/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 23:13:16,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 23:13:16,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 23:13:16,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 23:13:16,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 23:13:16,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 23:13:16,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 23:13:16,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 23:13:16,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 23:13:16,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 23:13:16,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 23:13:16,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 23:13:16,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 23:13:16,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 23:13:16,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 23:13:16,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 23:13:16,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 23:13:16,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 23:13:16,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 23:13:16,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 23:13:16,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-01-31 23:13:16,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 23:13:16,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 23:13:16,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 23:13:16,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 23:13:16,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 23:13:16,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 23:13:16,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 23:13:16,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 23:13:16,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 23:13:16,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 23:13:16,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:13:16,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 23:13:16,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 23:13:16,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 23:13:16,409 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-01-31 23:13:16,410 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 23:13:16,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 23:13:16,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 23:13:16,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 23:13:16,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 23:13:16,669 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 23:13:16,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2022-01-31 23:13:16,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07088dced/8c2cb0806b3041789d5c512001f167ac/FLAG19adc1c09 [2022-01-31 23:13:17,112 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 23:13:17,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2022-01-31 23:13:17,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07088dced/8c2cb0806b3041789d5c512001f167ac/FLAG19adc1c09 [2022-01-31 23:13:17,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07088dced/8c2cb0806b3041789d5c512001f167ac [2022-01-31 23:13:17,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 23:13:17,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 23:13:17,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 23:13:17,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 23:13:17,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 23:13:17,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd6083f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17, skipping insertion in model container [2022-01-31 23:13:17,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 23:13:17,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 23:13:17,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i[805,818] [2022-01-31 23:13:17,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:13:17,294 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 23:13:17,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i[805,818] [2022-01-31 23:13:17,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 23:13:17,321 INFO L208 MainTranslator]: Completed translation [2022-01-31 23:13:17,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17 WrapperNode [2022-01-31 23:13:17,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 23:13:17,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 23:13:17,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 23:13:17,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 23:13:17,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 23:13:17,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 23:13:17,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 23:13:17,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 23:13:17,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (1/1) ... [2022-01-31 23:13:17,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 23:13:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 23:13:17,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 23:13:17,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 23:13:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 23:13:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 23:13:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 23:13:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 23:13:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2022-01-31 23:13:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 23:13:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_pointer [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure init [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-31 23:13:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 23:13:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 23:13:17,506 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 23:13:17,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 23:13:17,622 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 23:13:17,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 23:13:17,627 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 23:13:17,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:13:17 BoogieIcfgContainer [2022-01-31 23:13:17,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 23:13:17,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 23:13:17,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 23:13:17,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 23:13:17,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:13:17" (1/3) ... [2022-01-31 23:13:17,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376cae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:13:17, skipping insertion in model container [2022-01-31 23:13:17,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:13:17" (2/3) ... [2022-01-31 23:13:17,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376cae06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:13:17, skipping insertion in model container [2022-01-31 23:13:17,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:13:17" (3/3) ... [2022-01-31 23:13:17,636 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2022-01-31 23:13:17,640 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 23:13:17,640 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 23:13:17,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 23:13:17,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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=QVASR [2022-01-31 23:13:17,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 23:13:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 23:13:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:13:17,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:17,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:13:17,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1552187691, now seen corresponding path program 1 times [2022-01-31 23:13:17,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986001594] [2022-01-31 23:13:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:17,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:13:17,790 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:13:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:13:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:13:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:13:17,922 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:13:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986001594] [2022-01-31 23:13:17,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [986001594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:13:17,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:13:17,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 23:13:17,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181933710] [2022-01-31 