/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 23:18:17,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 23:18:17,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 23:18:17,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 23:18:17,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 23:18:17,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 23:18:17,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 23:18:17,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 23:18:17,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 23:18:17,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 23:18:17,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 23:18:17,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 23:18:17,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 23:18:17,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 23:18:17,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 23:18:17,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 23:18:17,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 23:18:17,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 23:18:17,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 23:18:17,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 23:18:17,719 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 23:18:17,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 23:18:17,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 23:18:17,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 23:18:17,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 23:18:17,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 23:18:17,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 23:18:17,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 23:18:17,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 23:18:17,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-17 23:18:17,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 23:18:17,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 23:18:17,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-17 23:18:17,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-17 23:18:17,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-17 23:18:17,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-17 23:18:17,759 INFO L138 SettingsManager]: * Use SBE=true [2022-03-17 23:18:17,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 23:18:17,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 23:18:17,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:18:17,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 23:18:17,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-17 23:18:17,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-17 23:18:17,763 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 23:18:17,763 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 23:18:17,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 23:18:17,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 23:18:17,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 23:18:17,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 23:18:17,967 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 23:18:17,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-03-17 23:18:18,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced36d5b/eafa4f4d8f454801ad367008d936753e/FLAGabbba1115 [2022-03-17 23:18:18,392 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 23:18:18,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-03-17 23:18:18,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced36d5b/eafa4f4d8f454801ad367008d936753e/FLAGabbba1115 [2022-03-17 23:18:18,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced36d5b/eafa4f4d8f454801ad367008d936753e [2022-03-17 23:18:18,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 23:18:18,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 23:18:18,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 23:18:18,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 23:18:18,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 23:18:18,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbac692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18, skipping insertion in model container [2022-03-17 23:18:18,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 23:18:18,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 23:18:18,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-03-17 23:18:18,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:18:18,657 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 23:18:18,686 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-03-17 23:18:18,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 23:18:18,701 INFO L208 MainTranslator]: Completed translation [2022-03-17 23:18:18,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18 WrapperNode [2022-03-17 23:18:18,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 23:18:18,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 23:18:18,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 23:18:18,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 23:18:18,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 23:18:18,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 23:18:18,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 23:18:18,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 23:18:18,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (1/1) ... [2022-03-17 23:18:18,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 23:18:18,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 23:18:18,768 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) [2022-03-17 23:18:18,786 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 [2022-03-17 23:18:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 23:18:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 23:18:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 23:18:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 23:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 23:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 23:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 23:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 23:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 23:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 23:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 23:18:18,853 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 23:18:18,854 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 23:18:19,013 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 23:18:19,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 23:18:19,018 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 23:18:19,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:18:19 BoogieIcfgContainer [2022-03-17 23:18:19,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 23:18:19,019 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 23:18:19,020 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 23:18:19,020 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 23:18:19,023 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:18:19" (1/1) ... [2022-03-17 23:18:19,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:18:19 BasicIcfg [2022-03-17 23:18:19,040 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 23:18:19,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 23:18:19,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 23:18:19,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 23:18:19,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:18:18" (1/4) ... [2022-03-17 23:18:19,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da83477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:18:19, skipping insertion in model container [2022-03-17 23:18:19,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:18:18" (2/4) ... [2022-03-17 23:18:19,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da83477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:18:19, skipping insertion in model container [2022-03-17 23:18:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 11:18:19" (3/4) ... [2022-03-17 23:18:19,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da83477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:18:19, skipping insertion in model container [2022-03-17 23:18:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 11:18:19" (4/4) ... [2022-03-17 23:18:19,046 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.cqvasr [2022-03-17 23:18:19,049 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-17 23:18:19,049 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 23:18:19,078 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 23:18:19,082 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-17 23:18:19,082 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 23:18:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 23:18:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-17 