/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 00:51:09,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 00:51:09,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 00:51:09,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 00:51:09,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 00:51:09,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 00:51:09,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 00:51:09,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 00:51:09,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 00:51:09,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 00:51:09,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 00:51:09,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 00:51:09,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 00:51:09,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 00:51:09,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 00:51:09,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 00:51:09,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 00:51:09,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 00:51:09,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 00:51:09,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 00:51:09,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 00:51:09,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 00:51:09,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 00:51:09,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 00:51:09,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 00:51:09,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 00:51:09,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 00:51:09,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 00:51:09,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 00:51:09,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-31 00:51:09,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 00:51:09,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 00:51:09,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 00:51:09,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 00:51:09,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 00:51:09,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 00:51:09,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 00:51:09,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 00:51:09,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 00:51:09,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 00:51:09,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 00:51:09,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 00:51:09,662 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 00:51:09,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 00:51:09,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 00:51:09,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 00:51:09,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 00:51:09,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 00:51:09,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 00:51:09,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 00:51:09,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 00:51:09,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 00:51:09,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 00:51:09,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 00:51:09,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 00:51:09,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 00:51:09,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 00:51:09,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 00:51:09,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 00:51:09,669 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 00:51:09,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 00:51:09,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 00:51:09,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 00:51:09,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 00:51:09,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 00:51:09,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 00:51:09,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 00:51:09,956 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 00:51:09,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2022-01-31 00:51:10,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7c22573/8cdff13c3a2e46fe83a773f550d712b6/FLAGd2b666f05 [2022-01-31 00:51:10,445 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 00:51:10,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2022-01-31 00:51:10,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7c22573/8cdff13c3a2e46fe83a773f550d712b6/FLAGd2b666f05 [2022-01-31 00:51:10,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d7c22573/8cdff13c3a2e46fe83a773f550d712b6 [2022-01-31 00:51:10,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 00:51:10,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 00:51:10,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 00:51:10,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 00:51:10,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 00:51:10,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdad52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10, skipping insertion in model container [2022-01-31 00:51:10,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 00:51:10,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 00:51:10,617 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/brs3f.c[588,601] [2022-01-31 00:51:10,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 00:51:10,663 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 00:51:10,674 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/brs3f.c[588,601] [2022-01-31 00:51:10,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 00:51:10,691 INFO L208 MainTranslator]: Completed translation [2022-01-31 00:51:10,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10 WrapperNode [2022-01-31 00:51:10,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 00:51:10,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 00:51:10,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 00:51:10,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 00:51:10,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 00:51:10,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 00:51:10,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 00:51:10,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 00:51:10,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (1/1) ... [2022-01-31 00:51:10,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 00:51:10,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:51:10,777 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) [2022-01-31 00:51:10,790 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 [2022-01-31 00:51:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 00:51:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 00:51:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 00:51:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 00:51:10,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 00:51:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 00:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 00:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 00:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 00:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 00:51:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 00:51:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 00:51:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 00:51:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 00:51:10,907 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 00:51:10,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 00:51:11,042 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 00:51:11,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 00:51:11,048 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 00:51:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:51:11 BoogieIcfgContainer [2022-01-31 00:51:11,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 00:51:11,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 00:51:11,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 00:51:11,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 00:51:11,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:51:10" (1/3) ... [2022-01-31 00:51:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256f603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:51:11, skipping insertion in model container [2022-01-31 00:51:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:51:10" (2/3) ... [2022-01-31 00:51:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256f603f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:51:11, skipping insertion in model container [2022-01-31 00:51:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:51:11" (3/3) ... [2022-01-31 00:51:11,065 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2022-01-31 00:51:11,070 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 00:51:11,070 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 00:51:11,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 00:51:11,135 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 [2022-01-31 00:51:11,135 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 00:51:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 00:51:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 00:51:11,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:51:11,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:51:11,177 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:51:11,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:51:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash 816154861, now seen corresponding path program 1 times [2022-01-31 00:51:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:51:11,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504427233] [2022-01-31 00:51:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:11,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:51:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 00:51:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 00:51:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:51:11,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:51:11,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504427233] [2022-01-31 00:51:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504427233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:51:11,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:51:11,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 00:51:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041034801] [2022-01-31 00:51:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:51:11,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 00:51:11,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:51:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 00:51:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 00:51:11,428 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:51:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:51:11,533 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-01-31 00:51:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 00:51:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-01-31 00:51:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:51:11,551 INFO L225 Difference]: With dead ends: 56 [2022-01-31 00:51:11,552 INFO L226 Difference]: Without dead ends: 26 [2022-01-31 00:51:11,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 00:51:11,559 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:51:11,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:51:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-31 00:51:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-01-31 00:51:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-31 00:51:11,607 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2022-01-31 00:51:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:51:11,608 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-31 00:51:11,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:51:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-31 00:51:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-31 00:51:11,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:51:11,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:51:11,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 00:51:11,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:51:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:51:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1231644863, now seen corresponding path program 1 times [2022-01-31 00:51:11,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:51:11,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454466949] [2022-01-31 