23:13:17,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:13:17,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 23:13:17,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:13:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 23:13:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 23:13:17,953 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:13:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:13:18,055 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2022-01-31 23:13:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 23:13:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 23:13:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:13:18,064 INFO L225 Difference]: With dead ends: 59 [2022-01-31 23:13:18,064 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 23:13:18,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:13:18,069 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:13:18,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 34 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:13:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 23:13:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-01-31 23:13:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:13:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 23:13:18,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2022-01-31 23:13:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:13:18,100 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 23:13:18,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:13:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 23:13:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 23:13:18,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:18,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:13:18,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 23:13:18,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -22761210, now seen corresponding path program 1 times [2022-01-31 23:13:18,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:18,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861005729] [2022-01-31 23:13:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:18,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 23:13:18,107 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 23:13:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 23:13:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 23:13:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 23:13:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 23:13:18,214 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 23:13:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861005729] [2022-01-31 23:13:18,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [861005729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 23:13:18,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 23:13:18,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 23:13:18,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555732106] [2022-01-31 23:13:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 23:13:18,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 23:13:18,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 23:13:18,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 23:13:18,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 23:13:18,217 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:13:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 23:13:18,370 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2022-01-31 23:13:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 23:13:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 23:13:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 23:13:18,374 INFO L225 Difference]: With dead ends: 51 [2022-01-31 23:13:18,374 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 23:13:18,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-31 23:13:18,380 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 23:13:18,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 24 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 23:13:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 23:13:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-01-31 23:13:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 23:13:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 23:13:18,407 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2022-01-31 23:13:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 23:13:18,410 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 23:13:18,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 23:13:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 23:13:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 23:13:18,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 23:13:18,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 23:13:18,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 23:13:18,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 23:13:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 23:13:18,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1516983208, now seen corresponding path program 1 times [2022-01-31 23:13:18,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 23:13:18,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525836066] [2022-01-31 23:13:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 23:13:18,446 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:493) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:426) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkEquivalence(SmtUtils.java:2374) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.areFormulasEquivalent(SmtUtils.java:2366) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrUtils.checkTermEquiv(QvasrUtils.java:211) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.simplifyRealMultiplication(QvasrAbstractor.java:720) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussPartialPivot(QvasrAbstractor.java:196) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.gaussianSolve(QvasrAbstractor.java:132) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrAbstractor.computeAbstraction(QvasrAbstractor.java:111) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrSummarizer.summarizeLoop(QvasrSummarizer.java:133) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.qvasr.QvasrLoopSummarization.getQvasrAcceleration(QvasrLoopSummarization.java:79) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorQvasr.accelerateLoop(AcceleratorQvasr.java:87) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:210) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 23:13:18,453 INFO L158 Benchmark]: Toolchain (without parser) took 1315.56ms. Allocated memory was 178.3MB in the beginning and 238.0MB in the end (delta: 59.8MB). Free memory was 123.3MB in the beginning and 151.9MB in the end (delta: -28.7MB). Peak memory consumption was 31.0MB. Max. memory is 8.0GB. [2022-01-31 23:13:18,456 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 23:13:18,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.70ms. Allocated memory was 178.3MB in the beginning and 238.0MB in the end (delta: 59.8MB). Free memory was 123.0MB in the beginning and 211.6MB in the end (delta: -88.5MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-01-31 23:13:18,458 INFO L158 Benchmark]: Boogie Preprocessor took 63.19ms. Allocated memory is still 238.0MB. Free memory was 211.6MB in the beginning and 210.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 23:13:18,458 INFO L158 Benchmark]: RCFGBuilder took 242.67ms. Allocated memory is still 238.0MB. Free memory was 209.6MB in the beginning and 197.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 23:13:18,459 INFO L158 Benchmark]: TraceAbstraction took 821.26ms. Allocated memory is still 238.0MB. Free memory was 196.5MB in the beginning and 151.9MB in the end (delta: 44.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2022-01-31 23:13:18,464 INFO L339 ainManager$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 139.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.70ms. Allocated memory was 178.3MB in the beginning and 238.0MB in the end (delta: 59.8MB). Free memory was 123.0MB in the beginning and 211.6MB in the end (delta: -88.5MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 63.19ms. Allocated memory is still 238.0MB. Free memory was 211.6MB in the beginning and 210.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 242.67ms. Allocated memory is still 238.0MB. Free memory was 209.6MB in the beginning and 197.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 821.26ms. Allocated memory is still 238.0MB. Free memory was 196.5MB in the beginning and 151.9MB in the end (delta: 44.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:493) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 23:13:18,494 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...