/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-fpi/indp4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:21:20,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:21:20,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:21:20,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 23:21:20,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 23:21:20,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 23:21:20,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 23:21:20,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 23:21:20,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 23:21:20,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 23:21:20,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 23:21:20,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 23:21:20,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 23:21:20,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 23:21:20,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 23:21:20,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 23:21:20,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 23:21:20,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 23:21:20,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 23:21:20,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 23:21:20,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 23:21:20,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 23:21:20,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 23:21:20,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 23:21:20,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 23:21:20,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:21:20,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:21:20,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:21:20,425 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 23:21:20,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:21:20,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:21:20,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:21:20,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:21:20,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:21:20,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:21:20,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:21:20,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:21:20,450 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:21:20,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:21:20,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:21:20,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:21:20,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:21:20,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:21:20,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:21:20,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:21:20,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:21:20,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:21:20,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:21:20,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:21:20,646 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:21:20,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4.c [2022-01-09 23:21:20,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ceb01d4/73269fc0d65644a2a42c27efbc294ec5/FLAGb8d900182 [2022-01-09 23:21:21,046 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:21:21,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4.c [2022-01-09 23:21:21,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ceb01d4/73269fc0d65644a2a42c27efbc294ec5/FLAGb8d900182 [2022-01-09 23:21:21,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ceb01d4/73269fc0d65644a2a42c27efbc294ec5 [2022-01-09 23:21:21,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:21:21,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:21:21,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:21:21,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:21:21,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:21:21,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8ae219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21, skipping insertion in model container [2022-01-09 23:21:21,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:21:21,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:21:21,624 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-fpi/indp4.c[588,601] [2022-01-09 23:21:21,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:21:21,647 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:21:21,655 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-fpi/indp4.c[588,601] [2022-01-09 23:21:21,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:21:21,669 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:21:21,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21 WrapperNode [2022-01-09 23:21:21,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:21:21,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:21:21,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:21:21,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:21:21,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,699 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-01-09 23:21:21,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:21:21,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:21:21,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:21:21,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:21:21,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:21:21,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:21:21,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:21:21,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:21:21,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (1/1) ... [2022-01-09 23:21:21,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:21:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:21,759 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 23:21:21,787 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 23:21:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:21:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:21:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 23:21:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-09 23:21:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:21:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:21:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 23:21:21,837 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:21:21,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:21:21,927 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:21:21,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:21:21,931 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-09 23:21:21,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:21:21 BoogieIcfgContainer [2022-01-09 23:21:21,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:21:21,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:21:21,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:21:21,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:21:21,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:21:21" (1/3) ... [2022-01-09 23:21:21,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367790a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:21:21, skipping insertion in model container [2022-01-09 23:21:21,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:21:21" (2/3) ... [2022-01-09 23:21:21,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367790a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:21:21, skipping insertion in model container [2022-01-09 23:21:21,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:21:21" (3/3) ... [2022-01-09 23:21:21,937 INFO L111 eAbstractionObserver]: Analyzing ICFG indp4.c [2022-01-09 23:21:21,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:21:21,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:21:21,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:21:21,973 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 23:21:21,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:21:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 23:21:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-09 23:21:21,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:21,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:21,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-01-09 23:21:21,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:21,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692662477] [2022-01-09 23:21:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:21,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:21:22,079 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 23:21:22,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:22,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692662477] [2022-01-09 23:21:22,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692662477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:21:22,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:21:22,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:21:22,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567084586] [2022-01-09 23:21:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:21:22,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 