~#x~0.offset| (* v_main_~i~2_46 4)) v_ArrVal_420)) (.cse1 (* v_main_~i~2_45 4))) (let ((.cse0 (store .cse4 (+ .cse1 |c_main_~#x~0.offset|) v_ArrVal_422)) (.cse3 (+ .cse1 |c_main_~#x~0.offset| 4))) (or (< v_main_~i~2_45 2) (not (<= (select .cse0 (+ .cse1 |c_main_~#x~0.offset| 8)) v_ArrVal_425)) (let ((.cse2 (store .cse0 .cse3 v_ArrVal_425))) (<= (+ (select .cse2 (+ |c_main_~#x~0.offset| 8)) 1) (select .cse2 (+ |c_main_~#x~0.offset| 12)))) (not (<= v_ArrVal_422 (select .cse4 .cse3))) (not (< v_main_~i~2_45 3)))))))) is different from false [2022-01-30 22:10:15,308 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_422 Int) (v_ArrVal_420 Int) (v_ArrVal_419 Int) (v_main_~i~2_46 Int) (v_main_~i~2_45 Int) (v_ArrVal_425 Int)) (let ((.cse2 (store (store (select |c_#memory_int| |c_main_~#x~0.base|) (+ |c_main_~#x~0.offset| (* c_main_~i~2 4)) v_ArrVal_419) (+ |c_main_~#x~0.offset| (* v_main_~i~2_46 4)) v_ArrVal_420)) (.cse1 (* v_main_~i~2_45 4))) (let ((.cse0 (store .cse2 (+ .cse1 |c_main_~#x~0.offset|) v_ArrVal_422)) (.cse3 (+ .cse1 |c_main_~#x~0.offset| 4))) (or (not (<= v_main_~i~2_46 (+ c_main_~i~2 1))) (< v_main_~i~2_45 2) (not (<= (select .cse0 (+ .cse1 |c_main_~#x~0.offset| 8)) v_ArrVal_425)) (not (<= v_ArrVal_422 (select .cse2 .cse3))) (let ((.cse4 (store .cse0 .cse3 v_ArrVal_425))) (<= (+ (select .cse4 (+ |c_main_~#x~0.offset| 8)) 1) (select .cse4 (+ |c_main_~#x~0.offset| 12)))) (not (< v_main_~i~2_45 3)))))) is different from false [2022-01-30 22:10:17,569 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~i~2_47 Int)) (or (forall ((v_ArrVal_422 Int) (v_ArrVal_420 Int) (v_ArrVal_419 Int) (v_main_~i~2_46 Int) (v_main_~i~2_45 Int) (v_ArrVal_425 Int)) (let ((.cse4 (store (store (select |c_#memory_int| |c_main_~#x~0.base|) (+ (* v_main_~i~2_47 4) |c_main_~#x~0.offset|) v_ArrVal_419) (+ |c_main_~#x~0.offset| (* v_main_~i~2_46 4)) v_ArrVal_420)) (.cse1 (* v_main_~i~2_45 4))) (let ((.cse0 (store .cse4 (+ .cse1 |c_main_~#x~0.offset|) v_ArrVal_422)) (.cse3 (+ .cse1 |c_main_~#x~0.offset| 4))) (or (not (<= v_main_~i~2_46 (+ v_main_~i~2_47 1))) (not (<= (select .cse0 (+ .cse1 |c_main_~#x~0.offset| 8)) v_ArrVal_425)) (< v_main_~i~2_45 2) (let ((.cse2 (store .cse0 .cse3 v_ArrVal_425))) (<= (+ (select .cse2 (+ |c_main_~#x~0.offset| 8)) 1) (select .cse2 (+ |c_main_~#x~0.offset| 12)))) (not (<= v_ArrVal_422 (select .cse4 .cse3))) (not (< v_main_~i~2_45 3)))))) (not (<= v_main_~i~2_47 0)))) is different from false [2022-01-30 22:10:17,688 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 158 treesize of output 146 [2022-01-30 22:10:17,712 INFO L353 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2022-01-30 22:10:17,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 154392 treesize of output 1 [2022-01-30 22:10:19,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_422 Int) (v_ArrVal_420 Int) (v_main_~i~2_47 Int) (v_ArrVal_419 Int) (v_main_~i~2_46 Int) (v_main_~i~2_45 Int) (v_ArrVal_425 Int)) (let ((.cse4 (store (store (select |c_#memory_int| |c_max_#in~x.base|) (+ (* v_main_~i~2_47 4) |c_max_#in~x.offset|) v_ArrVal_419) (+ |c_max_#in~x.offset| (* v_main_~i~2_46 4)) v_ArrVal_420)) (.cse3 (* v_main_~i~2_45 4))) (let ((.cse1 (store .cse4 (+ .cse3 |c_max_#in~x.offset|) v_ArrVal_422)) (.cse2 (+ .cse3 |c_max_#in~x.offset| 4))) (or (let ((.cse0 (store .cse1 .cse2 v_ArrVal_425))) (<= (+ (select .cse0 (+ |c_max_#in~x.offset| 8)) 1) (select .cse0 (+ |c_max_#in~x.offset| 12)))) (not (<= v_main_~i~2_46 (+ v_main_~i~2_47 1))) (< v_main_~i~2_45 2) (not (<= v_main_~i~2_47 0)) (not (<= (select .cse1 (+ .cse3 |c_max_#in~x.offset| 8)) v_ArrVal_425)) (not (<= v_ArrVal_422 (select .cse4 .cse2))) (not (< v_main_~i~2_45 3)))))) is different from false [2022-01-30 22:10:50,284 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-30 22:10:50,284 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 157 treesize of output 153 [2022-01-30 22:10:50,299 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-30 22:10:50,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 3 [2022-01-30 22:10:50,443 INFO L353 Elim1Store]: treesize reduction 141, result has 40.3 percent of original size [2022-01-30 22:10:50,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 2817262 treesize of output 2751793 [2022-01-30 22:12:33,961 WARN L228 SmtUtils]: Spent 1.73m on a formula simplification. DAG size of input: 1287 DAG size of output: 1287 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-30 22:12:59,564 WARN L228 SmtUtils]: Spent 15.68s on a formula simplification. DAG size of input: 1207 DAG size of output: 1207 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-30 22:13:17,960 WARN L228 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 949 DAG size of output: 949 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-30 22:13:46,312 WARN L228 SmtUtils]: Spent 22.97s on a formula simplification. DAG size of input: 947 DAG size of output: 947 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-30 22:14:00,914 WARN L228 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 945 DAG size of output: 945 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)