/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:33:12,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:33:12,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:33:12,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:33:12,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:33:12,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:33:12,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:33:12,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:33:12,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:33:12,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:33:12,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:33:12,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:33:12,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:33:12,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:33:12,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:33:12,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:33:12,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:33:12,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:33:12,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:33:12,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:33:12,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:33:12,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:33:12,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:33:12,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:33:12,777 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:33:12,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:33:12,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:33:12,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:33:12,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:12,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:33:12,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:33:12,780 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:33:12,780 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:33:12,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:33:12,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:33:12,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:33:12,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:33:12,994 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:33:12,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2022-02-14 20:33:13,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60824bbb/76b06f4d07d9404d8f008f0c1fe06552/FLAGc3a6064c5 [2022-02-14 20:33:13,391 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:33:13,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2022-02-14 20:33:13,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60824bbb/76b06f4d07d9404d8f008f0c1fe06552/FLAGc3a6064c5 [2022-02-14 20:33:13,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60824bbb/76b06f4d07d9404d8f008f0c1fe06552 [2022-02-14 20:33:13,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:33:13,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:33:13,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:13,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:33:13,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:33:13,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184c7dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13, skipping insertion in model container [2022-02-14 20:33:13,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:33:13,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:33:13,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-02-14 20:33:13,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:13,626 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:33:13,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-02-14 20:33:13,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:13,647 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:33:13,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13 WrapperNode [2022-02-14 20:33:13,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:13,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:33:13,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:33:13,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:33:13,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:33:13,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:33:13,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:33:13,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:33:13,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:13,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:13,713 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) [2022-02-14 20:33:13,731 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 [2022-02-14 20:33:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:33:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:33:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:33:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:33:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-14 20:33:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:33:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:33:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:33:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:33:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:33:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:33:13,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:33:13,794 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:33:13,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:33:13,916 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:33:13,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:33:13,919 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:33:13,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:13 BoogieIcfgContainer [2022-02-14 20:33:13,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:33:13,921 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:33:13,921 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:33:13,935 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:33:13,937 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:13" (1/1) ... [2022-02-14 20:33:13,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:13 BasicIcfg [2022-02-14 20:33:13,946 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:33:13,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:33:13,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:33:13,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:33:13,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:33:13" (1/4) ... [2022-02-14 20:33:13,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb73edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:13, skipping insertion in model container [2022-02-14 20:33:13,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:13" (2/4) ... [2022-02-14 20:33:13,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb73edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:13, skipping insertion in model container [2022-02-14 20:33:13,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:13" (3/4) ... [2022-02-14 20:33:13,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb73edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:13, skipping insertion in model container [2022-02-14 20:33:13,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:13" (4/4) ... [2022-02-14 20:33:13,953 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.iJordan [2022-02-14 20:33:13,957 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:33:13,957 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:33:13,995 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:33:14,002 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 20:33:14,002 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:33:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:33:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-14 20:33:14,018 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:14,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:14,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1546198667, now seen corresponding path program 1 times [2022-02-14 20:33:14,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:14,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030794040] [2022-02-14 20:33:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:14,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:14,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030794040] [2022-02-14 20:33:14,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030794040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:33:14,426 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:33:14,426 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 20:33:14,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077345393] [2022-02-14 20:33:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:33:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 20:33:14,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 20:33:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-14 20:33:14,453 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:33:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:14,637 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-02-14 20:33:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 20:33:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-02-14 