23:21:22,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 23:21:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 23:21:22,102 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 23:21:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:22,111 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-01-09 23:21:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 23:21:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-01-09 23:21:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:22,117 INFO L225 Difference]: With dead ends: 44 [2022-01-09 23:21:22,117 INFO L226 Difference]: Without dead ends: 20 [2022-01-09 23:21:22,119 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 23:21:22,121 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:22,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:21:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-09 23:21:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-09 23:21:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 23:21:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-09 23:21:22,141 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-01-09 23:21:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-09 23:21:22,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 23:21:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-09 23:21:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-09 23:21:22,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:22,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:22,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:21:22,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:22,143 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-01-09 23:21:22,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:22,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496758125] [2022-01-09 23:21:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:22,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:21:22,223 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 23:21:22,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496758125] [2022-01-09 23:21:22,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496758125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:21:22,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:21:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 23:21:22,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522523053] [2022-01-09 23:21:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:21:22,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:21:22,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:21:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:21:22,229 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 23:21:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:22,289 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2022-01-09 23:21:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:21:22,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2022-01-09 23:21:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:22,292 INFO L225 Difference]: With dead ends: 45 [2022-01-09 23:21:22,292 INFO L226 Difference]: Without dead ends: 32 [2022-01-09 23:21:22,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:21:22,297 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:22,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:21:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-09 23:21:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-09 23:21:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 23:21:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-09 23:21:22,308 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-09 23:21:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:22,309 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-09 23:21:22,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 23:21:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-09 23:21:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-09 23:21:22,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:22,311 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] [2022-01-09 23:21:22,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:21:22,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2022-01-09 23:21:22,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:22,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441568639] [2022-01-09 23:21:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:22,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:22,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:22,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521510458] [2022-01-09 23:21:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:22,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:22,348 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 23:21:22,349 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 23:21:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:21:22,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-09 23:21:22,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:22,492 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 11 treesize of output 7 [2022-01-09 23:21:22,540 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 23 treesize of output 11 [2022-01-09 23:21:22,570 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 23 treesize of output 11 [2022-01-09 23:21:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:21:22,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:22,677 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 20 treesize of output 18 [2022-01-09 23:21:22,679 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 32 treesize of output 30 [2022-01-09 23:21:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:21:22,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441568639] [2022-01-09 23:21:22,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521510458] [2022-01-09 23:21:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521510458] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:22,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:22,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-09 23:21:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121504778] [2022-01-09 23:21:22,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:22,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:21:22,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:21:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:21:22,696 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 23:21:22,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:22,755 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-01-09 23:21:22,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 23:21:22,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 20 [2022-01-09 23:21:22,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:22,756 INFO L225 Difference]: With dead ends: 33 [2022-01-09 23:21:22,756 INFO L226 Difference]: Without dead ends: 31 [2022-01-09 23:21:22,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-01-09 23:21:22,757 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:22,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 52 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 23:21:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-09 23:21:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-01-09 23:21:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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 23:21:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-09 23:21:22,760 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-01-09 23:21:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:22,760 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-09 23:21:22,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 23:21:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-09 23:21:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-09 23:21:22,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:22,761 INFO L514 BasicCegarLoop]: trace histogram [2, 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 23:21:22,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 23:21:22,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:22,978 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2022-01-09 23:21:22,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:22,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067710697] [2022-01-09 23:21:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:22,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:22,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:22,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251547382] [2022-01-09 23:21:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:22,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:22,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:22,990 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 23:21:22,991 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 23:21:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:21:23,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 23:21:23,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:21:23,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 23:21:23,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067710697] [2022-01-09 23:21:23,139 