23:18:19,096 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,097 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,097 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1676912857, now seen corresponding path program 1 times [2022-03-17 23:18:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977637338] [2022-03-17 23:18:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:18:19,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:19,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977637338] [2022-03-17 23:18:19,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977637338] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:19,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:19,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528737975] [2022-03-17 23:18:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:19,257 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:19,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:19,277 INFO L87 Difference]: Start difference. First operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:19,392 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2022-03-17 23:18:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:19,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-17 23:18:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:19,400 INFO L225 Difference]: With dead ends: 136 [2022-03-17 23:18:19,400 INFO L226 Difference]: Without dead ends: 83 [2022-03-17 23:18:19,402 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:19,405 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:19,405 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 79 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-03-17 23:18:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-03-17 23:18:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.5443037974683544) internal successors, (122), 79 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2022-03-17 23:18:19,434 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 9 [2022-03-17 23:18:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:19,435 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2022-03-17 23:18:19,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2022-03-17 23:18:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 23:18:19,436 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,436 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,436 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 23:18:19,436 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash 141831786, now seen corresponding path program 1 times [2022-03-17 23:18:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255023737] [2022-03-17 23:18:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 23:18:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:19,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255023737] [2022-03-17 23:18:19,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255023737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:19,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:19,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758288214] [2022-03-17 23:18:19,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:19,475 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:19,476 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:19,559 INFO L93 Difference]: Finished difference Result 160 states and 250 transitions. [2022-03-17 23:18:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:19,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-17 23:18:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:19,561 INFO L225 Difference]: With dead ends: 160 [2022-03-17 23:18:19,561 INFO L226 Difference]: Without dead ends: 120 [2022-03-17 23:18:19,562 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:19,563 INFO L912 BasicCegarLoop]: 114 mSDtfsCounter, 118 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:19,563 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 121 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-03-17 23:18:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-03-17 23:18:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 116 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 179 transitions. [2022-03-17 23:18:19,574 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 179 transitions. Word has length 14 [2022-03-17 23:18:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:19,575 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 179 transitions. [2022-03-17 23:18:19,575 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 179 transitions. [2022-03-17 23:18:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 23:18:19,576 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,576 INFO L500 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,576 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 23:18:19,576 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1247550592, now seen corresponding path program 1 times [2022-03-17 23:18:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43374642] [2022-03-17 23:18:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-17 23:18:19,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:19,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43374642] [2022-03-17 23:18:19,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43374642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:19,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:19,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801498704] [2022-03-17 23:18:19,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:19,612 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:19,613 INFO L87 Difference]: Start difference. First operand 120 states and 179 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:19,693 INFO L93 Difference]: Finished difference Result 278 states and 429 transitions. [2022-03-17 23:18:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-17 23:18:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:19,694 INFO L225 Difference]: With dead ends: 278 [2022-03-17 23:18:19,695 INFO L226 Difference]: Without dead ends: 164 [2022-03-17 23:18:19,695 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:19,696 INFO L912 BasicCegarLoop]: 72 mSDtfsCounter, 84 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:19,696 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 79 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-17 23:18:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2022-03-17 23:18:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.394736842105263) internal successors, (212), 152 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2022-03-17 23:18:19,706 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 215 transitions. Word has length 20 [2022-03-17 23:18:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:19,707 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 215 transitions. [2022-03-17 23:18:19,707 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 215 transitions. [2022-03-17 23:18:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 23:18:19,707 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,707 INFO L500 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,708 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 23:18:19,708 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1247520801, now seen corresponding path program 1 times [2022-03-17 23:18:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425514747] [2022-03-17 23:18:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-17 23:18:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:19,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425514747] [2022-03-17 23:18:19,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425514747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:19,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:19,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720484679] [2022-03-17 23:18:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:19,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:19,741 INFO L87 Difference]: Start difference. First operand 156 states and 215 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:19,812 INFO L93 Difference]: Finished difference Result 306 states and 431 transitions. [2022-03-17 23:18:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-17 23:18:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:19,814 INFO L225 Difference]: With dead ends: 306 [2022-03-17 23:18:19,814 INFO L226 Difference]: Without dead ends: 205 [2022-03-17 23:18:19,815 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:19,815 INFO L912 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:19,816 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-17 23:18:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-03-17 