/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/mbpr5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:05:11,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:05:11,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:05:11,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:05:11,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 23:05:11,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 23:05:11,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 23:05:11,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 23:05:11,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 23:05:11,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 23:05:11,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 23:05:11,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 23:05:11,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 23:05:11,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 23:05:11,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 23:05:11,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 23:05:11,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 23:05:11,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:05:11,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:05:11,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:05:11,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 23:05:11,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:05:11,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:05:11,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:05:11,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:05:11,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:05:11,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:05:11,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:05:11,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:05:11,540 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:05:11,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:05:11,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:05:11,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:05:11,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:05:11,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:05:11,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:05:11,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:05:11,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:05:11,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:05:11,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:05:11,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:05:11,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:05:11,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:05:11,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:05:11,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:05:11,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:05:11,751 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:05:11,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr5.c [2022-01-09 23:05:11,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf67cd317/d8b4c277c28a4c81aa6d0cfcd663729b/FLAG5b1058ed3 [2022-01-09 23:05:12,179 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:05:12,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr5.c [2022-01-09 23:05:12,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf67cd317/d8b4c277c28a4c81aa6d0cfcd663729b/FLAG5b1058ed3 [2022-01-09 23:05:12,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf67cd317/d8b4c277c28a4c81aa6d0cfcd663729b [2022-01-09 23:05:12,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:05:12,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:05:12,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:05:12,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:05:12,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:05:12,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281f14ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12, skipping insertion in model container [2022-01-09 23:05:12,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:05:12,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:05:12,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr5.c[396,409] [2022-01-09 23:05:12,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:05:12,825 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:05:12,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr5.c[396,409] [2022-01-09 23:05:12,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:05:12,861 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:05:12,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12 WrapperNode [2022-01-09 23:05:12,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:05:12,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:05:12,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:05:12,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:05:12,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,908 INFO L137 Inliner]: procedures = 15, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 173 [2022-01-09 23:05:12,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:05:12,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:05:12,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:05:12,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:05:12,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:05:12,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:05:12,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:05:12,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:05:12,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (1/1) ... [2022-01-09 23:05:12,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:05:12,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:05:12,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 23:05:12,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 23:05:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:05:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:05:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 23:05:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:05:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:05:12,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:05:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:05:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 23:05:13,042 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:05:13,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:05:13,223 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:05:13,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:05:13,227 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-09 23:05:13,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:05:13 BoogieIcfgContainer [2022-01-09 23:05:13,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:05:13,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:05:13,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:05:13,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:05:13,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:05:12" (1/3) ... [2022-01-09 23:05:13,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9af1a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:05:13, skipping insertion in model container [2022-01-09 23:05:13,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:05:12" (2/3) ... [2022-01-09 23:05:13,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9af1a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:05:13, skipping insertion in model container [2022-01-09 23:05:13,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:05:13" (3/3) ... [2022-01-09 23:05:13,246 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2022-01-09 23:05:13,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:05:13,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:05:13,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:05:13,298 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 23:05:13,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:05:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-09 23:05:13,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:13,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:13,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1087925893, now seen corresponding path program 1 times [2022-01-09 23:05:13,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:13,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926163139] [2022-01-09 23:05:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:13,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:13,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:13,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926163139] [2022-01-09 23:05:13,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926163139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:05:13,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:05:13,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:05:13,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062008376] [2022-01-09 23:05:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:05:13,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:05:13,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:05:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:05:13,517 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:13,537 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2022-01-09 23:05:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:05:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-09 23:05:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:13,545 INFO L225 Difference]: With dead ends: 83 [2022-01-09 23:05:13,546 INFO L226 Difference]: Without dead ends: 39 [2022-01-09 23:05:13,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:05:13,550 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:13,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:05:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-09 23:05:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-01-09 23:05:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-01-09 23:05:13,574 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 21 [2022-01-09 23:05:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:13,575 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-01-09 23:05:13,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-01-09 23:05:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-09 23:05:13,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:13,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:13,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:05:13,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -30028973, now seen corresponding path program 1 times [2022-01-09 23:05:13,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:13,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855985526] [2022-01-09 23:05:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:13,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855985526] [2022-01-09 23:05:13,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855985526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:05:13,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:05:13,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:05:13,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140147394] [2022-01-09 23:05:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:05:13,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:05:13,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:13,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:05:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:05:13,648 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:13,672 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-01-09 23:05:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:05:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-09 23:05:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:13,673 INFO L225 Difference]: With dead ends: 48 [2022-01-09 23:05:13,674 INFO L226 Difference]: Without dead ends: 46 [2022-01-09 23:05:13,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:05:13,675 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:13,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:05:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-09 