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251547382] [2022-01-09 23:21:23,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251547382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:23,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:23,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-09 23:21:23,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682030941] [2022-01-09 23:21:23,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:23,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 23:21:23,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 23:21:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-09 23:21:23,140 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 23:21:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:23,222 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-01-09 23:21:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 23:21:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 24 [2022-01-09 23:21:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:23,223 INFO L225 Difference]: With dead ends: 73 [2022-01-09 23:21:23,223 INFO L226 Difference]: Without dead ends: 42 [2022-01-09 23:21:23,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:21:23,224 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:23,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 46 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:21:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-09 23:21:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-01-09 23:21:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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 23:21:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-01-09 23:21:23,227 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 24 [2022-01-09 23:21:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:23,228 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-01-09 23:21:23,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 23:21:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-01-09 23:21:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-09 23:21:23,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:23,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:23,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:21:23,442 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,SelfDestructingSolverStorable3 [2022-01-09 23:21:23,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 2 times [2022-01-09 23:21:23,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:23,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349950062] [2022-01-09 23:21:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:23,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:23,455 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:23,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147876039] [2022-01-09 23:21:23,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 23:21:23,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:23,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:23,460 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 23:21:23,518 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 23:21:23,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 23:21:23,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:21:23,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-09 23:21:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:23,557 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 21 treesize of output 17 [2022-01-09 23:21:23,614 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:23,614 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 25 treesize of output 24 [2022-01-09 23:21:23,641 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 31 treesize of output 15 [2022-01-09 23:21:23,687 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:23,687 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 25 treesize of output 24 [2022-01-09 23:21:23,712 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 31 treesize of output 15 [2022-01-09 23:21:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:21:23,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:24,247 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 59 treesize of output 55 [2022-01-09 23:21:24,251 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 209 treesize of output 201 [2022-01-09 23:21:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:21:24,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:24,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349950062] [2022-01-09 23:21:24,344 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:24,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147876039] [2022-01-09 23:21:24,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147876039] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:24,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:24,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2022-01-09 23:21:24,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421293129] [2022-01-09 23:21:24,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:24,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-09 23:21:24,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-09 23:21:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-01-09 23:21:24,346 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 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 23:21:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:25,573 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2022-01-09 23:21:25,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-09 23:21:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 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 30 [2022-01-09 23:21:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:25,574 INFO L225 Difference]: With dead ends: 131 [2022-01-09 23:21:25,574 INFO L226 Difference]: Without dead ends: 129 [2022-01-09 23:21:25,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=434, Invalid=2872, Unknown=0, NotChecked=0, Total=3306 [2022-01-09 23:21:25,576 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 160 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:25,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 238 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 343 Invalid, 0 Unknown, 375 Unchecked, 0.3s Time] [2022-01-09 23:21:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-01-09 23:21:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 81. [2022-01-09 23:21:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 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 23:21:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-01-09 23:21:25,585 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 30 [2022-01-09 23:21:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:25,586 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-01-09 23:21:25,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 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 23:21:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-01-09 23:21:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-09 23:21:25,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:25,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:25,605 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 23:21:25,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:25,788 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:25,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1481990090, now seen corresponding path program 3 times [2022-01-09 23:21:25,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:25,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137323257] [2022-01-09 23:21:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:25,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:25,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680018940] [2022-01-09 23:21:25,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 23:21:25,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:25,809 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 23:21:25,810 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 23:21:25,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-09 23:21:25,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:21:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:21:25,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:21:25,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:21:26,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:26,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137323257] [2022-01-09 23:21:26,043 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:26,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680018940] [2022-01-09 23:21:26,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680018940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:26,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:26,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-09 23:21:26,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135382814] [2022-01-09 23:21:26,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:26,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:21:26,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:21:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:21:26,044 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 