20:33:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:14,644 INFO L225 Difference]: With dead ends: 27 [2022-02-14 20:33:14,644 INFO L226 Difference]: Without dead ends: 27 [2022-02-14 20:33:14,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-02-14 20:33:14,648 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:14,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:33:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-14 20:33:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-02-14 20:33:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:33:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-02-14 20:33:14,678 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2022-02-14 20:33:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:14,679 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-02-14 20:33:14,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:33:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-02-14 20:33:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-14 20:33:14,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:14,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:33:14,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash 35168483, now seen corresponding path program 1 times [2022-02-14 20:33:14,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:14,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936841855] [2022-02-14 20:33:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 20:33:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:14,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:14,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936841855] [2022-02-14 20:33:14,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936841855] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:33:14,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562585614] [2022-02-14 20:33:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:14,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:14,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:33:14,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 20:33:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-14 20:33:14,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:33:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:15,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:33:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:15,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562585614] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:33:15,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:33:15,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-02-14 20:33:15,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190024114] [2022-02-14 20:33:15,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:33:15,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-14 20:33:15,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-14 20:33:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-02-14 20:33:15,737 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 20:33:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:16,470 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-02-14 20:33:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 20:33:16,471 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-02-14 20:33:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:16,472 INFO L225 Difference]: With dead ends: 39 [2022-02-14 20:33:16,472 INFO L226 Difference]: Without dead ends: 39 [2022-02-14 20:33:16,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-02-14 20:33:16,474 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:16,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 61 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 20:33:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-14 20:33:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-02-14 20:33:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 20:33:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-02-14 20:33:16,480 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 21 [2022-02-14 20:33:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:16,480 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-02-14 20:33:16,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 20:33:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-02-14 20:33:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-14 20:33:16,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:16,481 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:16,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 20:33:16,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:16,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash -407833038, now seen corresponding path program 1 times [2022-02-14 20:33:16,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:16,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71513286] [2022-02-14 20:33:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:16,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 20:33:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 20:33:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-14 20:33:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 20:33:16,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:16,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71513286] [2022-02-14 20:33:16,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71513286] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:33:16,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264372393] [2022-02-14 20:33:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:16,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:33:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 20:33:16,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 20:33:16,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:33:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 20:33:17,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:33:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-14 20:33:17,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264372393] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:33:17,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:33:17,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-02-14 20:33:17,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761125530] [2022-02-14 20:33:17,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:33:17,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 20:33:17,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 20:33:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-14 20:33:17,340 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 20:33:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:17,922 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2022-02-14 20:33:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 20:33:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2022-02-14 20:33:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:17,923 INFO L225 Difference]: With dead ends: 59 [2022-02-14 20:33:17,923 INFO L226 Difference]: Without dead ends: 59 [2022-02-14 20:33:17,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2022-02-14 20:33:17,924 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:17,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 20:33:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-02-14 20:33:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-02-14 20:33:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-14 20:33:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-02-14 20:33:17,930 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2022-02-14 20:33:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:17,930 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-02-14 20:33:17,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 20:33:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-02-14 20:33:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-14 20:33:17,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:17,932 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:17,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 20:33:18,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 20:33:18,143 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash 562981354, now seen corresponding path program 2 times [2022-02-14 20:33:18,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:18,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136519683] [2022-02-14 20:33:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-02-14 20:33:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 20:33:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-02-14 20:33:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-02-14 20:33:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-02-14 20:33:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-02-14 20:33:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-02-14 20:33:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-02-14 20:33:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-14 20:33:18,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:18,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136519683] [2022-02-14 20:33:18,501 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136519683] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:33:18,501 