/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/egcd-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 02:23:45,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 02:23:45,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 02:23:45,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 02:23:45,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 02:23:45,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 02:23:45,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 02:23:45,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 02:23:45,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 02:23:45,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 02:23:45,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 02:23:45,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 02:23:45,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 02:23:45,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 02:23:45,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 02:23:45,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 02:23:45,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 02:23:45,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 02:23:45,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 02:23:45,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 02:23:45,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 02:23:45,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 02:23:45,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 02:23:45,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 02:23:45,632 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 02:23:45,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 02:23:45,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 02:23:45,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 02:23:45,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 02:23:45,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 02:23:45,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:23:45,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 02:23:45,634 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 02:23:45,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 02:23:45,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 02:23:45,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 02:23:45,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 02:23:45,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 02:23:45,861 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 02:23:45,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/egcd-ll.c [2022-02-15 02:23:45,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2680c0d7/2dd4edbdac4945ff8d00b1c61ca19fd1/FLAGe3db4d7db [2022-02-15 02:23:46,285 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 02:23:46,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd-ll.c [2022-02-15 02:23:46,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2680c0d7/2dd4edbdac4945ff8d00b1c61ca19fd1/FLAGe3db4d7db [2022-02-15 02:23:46,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2680c0d7/2dd4edbdac4945ff8d00b1c61ca19fd1 [2022-02-15 02:23:46,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 02:23:46,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 02:23:46,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 02:23:46,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 02:23:46,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 02:23:46,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e189514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46, skipping insertion in model container [2022-02-15 02:23:46,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 02:23:46,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 02:23:46,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd-ll.c[489,502] [2022-02-15 02:23:46,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:23:46,450 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 02:23:46,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/egcd-ll.c[489,502] [2022-02-15 02:23:46,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 02:23:46,474 INFO L208 MainTranslator]: Completed translation [2022-02-15 02:23:46,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46 WrapperNode [2022-02-15 02:23:46,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 02:23:46,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 02:23:46,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 02:23:46,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 02:23:46,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 02:23:46,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 02:23:46,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 02:23:46,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 02:23:46,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (1/1) ... [2022-02-15 02:23:46,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 02:23:46,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 02:23:46,550 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) [2022-02-15 02:23:46,570 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 [2022-02-15 02:23:46,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 02:23:46,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 02:23:46,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 02:23:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 02:23:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 02:23:46,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 02:23:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 02:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 02:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 02:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 02:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 02:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 02:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 02:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 02:23:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 02:23:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 02:23:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 02:23:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 02:23:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 02:23:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 02:23:46,648 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 02:23:46,650 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 02:23:46,753 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 02:23:46,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 02:23:46,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 02:23:46,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:23:46 BoogieIcfgContainer [2022-02-15 02:23:46,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 02:23:46,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 02:23:46,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 02:23:46,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 02:23:46,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:23:46" (1/3) ... [2022-02-15 02:23:46,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6afd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:23:46, skipping insertion in model container [2022-02-15 02:23:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:23:46" (2/3) ... [2022-02-15 02:23:46,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e6afd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:23:46, skipping insertion in model container [2022-02-15 02:23:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:23:46" (3/3) ... [2022-02-15 02:23:46,765 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2022-02-15 02:23:46,769 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 02:23:46,769 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 02:23:46,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 02:23:46,816 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=JORDAN [2022-02-15 02:23:46,816 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 02:23:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-15 02:23:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 02:23:46,833 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:46,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:46,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:46,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2012836591, now seen corresponding path program 1 times [2022-02-15 02:23:46,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:46,847 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341949620] [2022-02-15 02:23:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:46,896 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 02:23:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-15 02:23:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-15 02:23:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 02:23:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 02:23:47,026 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 02:23:47,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341949620] [2022-02-15 02:23:47,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1341949620] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 02:23:47,028 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 02:23:47,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 02:23:47,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585439684] [2022-02-15 02:23:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 02:23:47,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 02:23:47,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 02:23:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 02:23:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 02:23:47,056 INFO L87 Difference]: Start difference. First operand has 34 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-15 02:23:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 02:23:47,152 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2022-02-15 02:23:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 02:23:47,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-15 02:23:47,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 02:23:47,159 INFO L225 Difference]: With dead ends: 61 [2022-02-15 02:23:47,159 INFO L226 Difference]: Without dead ends: 29 [2022-02-15 02:23:47,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 02:23:47,164 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 02:23:47,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 02:23:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-02-15 02:23:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-02-15 02:23:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-15 02:23:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-02-15 02:23:47,192 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 22 [2022-02-15 02:23:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 02:23:47,192 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-02-15 02:23:47,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-15 02:23:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-02-15 02:23:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-15 02:23:47,194 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 02:23:47,194 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 02:23:47,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 02:23:47,194 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 02:23:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 02:23:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1952740121, now seen corresponding path program 1 times [2022-02-15 02:23:47,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 02:23:47,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902215040] [2022-02-15 02:23:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 02:23:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 02:23:47,197 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 02:23:47,218 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-15 02:23:47,218 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-15 02:23:47,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 02:23:47,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 02:23:47,227 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-15 02:23:47,229 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 02:23:47,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 02:23:47 BoogieIcfgContainer [2022-02-15 02:23:47,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 02:23:47,238 INFO L158 Benchmark]: Toolchain (without parser) took 934.71ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 120.6MB in the beginning and 156.7MB in the end (delta: -36.1MB). Peak memory consumption was 11.1MB. Max. memory is 8.0GB. [2022-02-15 02:23:47,239 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 02:23:47,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.62ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 120.4MB in the beginning and 199.1MB in the end (delta: -78.8MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-02-15 02:23:47,240 INFO L158 Benchmark]: Boogie Preprocessor took 30.35ms. Allocated memory is still 224.4MB. Free memory was 199.1MB in the beginning and 197.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 02:23:47,240 INFO L158 Benchmark]: RCFGBuilder took 253.00ms. Allocated memory is still 224.4MB. Free memory was 197.6MB in the beginning and 186.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-15 02:23:47,241 INFO L158 Benchmark]: TraceAbstraction took 477.13ms. Allocated memory is still 224.4MB. Free memory was 186.0MB in the beginning and 156.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-02-15 02:23:47,242 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 176.2MB. Free memory is still 136.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.62ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 120.4MB in the beginning and 199.1MB in the end (delta: -78.8MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.35ms. Allocated memory is still 224.4MB. Free memory was 199.1MB in the beginning and 197.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 253.00ms. Allocated memory is still 224.4MB. Free memory was 197.6MB in the beginning and 186.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 477.13ms. Allocated memory is still 224.4MB. Free memory was 186.0MB in the beginning and 156.7MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L22] y = __VERIFIER_nondet_int() [L23] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L23] RET assume_abort_if_not(x >= 1) [L24] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y >= 1) [L26] a = x [L27] b = y [L28] p = 1 [L29] q = 0 [L30] r = 0 [L31] s = 1 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(1 == p * s - r * q) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 33 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-15 02:23:47,269 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...