23:21:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:26,170 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2022-01-09 23:21:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-09 23:21:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 34 [2022-01-09 23:21:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:26,170 INFO L225 Difference]: With dead ends: 159 [2022-01-09 23:21:26,171 INFO L226 Difference]: Without dead ends: 77 [2022-01-09 23:21:26,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-09 23:21:26,172 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:26,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 53 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:21:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-09 23:21:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2022-01-09 23:21:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 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 23:21:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2022-01-09 23:21:26,178 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 34 [2022-01-09 23:21:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:26,178 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2022-01-09 23:21:26,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 23:21:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2022-01-09 23:21:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-09 23:21:26,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:26,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:26,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:21:26,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:26,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 50405386, now seen corresponding path program 4 times [2022-01-09 23:21:26,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:26,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300559782] [2022-01-09 23:21:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:26,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:26,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:26,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588588901] [2022-01-09 23:21:26,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 23:21:26,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:26,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:21:26,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:21:26,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 23:21:26,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:21:26,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-09 23:21:26,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:21:26,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-09 23:21:26,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300559782] [2022-01-09 23:21:26,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588588901] [2022-01-09 23:21:26,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588588901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:26,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:26,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-09 23:21:26,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430931981] [2022-01-09 23:21:26,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:26,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 23:21:26,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 23:21:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-09 23:21:26,634 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 23:21:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:26,748 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-01-09 23:21:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 23:21:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 34 [2022-01-09 23:21:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:26,749 INFO L225 Difference]: With dead ends: 76 [2022-01-09 23:21:26,749 INFO L226 Difference]: Without dead ends: 61 [2022-01-09 23:21:26,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-09 23:21:26,750 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:26,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 50 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 23:21:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-09 23:21:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 37. [2022-01-09 23:21:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 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 23:21:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-01-09 23:21:26,760 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 34 [2022-01-09 23:21:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:26,760 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-01-09 23:21:26,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 23:21:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-01-09 23:21:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-09 23:21:26,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:26,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:26,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-09 23:21:26,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:26,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 5 times [2022-01-09 23:21:26,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408618315] [2022-01-09 23:21:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:26,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:26,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:26,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703022451] [2022-01-09 23:21:26,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 23:21:26,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:26,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:21:26,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:21:27,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-09 23:21:27,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:21:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-09 23:21:27,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:27,115 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 21 treesize of output 17 [2022-01-09 23:21:27,154 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:27,155 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 25 treesize of output 24 [2022-01-09 23:21:27,194 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:27,195 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 25 treesize of output 24 [2022-01-09 23:21:27,213 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 45 treesize of output 25 [2022-01-09 23:21:27,250 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:27,251 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 27 treesize of output 26 [2022-01-09 23:21:27,295 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:27,296 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 27 treesize of output 26 [2022-01-09 23:21:27,317 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 47 treesize of output 27 [2022-01-09 23:21:27,356 INFO L353 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-01-09 23:21:27,357 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 27 treesize of output 26 [2022-01-09 23:21:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:21:27,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:21:29,546 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int)) (or (forall ((v_ArrVal_208 Int)) (= (+ 2 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_96|)))) is different from false [2022-01-09 23:21:35,347 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int) (v_ArrVal_208 Int)) (or (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_96|)) (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2) 4))) is different from false [2022-01-09 23:21:37,450 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (forall ((v_ArrVal_201 Int)) (= 4 (+ (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_100|)))) is different from false [2022-01-09 23:21:37,871 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_100|)))) is different from false [2022-01-09 23:21:38,309 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_100|)) (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4))) is different from false [2022-01-09 23:21:40,402 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_104| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_104|)) (forall ((v_ArrVal_195 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_104|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_195) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)))) is different from false [2022-01-09 23:21:40,414 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 29 treesize of output 27 [2022-01-09 23:21:40,416 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 88 treesize of output 84 [2022-01-09 23:21:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-01-09 23:21:40,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:21:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408618315] [2022-01-09 23:21:40,466 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 23:21:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703022451] [2022-01-09 23:21:40,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703022451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:21:40,466 