23:05:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-01-09 23:05:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2022-01-09 23:05:13,686 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2022-01-09 23:05:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:13,687 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2022-01-09 23:05:13,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2022-01-09 23:05:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-09 23:05:13,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:13,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:13,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:05:13,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash -29969391, now seen corresponding path program 1 times [2022-01-09 23:05:13,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:13,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122585953] [2022-01-09 23:05:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:13,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:13,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:13,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122585953] [2022-01-09 23:05:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122585953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:05:13,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:05:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 23:05:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680440459] [2022-01-09 23:05:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:05:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 23:05:13,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 23:05:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:05:13,815 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:13,900 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2022-01-09 23:05:13,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 23:05:13,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-09 23:05:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:13,901 INFO L225 Difference]: With dead ends: 92 [2022-01-09 23:05:13,901 INFO L226 Difference]: Without dead ends: 61 [2022-01-09 23:05:13,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:05:13,902 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:13,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:05:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-09 23:05:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2022-01-09 23:05:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-01-09 23:05:13,907 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2022-01-09 23:05:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:13,907 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-01-09 23:05:13,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-01-09 23:05:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-09 23:05:13,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:13,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:13,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:05:13,908 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash -175217928, now seen corresponding path program 1 times [2022-01-09 23:05:13,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:13,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113120235] [2022-01-09 23:05:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:13,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:05:14,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:14,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113120235] [2022-01-09 23:05:14,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113120235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:05:14,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:05:14,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:05:14,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265323513] [2022-01-09 23:05:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:05:14,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:05:14,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:05:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:05:14,035 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:14,048 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-01-09 23:05:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:05:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-09 23:05:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:14,049 INFO L225 Difference]: With dead ends: 61 [2022-01-09 23:05:14,049 INFO L226 Difference]: Without dead ends: 46 [2022-01-09 23:05:14,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:05:14,050 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:14,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:05:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-09 23:05:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-01-09 23:05:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-01-09 23:05:14,055 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 41 [2022-01-09 23:05:14,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:14,056 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-01-09 23:05:14,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-01-09 23:05:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-09 23:05:14,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:14,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:14,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:05:14,057 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:14,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:14,057 INFO L85 PathProgramCache]: Analyzing trace with hash -568244938, now seen corresponding path program 1 times [2022-01-09 23:05:14,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:14,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731807688] [2022-01-09 23:05:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:14,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:14,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731807688] [2022-01-09 23:05:14,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731807688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:05:14,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46465759] [2022-01-09 23:05:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:14,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:14,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:05:14,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:05:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:05:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:14,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 103 conjunts are in the unsatisfiable core [2022-01-09 23:05:14,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:05:14,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-01-09 23:05:14,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-01-09 23:05:14,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:14,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2022-01-09 23:05:14,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2022-01-09 23:05:14,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:14,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2022-01-09 23:05:14,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:14,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2022-01-09 23:05:15,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:15,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2022-01-09 23:05:15,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2022-01-09 23:05:15,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:15,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2022-01-09 23:05:15,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:15,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2022-01-09 23:05:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:15,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:05:15,591 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 31 treesize of output 27 [2022-01-09 23:05:15,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2022-01-09 23:05:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:05:15,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46465759] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:05:15,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:05:15,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 23 [2022-01-09 23:05:15,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055527249] [2022-01-09 23:05:15,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:05:15,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-09 23:05:15,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:15,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-09 23:05:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-01-09 23:05:15,715 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:16,276 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2022-01-09 23:05:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 23:05:16,277 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-09 23:05:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:16,278 INFO L225 Difference]: With dead ends: 126 [2022-01-09 23:05:16,278 INFO L226 Difference]: Without dead ends: 87 [2022-01-09 23:05:16,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-01-09 23:05:16,279 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 285 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:16,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 110 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 23:05:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-09 23:05:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 48. [2022-01-09 23:05:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-01-09 23:05:16,284 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 41 [2022-01-09 23:05:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:16,284 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-01-09 23:05:16,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-01-09 23:05:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-09 23:05:16,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:16,285 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:16,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 23:05:16,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:16,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1692770569, now seen corresponding path program 1 times [2022-01-09 23:05:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488014755] [2022-01-09 23:05:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:05:16,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488014755] [2022-01-09 23:05:16,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488014755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:05:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126730732] [2022-01-09 23:05:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:16,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:05:16,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:05:16,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:05:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:16,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-09 23:05:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:05:16,986 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 16 treesize of output 12 [2022-01-09 23:05:17,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-01-09 23:05:17,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:17,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2022-01-09 23:05:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2022-01-09 23:05:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:17,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2022-01-09 23:05:17,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2022-01-09 23:05:17,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:17,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2022-01-09 