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731581722] [2022-02-14 20:33:18,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 20:33:18,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:18,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:33:18,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 20:33:18,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 20:33:18,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 20:33:18,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-14 20:33:18,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:33:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-14 20:33:18,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:33:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-14 20:33:19,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731581722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:33:19,062 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:33:19,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-02-14 20:33:19,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697807865] [2022-02-14 20:33:19,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:33:19,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-14 20:33:19,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-14 20:33:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-02-14 20:33:19,064 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-14 20:33:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:19,434 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2022-02-14 20:33:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-14 20:33:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2022-02-14 20:33:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:19,435 INFO L225 Difference]: With dead ends: 67 [2022-02-14 20:33:19,436 INFO L226 Difference]: Without dead ends: 67 [2022-02-14 20:33:19,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-02-14 20:33:19,437 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:19,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-14 20:33:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-02-14 20:33:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-02-14 20:33:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-14 20:33:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2022-02-14 20:33:19,443 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 77 [2022-02-14 20:33:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:19,443 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2022-02-14 20:33:19,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-14 20:33:19,444 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2022-02-14 20:33:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-02-14 20:33:19,445 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:19,445 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:19,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 20:33:19,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:19,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1970006374, now seen corresponding path program 3 times [2022-02-14 20:33:19,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:19,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689294046] [2022-02-14 20:33:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 20:33:19,717 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-14 20:33:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 20:33:19,767 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-14 20:33:19,768 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-14 20:33:19,768 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:33:19,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-14 20:33:19,771 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-02-14 20:33:19,773 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:33:19,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:19 BasicIcfg [2022-02-14 20:33:19,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:33:19,794 INFO L158 Benchmark]: Toolchain (without parser) took 6382.21ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 122.7MB in the beginning and 161.8MB in the end (delta: -39.0MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,795 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:33:19,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.53ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 122.6MB in the beginning and 216.3MB in the end (delta: -93.7MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,795 INFO L158 Benchmark]: Boogie Preprocessor took 27.07ms. Allocated memory is still 243.3MB. Free memory was 216.3MB in the beginning and 214.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,795 INFO L158 Benchmark]: RCFGBuilder took 244.39ms. Allocated memory is still 243.3MB. Free memory was 214.8MB in the beginning and 203.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,795 INFO L158 Benchmark]: IcfgTransformer took 25.16ms. Allocated memory is still 243.3MB. Free memory was 203.8MB in the beginning and 202.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,796 INFO L158 Benchmark]: TraceAbstraction took 5846.73ms. Allocated memory is still 243.3MB. Free memory was 202.3MB in the beginning and 161.8MB in the end (delta: 40.5MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:19,797 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 178.3MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.53ms. Allocated memory was 178.3MB in the beginning and 243.3MB in the end (delta: 65.0MB). Free memory was 122.6MB in the beginning and 216.3MB in the end (delta: -93.7MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.07ms. Allocated memory is still 243.3MB. Free memory was 216.3MB in the beginning and 214.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.39ms. Allocated memory is still 243.3MB. Free memory was 214.8MB in the beginning and 203.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 25.16ms. Allocated memory is still 243.3MB. Free memory was 203.8MB in the beginning and 202.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5846.73ms. Allocated memory is still 243.3MB. Free memory was 202.3MB in the beginning and 161.8MB in the end (delta: 40.5MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [loop1=50, n1=51, sn=0, x=0] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=0, x=0] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=2, x=0] [L28] x++ VAL [loop1=50, n1=51, sn=2, x=1] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=2, x=1] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=2, x=1] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=4, x=1] [L28] x++ VAL [loop1=50, n1=51, sn=4, x=2] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=4, x=2] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=4, x=2] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=6, x=2] [L28] x++ VAL [loop1=50, n1=51, sn=6, x=3] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=6, x=3] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=6, x=3] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=8, x=3] [L28] x++ VAL [loop1=50, n1=51, sn=8, x=4] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=8, x=4] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=8, x=4] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=10, x=4] [L28] x++ VAL [loop1=50, n1=51, sn=10, x=5] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=10, x=5] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=10, x=5] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=12, x=5] [L28] x++ VAL [loop1=50, n1=51, sn=12, x=6] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=12, x=6] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=12, x=6] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=14, x=6] [L28] x++ VAL [loop1=50, n1=51, sn=14, x=7] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=14, x=7] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=14, x=7] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=16, x=7] [L28] x++ VAL [loop1=50, n1=51, sn=16, x=8] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=16, x=8] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=16, x=8] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=18, x=8] [L28] x++ VAL [loop1=50, n1=51, sn=18, x=9] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=18, x=9] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=18, x=9] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=20, x=9] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=10] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=20, x=10] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=20, x=10] [L25] COND FALSE !(x<10) VAL [loop1=50, n1=51, sn=20, x=10] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=11] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 893 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 73 mSDtfsCounter, 893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 274 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1670 SizeOfPredicates, 6 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 510/960 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 RESULT: Ultimate proved your program to be incorrect! [2022-02-14 20:33:19,809 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...