23:18:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.3880597014925373) internal successors, (279), 201 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 282 transitions. [2022-03-17 23:18:19,827 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 282 transitions. Word has length 20 [2022-03-17 23:18:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:19,827 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 282 transitions. [2022-03-17 23:18:19,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 282 transitions. [2022-03-17 23:18:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-17 23:18:19,828 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,829 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 23:18:19,829 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1375802200, now seen corresponding path program 1 times [2022-03-17 23:18:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630350008] [2022-03-17 23:18:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-17 23:18:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630350008] [2022-03-17 23:18:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630350008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:19,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:19,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:19,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598481020] [2022-03-17 23:18:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:19,870 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:19,871 INFO L87 Difference]: Start difference. First operand 205 states and 282 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:19,953 INFO L93 Difference]: Finished difference Result 406 states and 566 transitions. [2022-03-17 23:18:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-03-17 23:18:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:19,955 INFO L225 Difference]: With dead ends: 406 [2022-03-17 23:18:19,955 INFO L226 Difference]: Without dead ends: 256 [2022-03-17 23:18:19,955 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:19,956 INFO L912 BasicCegarLoop]: 116 mSDtfsCounter, 107 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:19,956 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 123 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-17 23:18:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2022-03-17 23:18:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.388) internal successors, (347), 250 states have internal predecessors, (347), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 350 transitions. [2022-03-17 23:18:19,967 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 350 transitions. Word has length 49 [2022-03-17 23:18:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:19,968 INFO L478 AbstractCegarLoop]: Abstraction has 254 states and 350 transitions. [2022-03-17 23:18:19,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 350 transitions. [2022-03-17 23:18:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 23:18:19,969 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:19,969 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:19,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 23:18:19,969 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -346615166, now seen corresponding path program 1 times [2022-03-17 23:18:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:19,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258556912] [2022-03-17 23:18:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-17 23:18:20,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:20,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258556912] [2022-03-17 23:18:20,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258556912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:20,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:20,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425018965] [2022-03-17 23:18:20,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:20,007 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:20,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:20,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:20,008 INFO L87 Difference]: Start difference. First operand 254 states and 350 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:20,076 INFO L93 Difference]: Finished difference Result 510 states and 719 transitions. [2022-03-17 23:18:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:20,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-17 23:18:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:20,077 INFO L225 Difference]: With dead ends: 510 [2022-03-17 23:18:20,077 INFO L226 Difference]: Without dead ends: 186 [2022-03-17 23:18:20,078 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:20,078 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 85 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:20,079 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 77 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-03-17 23:18:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-03-17 23:18:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.2905027932960893) internal successors, (231), 179 states have internal predecessors, (231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-03-17 23:18:20,085 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 52 [2022-03-17 23:18:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:20,085 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-03-17 23:18:20,085 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-03-17 23:18:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-17 23:18:20,087 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 23:18:20,087 INFO L500 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:20,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 23:18:20,087 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 23:18:20,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 23:18:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash -987922748, now seen corresponding path program 1 times [2022-03-17 23:18:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 23:18:20,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906403108] [2022-03-17 23:18:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 23:18:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 23:18:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 23:18:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 23:18:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-17 23:18:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 23:18:20,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906403108] [2022-03-17 23:18:20,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906403108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 23:18:20,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 23:18:20,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 23:18:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344918414] [2022-03-17 23:18:20,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 23:18:20,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 23:18:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 23:18:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 23:18:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 23:18:20,138 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 23:18:20,204 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2022-03-17 23:18:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 23:18:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-03-17 23:18:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 23:18:20,206 INFO L225 Difference]: With dead ends: 299 [2022-03-17 23:18:20,206 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 23:18:20,207 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 23:18:20,209 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 75 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 23:18:20,209 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 83 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 23:18:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 23:18:20,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 23:18:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-17 23:18:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 23:18:20,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-03-17 23:18:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 23:18:20,211 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 23:18:20,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 23:18:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 23:18:20,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 23:18:20,214 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 23:18:20,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 23:18:20,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-17 23:18:20,453 