23:05:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:17,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-01-09 23:05:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 23:05:17,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:05:17,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-01-09 23:05:17,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-01-09 23:05:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:05:17,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126730732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:05:17,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:05:17,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2022-01-09 23:05:17,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823369888] [2022-01-09 23:05:17,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:05:17,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-09 23:05:17,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-09 23:05:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-01-09 23:05:17,984 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:18,680 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2022-01-09 23:05:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 23:05:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-01-09 23:05:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:18,681 INFO L225 Difference]: With dead ends: 119 [2022-01-09 23:05:18,681 INFO L226 Difference]: Without dead ends: 84 [2022-01-09 23:05:18,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-01-09 23:05:18,683 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:18,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 120 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 23:05:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-09 23:05:18,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2022-01-09 23:05:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-01-09 23:05:18,691 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 47 [2022-01-09 23:05:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:18,691 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-01-09 23:05:18,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-01-09 23:05:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-09 23:05:18,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:18,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:18,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-09 23:05:18,897 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,SelfDestructingSolverStorable5 [2022-01-09 23:05:18,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash 964465308, now seen corresponding path program 2 times [2022-01-09 23:05:18,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:18,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257763262] [2022-01-09 23:05:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:18,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:05:19,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:19,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257763262] [2022-01-09 23:05:19,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257763262] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:05:19,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37542573] [2022-01-09 23:05:19,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:05:19,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:19,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:05:19,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:05:19,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:05:19,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:05:19,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:05:19,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-09 23:05:19,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:05:19,380 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 16 treesize of output 12 [2022-01-09 23:05:19,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-01-09 23:05:19,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,471 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:19,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2022-01-09 23:05:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-01-09 23:05:19,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:19,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2022-01-09 23:05:19,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:05:19,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-01-09 23:05:19,690 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 15 treesize of output 7 [2022-01-09 23:05:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:05:19,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:05:19,929 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 17 treesize of output 15 [2022-01-09 23:05:19,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-01-09 23:05:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 23:05:19,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37542573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:05:19,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:05:19,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-01-09 23:05:19,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242538474] [2022-01-09 23:05:19,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:05:19,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-09 23:05:19,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:05:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-09 23:05:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-01-09 23:05:19,996 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:20,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:05:20,494 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2022-01-09 23:05:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-09 23:05:20,495 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-09 23:05:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:05:20,496 INFO L225 Difference]: With dead ends: 156 [2022-01-09 23:05:20,497 INFO L226 Difference]: Without dead ends: 121 [2022-01-09 23:05:20,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2022-01-09 23:05:20,498 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 248 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 23:05:20,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 139 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 23:05:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-01-09 23:05:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 60. [2022-01-09 23:05:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-01-09 23:05:20,503 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 53 [2022-01-09 23:05:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:05:20,503 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-01-09 23:05:20,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:05:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-01-09 23:05:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-09 23:05:20,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:05:20,504 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:05:20,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 23:05:20,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:20,715 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:05:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:05:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -477181457, now seen corresponding path program 3 times [2022-01-09 23:05:20,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:05:20,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089026186] [2022-01-09 23:05:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:05:20,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:05:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:05:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 23:05:20,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:05:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089026186] [2022-01-09 23:05:20,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089026186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:05:20,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588768596] [2022-01-09 23:05:20,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:05:20,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:20,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:05:20,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:05:20,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:05:21,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-09 23:05:21,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:05:21,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-09 23:05:21,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:05:21,380 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 16 treesize of output 12 [2022-01-09 23:05:21,430 INFO L353 Elim1Store]: treesize reduction 296, result has 10.6 percent of original size [2022-01-09 23:05:21,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2022-01-09 23:05:21,474 INFO L353 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-01-09 23:05:21,474 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-01-09 23:05:21,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 71 [2022-01-09 23:05:21,540 INFO L353 Elim1Store]: treesize reduction 362, result has 8.8 percent of original size [2022-01-09 23:05:21,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 446 treesize of output 420 [2022-01-09 23:05:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 23:05:21,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:05:22,314 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 219 treesize of output 195 [2022-01-09 23:05:22,347 INFO L353 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-01-09 23:05:22,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118065 treesize of output 112625 [2022-01-09 23:05:22,705 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-09 23:05:22,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-09 23:05:22,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:05:22,920 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-09 23:05:22,923 INFO L158 Benchmark]: Toolchain (without parser) took 10320.42ms. Allocated memory was 188.7MB in the beginning and 338.7MB in the end (delta: 149.9MB). Free memory was 135.7MB in the beginning and 195.5MB in the end (delta: -59.8MB). Peak memory consumption was 169.9MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.34ms. Allocated memory is still 188.7MB. Free memory was 135.5MB in the beginning and 161.2MB in the end (delta: -25.7MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.78ms. Allocated memory is still 188.7MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 188.7MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: RCFGBuilder took 310.84ms. Allocated memory is still 188.7MB. Free memory was 157.0MB in the beginning and 141.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,924 INFO L158 Benchmark]: TraceAbstraction took 9681.22ms. Allocated memory was 188.7MB in the beginning and 338.7MB in the end (delta: 149.9MB). Free memory was 140.8MB in the beginning and 195.5MB in the end (delta: -54.8MB). Peak memory consumption was 173.4MB. Max. memory is 8.0GB. [2022-01-09 23:05:22,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.34ms. Allocated memory is still 188.7MB. Free memory was 135.5MB in the beginning and 161.2MB in the end (delta: -25.7MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.78ms. Allocated memory is still 188.7MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 188.7MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.84ms. Allocated memory is still 188.7MB. Free memory was 157.0MB in the beginning and 141.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 9681.22ms. Allocated memory was 188.7MB in the beginning and 338.7MB in the end (delta: 149.9MB). Free memory was 140.8MB in the beginning and 195.5MB in the end (delta: -54.8MB). Peak memory consumption was 173.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-09 23:05:22,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...