/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/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:33:13,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:33:13,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:33:13,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:33:13,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:33:13,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:33:13,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:33:13,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:33:13,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:33:13,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:33:13,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:33:13,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:33:13,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:33:13,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:33:13,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:33:13,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:33:13,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:33:13,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:33:13,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:33:13,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:33:13,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:33:13,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:33:13,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:33:13,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:33:13,784 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:33:13,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:33:13,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:33:13,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:33:13,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:33:13,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:33:13,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:33:13,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:33:13,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:33:13,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:33:13,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:13,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:33:13,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:33:13,788 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:33:13,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:33:14,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:33:14,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:33:14,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:33:14,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:33:14,030 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:33:14,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2022-02-14 20:33:14,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d88e6a5/4ec24af23cf249ff807cf8d48668bbfc/FLAGf99e20a33 [2022-02-14 20:33:14,489 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:33:14,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i [2022-02-14 20:33:14,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d88e6a5/4ec24af23cf249ff807cf8d48668bbfc/FLAGf99e20a33 [2022-02-14 20:33:14,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d88e6a5/4ec24af23cf249ff807cf8d48668bbfc [2022-02-14 20:33:14,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:33:14,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:33:14,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:14,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:33:14,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:33:14,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164ac746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14, skipping insertion in model container [2022-02-14 20:33:14,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:33:14,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:33:14,692 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/sum03-2.i[807,820] [2022-02-14 20:33:14,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:14,710 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:33:14,722 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/sum03-2.i[807,820] [2022-02-14 20:33:14,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:14,737 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:33:14,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14 WrapperNode [2022-02-14 20:33:14,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:14,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:33:14,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:33:14,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:33:14,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:33:14,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:33:14,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:33:14,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:33:14,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (1/1) ... [2022-02-14 20:33:14,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:14,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:14,788 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 20:33:14,809 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 20:33:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:33:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:33:14,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:33:14,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:33:14,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:33:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:33:14,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:33:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:33:14,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:33:14,880 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:33:14,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:33:15,000 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:33:15,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:33:15,005 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:33:15,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:15 BoogieIcfgContainer [2022-02-14 20:33:15,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:33:15,008 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:33:15,008 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:33:15,009 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:33:15,013 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:15" (1/1) ... [2022-02-14 20:33:15,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:15 BasicIcfg [2022-02-14 20:33:15,035 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:33:15,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:33:15,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:33:15,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:33:15,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:33:14" (1/4) ... [2022-02-14 20:33:15,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8397ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:15, skipping insertion in model container [2022-02-14 20:33:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:14" (2/4) ... [2022-02-14 20:33:15,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8397ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:15, skipping insertion in model container [2022-02-14 20:33:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:15" (3/4) ... [2022-02-14 20:33:15,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8397ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:15, skipping insertion in model container [2022-02-14 20:33:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:15" (4/4) ... [2022-02-14 20:33:15,059 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-2.iJordan [2022-02-14 20:33:15,064 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:33:15,064 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:33:15,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:33:15,132 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 20:33:15,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:33:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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 20:33:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-14 20:33:15,169 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:15,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:15,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1196085861, now seen corresponding path program 1 times [2022-02-14 20:33:15,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:15,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739720722] [2022-02-14 20:33:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:15,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:15,716 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 20:33:15,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:15,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739720722] [2022-02-14 20:33:15,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739720722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:33:15,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:33:15,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-14 20:33:15,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510080121] [2022-02-14 20:33:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:33:15,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 20:33:15,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 20:33:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-02-14 20:33:15,751 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 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 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 20:33:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:15,898 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-02-14 20:33:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 20:33:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 11 [2022-02-14 20:33:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:15,907 INFO L225 Difference]: With dead ends: 21 [2022-02-14 20:33:15,907 INFO L226 Difference]: Without dead ends: 21 [2022-02-14 20:33:15,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-14 20:33:15,916 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:15,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:33:15,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-02-14 20:33:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-02-14 20:33:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 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 20:33:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-02-14 20:33:15,953 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2022-02-14 20:33:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:15,953 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-02-14 20:33:15,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 20:33:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-02-14 20:33:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-14 20:33:15,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:15,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:15,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:33:15,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash 593480926, now seen corresponding path program 1 times [2022-02-14 20:33:15,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:15,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780116825] [2022-02-14 20:33:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-14 20:33:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:16,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:16,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780116825] [2022-02-14 20:33:16,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780116825] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:33:16,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538954731] [2022-02-14 20:33:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:16,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:33:16,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:16,215 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 20:33:16,254 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 20:33:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:16,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-14 20:33:16,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 20:33:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:16,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 20:33:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:16,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538954731] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 20:33:16,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-14 20:33:16,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-02-14 20:33:16,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930670466] [2022-02-14 20:33:16,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-14 20:33:16,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 20:33:16,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 20:33:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-02-14 20:33:16,905 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:33:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:17,218 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-02-14 20:33:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-14 20:33:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2022-02-14 20:33:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:17,219 INFO L225 Difference]: With dead ends: 23 [2022-02-14 20:33:17,219 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 20:33:17,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-02-14 20:33:17,221 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:17,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:33:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 20:33:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 20:33:17,222 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) [2022-02-14 20:33:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 20:33:17,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-02-14 20:33:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:17,223 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 20:33:17,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 20:33:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 20:33:17,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 20:33:17,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:33:17,251 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 20:33:17,443 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 20:33:17,446 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-14 20:33:17,447 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:33:17,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:17 BasicIcfg [2022-02-14 20:33:17,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:33:17,452 INFO L158 Benchmark]: Toolchain (without parser) took 2935.00ms. Allocated memory was 205.5MB in the beginning and 283.1MB in the end (delta: 77.6MB). Free memory was 153.1MB in the beginning and 143.3MB in the end (delta: 9.8MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,452 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:33:17,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.09ms. Allocated memory was 205.5MB in the beginning and 283.1MB in the end (delta: 77.6MB). Free memory was 152.9MB in the beginning and 256.6MB in the end (delta: -103.7MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,453 INFO L158 Benchmark]: Boogie Preprocessor took 20.32ms. Allocated memory is still 283.1MB. Free memory was 256.6MB in the beginning and 255.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,453 INFO L158 Benchmark]: RCFGBuilder took 248.05ms. Allocated memory is still 283.1MB. Free memory was 255.0MB in the beginning and 245.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,454 INFO L158 Benchmark]: IcfgTransformer took 27.12ms. Allocated memory is still 283.1MB. Free memory was 245.0MB in the beginning and 243.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,454 INFO L158 Benchmark]: TraceAbstraction took 2414.99ms. Allocated memory is still 283.1MB. Free memory was 243.4MB in the beginning and 143.3MB in the end (delta: 100.1MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2022-02-14 20:33:17,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 205.5MB. Free memory is still 169.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.09ms. Allocated memory was 205.5MB in the beginning and 283.1MB in the end (delta: 77.6MB). Free memory was 152.9MB in the beginning and 256.6MB in the end (delta: -103.7MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.32ms. Allocated memory is still 283.1MB. Free memory was 256.6MB in the beginning and 255.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 248.05ms. Allocated memory is still 283.1MB. Free memory was 255.0MB in the beginning and 245.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 27.12ms. Allocated memory is still 283.1MB. Free memory was 245.0MB in the beginning and 243.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2414.99ms. Allocated memory is still 283.1MB. Free memory was 243.4MB in the beginning and 143.3MB in the end (delta: 100.1MB). Peak memory consumption was 100.7MB. 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: 15]: 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 19 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 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 RESULT: Ultimate proved your program to be correct! [2022-02-14 20:33:17,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...