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 23:21:40,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 31 [2022-01-09 23:21:40,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190493609] [2022-01-09 23:21:40,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 23:21:40,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-09 23:21:40,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:21:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-09 23:21:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=516, Unknown=17, NotChecked=306, Total=930 [2022-01-09 23:21:40,468 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 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 23:21:42,503 WARN L838 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (* .cse0 .cse0)) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (forall ((|v_ULTIMATE.start_main_~i~0#1_104| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_104|)) (forall ((v_ArrVal_195 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_104|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_195) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)))) (= (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|) 0)) is different from false [2022-01-09 23:21:44,572 WARN L838 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (* .cse0 .cse0)) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|)) |c_ULTIMATE.start_main_~i~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (forall ((v_ArrVal_201 Int)) (= 4 (+ (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_100|)))) (= (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|) 0)) is different from false [2022-01-09 23:21:45,068 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_100|)) (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4))) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4)) is different from false [2022-01-09 23:21:45,512 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_100|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_201) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_100|)))) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) 4)) is different from false [2022-01-09 23:21:47,543 WARN L838 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (* .cse0 .cse0)) (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int)) (or (forall ((v_ArrVal_208 Int)) (= (+ 2 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_96|)))) (= (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|) 0)) is different from false [2022-01-09 23:21:49,553 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int) (v_ArrVal_208 Int)) (or (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_96|)) (= (+ (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2) 4))) (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int)) (or (forall ((v_ArrVal_208 Int)) (= (+ 2 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_96|)))) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2) 4)) is different from false [2022-01-09 23:21:50,004 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_208 Int)) (= (+ 2 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int) (v_ArrVal_208 Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_96|)) (= (+ 2 (select (store (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse0 .cse1 (+ (select .cse0 .cse1) (* (- 1) |c_ULTIMATE.start_main_~i~0#1|)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)))) is different from false [2022-01-09 23:21:52,008 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_96| Int)) (or (forall ((v_ArrVal_208 Int)) (= (+ 2 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_96| 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_208) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 4)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_96|)))) (= (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 2) 4)) is different from false [2022-01-09 23:21:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:21:52,082 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2022-01-09 23:21:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-09 23:21:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 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) Word has length 36 [2022-01-09 23:21:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:21:52,083 INFO L225 Difference]: With dead ends: 81 [2022-01-09 23:21:52,083 INFO L226 Difference]: Without dead ends: 79 [2022-01-09 23:21:52,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 33 SyntacticMatches, 11 SemanticMatches, 40 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=123, Invalid=664, Unknown=25, NotChecked=910, Total=1722 [2022-01-09 23:21:52,084 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 448 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:21:52,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 180 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 448 Unchecked, 0.2s Time] [2022-01-09 23:21:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-01-09 23:21:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2022-01-09 23:21:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 59 states have internal predecessors, (69), 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 23:21:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-01-09 23:21:52,091 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 36 [2022-01-09 23:21:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:21:52,091 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-01-09 23:21:52,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 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 23:21:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-01-09 23:21:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-09 23:21:52,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:21:52,093 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:21:52,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-09 23:21:52,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:52,307 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:21:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:21:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash -441278722, now seen corresponding path program 6 times [2022-01-09 23:21:52,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:21:52,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042078553] [2022-01-09 23:21:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:21:52,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:21:52,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 23:21:52,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297492451] [2022-01-09 23:21:52,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-09 23:21:52,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:21:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:21:52,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:21:52,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 23:21:52,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-09 23:21:52,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 23:21:52,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 71 conjunts are in the unsatisfiable core [2022-01-09 23:21:52,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:21:52,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-09 23:21:52,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-09 23:21:52,495 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 21 treesize of output 17 [2022-01-09 23:21:52,599 INFO L353 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2022-01-09 23:21:52,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 36 [2022-01-09 23:21:52,662 INFO L353 Elim1Store]: treesize reduction 36, result has 47.1 percent of original size [2022-01-09 23:21:52,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 56 [2022-01-09 23:21:52,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:21:52,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:21:52,845 INFO L353 Elim1Store]: treesize reduction 36, result has 47.1 percent of original size [2022-01-09 23:21:52,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 87 treesize of output 101 [2022-01-09 23:21:53,306 INFO L353 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2022-01-09 23:21:53,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 60 [2022-01-09 23:21:53,424 INFO L353 Elim1Store]: treesize reduction 36, result has 47.1 percent of original size [2022-01-09 23:21:53,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 80 [2022-01-09 23:21:53,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:21:53,812 INFO L353 Elim1Store]: treesize reduction 46, result has 37.8 percent of original size [2022-01-09 23:21:53,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 125 [2022-01-09 23:21:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 23:21:56,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 23:21:56,547 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 23:21:56,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 136 [2022-01-09 23:21:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:21:56,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:22:15,146 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 838 treesize of output 774