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-17 23:18:20,453 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-17 23:18:20,454 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 229) the Hoare annotation is: true [2022-03-17 23:18:20,454 INFO L878 garLoopResultBuilder]: At program point L188(lines 34 223) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0))) (or (and .cse0 (<= 8656 main_~s__state~0)) (= main_~blastFlag~0 0) (= main_~blastFlag~0 1) (and .cse0 (not (= main_~s__hit~0 0)) (<= 8640 main_~s__state~0)) (= 2 main_~blastFlag~0))) [2022-03-17 23:18:20,454 INFO L885 garLoopResultBuilder]: At program point L225(lines 20 229) the Hoare annotation is: true [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 20 229) no Hoare annotation was computed. [2022-03-17 23:18:20,454 INFO L878 garLoopResultBuilder]: At program point L185(lines 20 229) the Hoare annotation is: false [2022-03-17 23:18:20,454 INFO L882 garLoopResultBuilder]: For program point L41(lines 41 216) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 20 229) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L878 garLoopResultBuilder]: At program point L42(lines 41 216) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point L44(lines 44 215) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point L90-1(lines 90 92) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L878 garLoopResultBuilder]: At program point L45(lines 44 215) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point L48(lines 48 213) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point L97-1(lines 86 195) no Hoare annotation was computed. [2022-03-17 23:18:20,455 INFO L878 garLoopResultBuilder]: At program point L49(lines 48 213) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,455 INFO L882 garLoopResultBuilder]: For program point L52(lines 52 211) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L53(lines 52 211) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L56(lines 56 209) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L57(lines 56 209) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L60(lines 60 207) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L117(lines 117 135) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L61(lines 60 207) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L64(lines 64 205) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L124(lines 117 135) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L65(lines 64 205) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L68(lines 68 203) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L882 garLoopResultBuilder]: For program point L126(lines 126 130) no Hoare annotation was computed. [2022-03-17 23:18:20,456 INFO L878 garLoopResultBuilder]: At program point L132(lines 125 134) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L147(lines 147 151) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L878 garLoopResultBuilder]: At program point L69(lines 68 203) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L72(lines 72 201) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L878 garLoopResultBuilder]: At program point L73(lines 72 201) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L76(lines 76 199) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L878 garLoopResultBuilder]: At program point L77(lines 76 199) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (= main_~blastFlag~0 1) .cse0) (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L80(lines 80 197) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L163-1(lines 86 195) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L878 garLoopResultBuilder]: At program point L81(lines 80 197) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) .cse0) (and (= main_~blastFlag~0 1) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= 2 main_~blastFlag~0) .cse0))) [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L84(lines 84 195) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L882 garLoopResultBuilder]: For program point L174-1(lines 174 176) no Hoare annotation was computed. [2022-03-17 23:18:20,457 INFO L878 garLoopResultBuilder]: At program point L85(lines 84 195) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) .cse0) (and (= main_~blastFlag~0 1) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= 2 main_~blastFlag~0) .cse0))) [2022-03-17 23:18:20,458 INFO L882 garLoopResultBuilder]: For program point L181-1(lines 86 195) no Hoare annotation was computed. [2022-03-17 23:18:20,458 INFO L882 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2022-03-17 23:18:20,460 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-03-17 23:18:20,461 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 23:18:20,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:18:20 BasicIcfg [2022-03-17 23:18:20,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 23:18:20,473 INFO L158 Benchmark]: Toolchain (without parser) took 2052.53ms. Allocated memory was 199.2MB in the beginning and 274.7MB in the end (delta: 75.5MB). Free memory was 143.2MB in the beginning and 183.4MB in the end (delta: -40.2MB). Peak memory consumption was 36.3MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,474 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 159.5MB in the beginning and 159.4MB in the end (delta: 73.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 23:18:20,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.93ms. Allocated memory was 199.2MB in the beginning and 274.7MB in the end (delta: 75.5MB). Free memory was 143.1MB in the beginning and 245.2MB in the end (delta: -102.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,474 INFO L158 Benchmark]: Boogie Preprocessor took 38.52ms. Allocated memory is still 274.7MB. Free memory was 245.2MB in the beginning and 243.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,474 INFO L158 Benchmark]: RCFGBuilder took 276.83ms. Allocated memory is still 274.7MB. Free memory was 243.7MB in the beginning and 230.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,475 INFO L158 Benchmark]: IcfgTransformer took 21.08ms. Allocated memory is still 274.7MB. Free memory was 230.6MB in the beginning and 229.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,475 INFO L158 Benchmark]: TraceAbstraction took 1431.33ms. Allocated memory is still 274.7MB. Free memory was 228.5MB in the beginning and 183.4MB in the end (delta: 45.2MB). Peak memory consumption was 46.2MB. Max. memory is 8.0GB. [2022-03-17 23:18:20,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 199.2MB. Free memory was 159.5MB in the beginning and 159.4MB in the end (delta: 73.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.93ms. Allocated memory was 199.2MB in the beginning and 274.7MB in the end (delta: 75.5MB). Free memory was 143.1MB in the beginning and 245.2MB in the end (delta: -102.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.52ms. Allocated memory is still 274.7MB. Free memory was 245.2MB in the beginning and 243.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 276.83ms. Allocated memory is still 274.7MB. Free memory was 243.7MB in the beginning and 230.6MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 21.08ms. Allocated memory is still 274.7MB. Free memory was 230.6MB in the beginning and 229.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1431.33ms. Allocated memory is still 274.7MB. Free memory was 228.5MB in the beginning and 183.4MB in the end (delta: 45.2MB). Peak memory consumption was 46.2MB. 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 - PositiveResult [Line: 227]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 773 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 773 mSDsluCounter, 686 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 488 IncrementalHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 635 mSDtfsCounter, 488 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 87 NumberOfFragments, 285 HoareAnnotationTreeSize, 21 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 193/193 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: (((3 == blastFlag && 8656 <= s__state) || (blastFlag == 1 && 8656 <= s__state)) || (blastFlag == 0 && 8656 <= s__state)) || (2 == blastFlag && 8656 <= s__state) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((blastFlag == 1 && 8640 <= s__state) || (8640 <= s__state && 2 == blastFlag)) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((3 == blastFlag && 8656 <= s__state) || blastFlag == 0) || blastFlag == 1) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || 2 == blastFlag - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: (((3 == blastFlag && 8656 <= s__state) || (blastFlag == 1 && 8656 <= s__state)) || (blastFlag == 0 && 8656 <= s__state)) || (2 == blastFlag && 8656 <= s__state) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-03-17 23:18:20,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...