/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-scaling/cohendiv-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:50:16,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:50:16,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:50:16,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:50:16,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 21:50:16,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 21:50:16,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 21:50:16,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 21:50:16,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 21:50:16,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 21:50:16,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 21:50:16,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 21:50:16,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 21:50:16,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 21:50:16,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 21:50:16,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 21:50:16,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 21:50:16,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:50:16,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:50:16,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:50:16,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:50:16,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:50:16,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:50:16,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:50:16,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:50:16,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:50:16,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:50:16,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:50:16,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:50:16,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:50:16,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:50:16,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:50:16,769 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:50:16,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:50:16,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:50:16,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:50:16,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:50:16,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:50:16,977 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:50:16,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2022-01-31 21:50:17,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8def7dbe9/f802e74264944618a3a79a78abb5e352/FLAG3cb45a94f [2022-01-31 21:50:17,371 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:50:17,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2022-01-31 21:50:17,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8def7dbe9/f802e74264944618a3a79a78abb5e352/FLAG3cb45a94f [2022-01-31 21:50:17,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8def7dbe9/f802e74264944618a3a79a78abb5e352 [2022-01-31 21:50:17,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:50:17,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:50:17,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:50:17,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:50:17,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:50:17,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f44eb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17, skipping insertion in model container [2022-01-31 21:50:17,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:50:17,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:50:17,511 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-scaling/cohendiv-ll_valuebound20.c[576,589] [2022-01-31 21:50:17,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:50:17,541 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:50:17,561 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-scaling/cohendiv-ll_valuebound20.c[576,589] [2022-01-31 21:50:17,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:50:17,574 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:50:17,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17 WrapperNode [2022-01-31 21:50:17,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:50:17,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:50:17,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:50:17,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:50:17,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:50:17,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:50:17,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:50:17,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:50:17,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (1/1) ... [2022-01-31 21:50:17,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:50:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:50:17,631 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 21:50:17,641 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 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:50:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:50:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:50:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:50:17,698 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:50:17,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:50:17,775 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:50:17,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:50:17,779 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 21:50:17,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:50:17 BoogieIcfgContainer [2022-01-31 21:50:17,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:50:17,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:50:17,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:50:17,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:50:17,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:50:17" (1/3) ... [2022-01-31 21:50:17,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b7de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:50:17, skipping insertion in model container [2022-01-31 21:50:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:50:17" (2/3) ... [2022-01-31 21:50:17,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b7de08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:50:17, skipping insertion in model container [2022-01-31 21:50:17,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:50:17" (3/3) ... [2022-01-31 21:50:17,795 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2022-01-31 21:50:17,798 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:50:17,798 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:50:17,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:50:17,829 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 [2022-01-31 21:50:17,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:50:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 21:50:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 21:50:17,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:17,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:17,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1768835633, now seen corresponding path program 1 times [2022-01-31 21:50:17,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788216338] [2022-01-31 21:50:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:17,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:17,890 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:50:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:50:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 21:50:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 21:50:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 21:50:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:50:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 21:50:18,053 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:50:18,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788216338] [2022-01-31 21:50:18,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [788216338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:50:18,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:50:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:50:18,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701887253] [2022-01-31 21:50:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:50:18,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:50:18,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:50:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:50:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:50:18,084 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 21:50:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:50:18,179 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions. [2022-01-31 21:50:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:50:18,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-01-31 21:50:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:50:18,192 INFO L225 Difference]: With dead ends: 71 [2022-01-31 21:50:18,192 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 21:50:18,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:50:18,196 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:50:18,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:50:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 21:50:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-01-31 21:50:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-01-31 21:50:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-01-31 21:50:18,248 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 28 [2022-01-31 21:50:18,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:50:18,248 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-01-31 21:50:18,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 21:50:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-01-31 21:50:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 21:50:18,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:50:18,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:50:18,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:50:18,252 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:50:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:50:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1378913883, now seen corresponding path program 1 times [2022-01-31 21:50:18,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:50:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928686262] [2022-01-31 21:50:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:50:18,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:50:18,264 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:50:18,291 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 21:50:18,291 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 21:50:18,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:50:18,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:50:18,298 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 21:50:18,300 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:50:18,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:50:18 BoogieIcfgContainer [2022-01-31 21:50:18,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:50:18,307 INFO L158 Benchmark]: Toolchain (without parser) took 910.75ms. Allocated memory was 191.9MB in the beginning and 257.9MB in the end (delta: 66.1MB). Free memory was 137.2MB in the beginning and 185.0MB in the end (delta: -47.8MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2022-01-31 21:50:18,307 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:50:18,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.15ms. Allocated memory was 191.9MB in the beginning and 257.9MB in the end (delta: 66.1MB). Free memory was 137.0MB in the beginning and 228.5MB in the end (delta: -91.6MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-31 21:50:18,308 INFO L158 Benchmark]: Boogie Preprocessor took 25.74ms. Allocated memory is still 257.9MB. Free memory was 228.5MB in the beginning and 226.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 21:50:18,308 INFO L158 Benchmark]: RCFGBuilder took 179.33ms. Allocated memory is still 257.9MB. Free memory was 226.9MB in the beginning and 215.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 21:50:18,309 INFO L158 Benchmark]: TraceAbstraction took 525.38ms. Allocated memory is still 257.9MB. Free memory was 214.9MB in the beginning and 185.0MB in the end (delta: 29.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-01-31 21:50:18,311 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 191.9MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 175.15ms. Allocated memory was 191.9MB in the beginning and 257.9MB in the end (delta: 66.1MB). Free memory was 137.0MB in the beginning and 228.5MB in the end (delta: -91.6MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.74ms. Allocated memory is still 257.9MB. Free memory was 228.5MB in the beginning and 226.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 179.33ms. Allocated memory is still 257.9MB. Free memory was 226.9MB in the beginning and 215.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 525.38ms. Allocated memory is still 257.9MB. Free memory was 214.9MB in the beginning and 185.0MB in the end (delta: 29.9MB). Peak memory consumption was 30.4MB. 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: 17]: 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: [L23] int x, y; [L24] long long q, r, a, b; [L26] x = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(x>=0 && x<=20) [L12] COND FALSE !(!cond) [L27] RET assume_abort_if_not(x>=0 && x<=20) [L28] y = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(y>=0 && y<=20) [L12] COND FALSE !(!cond) [L29] RET assume_abort_if_not(y>=0 && y<=20) [L31] CALL assume_abort_if_not(y >= 1) [L12] COND FALSE !(!cond) [L31] RET assume_abort_if_not(y >= 1) [L33] q = 0 [L34] r = x [L35] a = 0 [L36] b = 0 [L38] COND TRUE 1 [L39] CALL __VERIFIER_assert(b == y*a) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 38 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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 [2022-01-31 21:50:18,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...