00:51:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:11,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:51:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 00:51:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 00:51:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:51:11,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:51:11,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454466949] [2022-01-31 00:51:11,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454466949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:51:11,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:51:11,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 00:51:11,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169784253] [2022-01-31 00:51:11,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:51:11,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 00:51:11,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:51:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 00:51:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 00:51:11,797 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:51:11,931 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-01-31 00:51:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 00:51:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-01-31 00:51:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:51:11,933 INFO L225 Difference]: With dead ends: 45 [2022-01-31 00:51:11,934 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 00:51:11,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 00:51:11,936 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:51:11,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:51:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 00:51:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-01-31 00:51:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-01-31 00:51:11,948 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2022-01-31 00:51:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:51:11,949 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-01-31 00:51:11,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-01-31 00:51:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 00:51:11,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:51:11,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:51:11,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 00:51:11,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:51:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:51:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1305126266, now seen corresponding path program 1 times [2022-01-31 00:51:11,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:51:11,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124770662] [2022-01-31 00:51:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:11,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:51:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 00:51:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 00:51:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 00:51:12,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:51:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124770662] [2022-01-31 00:51:12,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124770662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 00:51:12,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 00:51:12,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 00:51:12,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124952641] [2022-01-31 00:51:12,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 00:51:12,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 00:51:12,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:51:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 00:51:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-31 00:51:12,203 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:51:12,374 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-01-31 00:51:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 00:51:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-01-31 00:51:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:51:12,377 INFO L225 Difference]: With dead ends: 39 [2022-01-31 00:51:12,378 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 00:51:12,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 00:51:12,385 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:51:12,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 70 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:51:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 00:51:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-31 00:51:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-01-31 00:51:12,400 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2022-01-31 00:51:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:51:12,401 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-01-31 00:51:12,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:12,401 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-01-31 00:51:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 00:51:12,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:51:12,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:51:12,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 00:51:12,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:51:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:51:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -455123849, now seen corresponding path program 1 times [2022-01-31 00:51:12,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:51:12,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993520243] [2022-01-31 00:51:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:12,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:51:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 00:51:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 00:51:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:51:12,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 00:51:12,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993520243] [2022-01-31 00:51:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993520243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 00:51:12,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466226178] [2022-01-31 00:51:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:12,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:51:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 00:51:12,547 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) [2022-01-31 00:51:12,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 00:51:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 00:51:12,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 00:51:12,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 00:51:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:51:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 00:51:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 00:51:12,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466226178] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 00:51:12,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 00:51:12,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-01-31 00:51:12,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772557977] [2022-01-31 00:51:12,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 00:51:12,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 00:51:12,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 00:51:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 00:51:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 00:51:12,894 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:51:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 00:51:13,033 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-01-31 00:51:13,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 00:51:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-01-31 00:51:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 00:51:13,034 INFO L225 Difference]: With dead ends: 55 [2022-01-31 00:51:13,034 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 00:51:13,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-01-31 00:51:13,036 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 00:51:13,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 44 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 00:51:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 00:51:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-01-31 00:51:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 00:51:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-01-31 00:51:13,042 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2022-01-31 00:51:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 00:51:13,042 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-01-31 00:51:13,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 00:51:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-01-31 00:51:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 00:51:13,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 00:51:13,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 00:51:13,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 00:51:13,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 00:51:13,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 00:51:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 00:51:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash 702007325, now seen corresponding path program 1 times [2022-01-31 00:51:13,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 00:51:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698614663] [2022-01-31 00:51:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 00:51:13,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 00:51:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 00:51:13,287 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 00:51:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 00:51:13,342 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 00:51:13,343 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 00:51:13,343 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 00:51:13,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 00:51:13,348 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-31 00:51:13,350 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 00:51:13,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:51:13 BoogieIcfgContainer [2022-01-31 00:51:13,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 00:51:13,374 INFO L158 Benchmark]: Toolchain (without parser) took 2910.08ms. Allocated memory was 164.6MB in the beginning and 228.6MB in the end (delta: 64.0MB). Free memory was 109.6MB in the beginning and 177.5MB in the end (delta: -67.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 00:51:13,374 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 164.6MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 00:51:13,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.67ms. Allocated memory was 164.6MB in the beginning and 228.6MB in the end (delta: 64.0MB). Free memory was 109.5MB in the beginning and 200.2MB in the end (delta: -90.7MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-01-31 00:51:13,375 INFO L158 Benchmark]: Boogie Preprocessor took 29.10ms. Allocated memory is still 228.6MB. Free memory was 200.2MB in the beginning and 198.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 00:51:13,375 INFO L158 Benchmark]: RCFGBuilder took 327.44ms. Allocated memory is still 228.6MB. Free memory was 198.3MB in the beginning and 186.6MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 00:51:13,376 INFO L158 Benchmark]: TraceAbstraction took 2322.22ms. Allocated memory is still 228.6MB. Free memory was 185.8MB in the beginning and 177.5MB in the end (delta: 8.3MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-01-31 00:51:13,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 164.6MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.67ms. Allocated memory was 164.6MB in the beginning and 228.6MB in the end (delta: 64.0MB). Free memory was 109.5MB in the beginning and 200.2MB in the end (delta: -90.7MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.10ms. Allocated memory is still 228.6MB. Free memory was 200.2MB in the beginning and 198.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 327.44ms. Allocated memory is still 228.6MB. Free memory was 198.3MB in the beginning and 186.6MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2322.22ms. Allocated memory is still 228.6MB. Free memory was 185.8MB in the beginning and 177.5MB in the end (delta: 8.3MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, N=2, sum={5:0}] [L31] COND TRUE i