/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/nla-digbench/geo2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 04:05:15,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 04:05:15,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 04:05:15,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 04:05:15,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 04:05:15,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 04:05:15,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 04:05:15,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 04:05:15,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 04:05:15,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 04:05:15,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 04:05:15,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 04:05:15,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 04:05:15,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 04:05:15,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 04:05:15,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 04:05:15,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-15 04:05:15,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 04:05:15,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 04:05:15,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 04:05:15,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-15 04:05:15,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 04:05:15,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 04:05:15,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 04:05:15,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 04:05:15,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 04:05:15,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 04:05:15,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 04:05:15,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 04:05:15,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 04:05:15,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 04:05:15,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 04:05:15,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:05:15,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 04:05:15,797 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-15 04:05:15,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 04:05:15,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 04:05:15,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 04:05:15,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 04:05:15,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 04:05:15,998 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 04:05:15,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2-ll.c [2022-02-15 04:05:16,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1b86c34/f4023a4234ab4faeb08db556db9e71e8/FLAG66f9cead6 [2022-02-15 04:05:16,389 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 04:05:16,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2-ll.c [2022-02-15 04:05:16,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1b86c34/f4023a4234ab4faeb08db556db9e71e8/FLAG66f9cead6 [2022-02-15 04:05:16,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f1b86c34/f4023a4234ab4faeb08db556db9e71e8 [2022-02-15 04:05:16,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 04:05:16,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 04:05:16,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 04:05:16,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 04:05:16,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 04:05:16,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590a1e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16, skipping insertion in model container [2022-02-15 04:05:16,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 04:05:16,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 04:05:16,534 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/geo2-ll.c[525,538] [2022-02-15 04:05:16,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:05:16,546 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 04:05:16,557 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/geo2-ll.c[525,538] [2022-02-15 04:05:16,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 04:05:16,572 INFO L208 MainTranslator]: Completed translation [2022-02-15 04:05:16,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16 WrapperNode [2022-02-15 04:05:16,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 04:05:16,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 04:05:16,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 04:05:16,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 04:05:16,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 04:05:16,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 04:05:16,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 04:05:16,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 04:05:16,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (1/1) ... [2022-02-15 04:05:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 04:05:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 04:05:16,632 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 04:05:16,634 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 04:05:16,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 04:05:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 04:05:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 04:05:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 04:05:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 04:05:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 04:05:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 04:05:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 04:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 04:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 04:05:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 04:05:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 04:05:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 04:05:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 04:05:16,716 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 04:05:16,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 04:05:16,800 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 04:05:16,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 04:05:16,804 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 04:05:16,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:05:16 BoogieIcfgContainer [2022-02-15 04:05:16,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 04:05:16,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 04:05:16,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 04:05:16,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 04:05:16,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:05:16" (1/3) ... [2022-02-15 04:05:16,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3497475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:05:16, skipping insertion in model container [2022-02-15 04:05:16,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:05:16" (2/3) ... [2022-02-15 04:05:16,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3497475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:05:16, skipping insertion in model container [2022-02-15 04:05:16,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:05:16" (3/3) ... [2022-02-15 04:05:16,824 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll.c [2022-02-15 04:05:16,827 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 04:05:16,827 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 04:05:16,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 04:05:16,859 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 [2022-02-15 04:05:16,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 04:05:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-15 04:05:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 04:05:16,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:05:16,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:05:16,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:05:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:05:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 1 times [2022-02-15 04:05:16,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:05:16,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209503473] [2022-02-15 04:05:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:05:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:05:16,927 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:05:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:05:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 04:05:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 04:05:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 04:05:17,011 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 04:05:17,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209503473] [2022-02-15 04:05:17,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1209503473] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 04:05:17,013 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 04:05:17,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 04:05:17,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388136020] [2022-02-15 04:05:17,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 04:05:17,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 04:05:17,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 04:05:17,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 04:05:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 04:05:17,039 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:05:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 04:05:17,096 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-02-15 04:05:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 04:05:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-15 04:05:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 04:05:17,103 INFO L225 Difference]: With dead ends: 36 [2022-02-15 04:05:17,103 INFO L226 Difference]: Without dead ends: 16 [2022-02-15 04:05:17,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:05:17,107 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 04:05:17,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 04:05:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-15 04:05:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-02-15 04:05:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 04:05:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-02-15 04:05:17,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-02-15 04:05:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 04:05:17,130 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-02-15 04:05:17,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 04:05:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-02-15 04:05:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 04:05:17,131 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 04:05:17,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 04:05:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 04:05:17,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 04:05:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 04:05:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 1 times [2022-02-15 04:05:17,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 04:05:17,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767670774] [2022-02-15 04:05:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 04:05:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 04:05:17,134 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 04:05:17,146 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-02-15 04:05:17,146 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-02-15 04:05:17,150 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 04:05:17,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 04:05:17,154 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-15 04:05:17,155 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 04:05:17,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 04:05:17 BoogieIcfgContainer [2022-02-15 04:05:17,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 04:05:17,165 INFO L158 Benchmark]: Toolchain (without parser) took 758.20ms. Allocated memory was 189.8MB in the beginning and 275.8MB in the end (delta: 86.0MB). Free memory was 136.1MB in the beginning and 211.8MB in the end (delta: -75.6MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-02-15 04:05:17,165 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 04:05:17,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.70ms. Allocated memory was 189.8MB in the beginning and 275.8MB in the end (delta: 86.0MB). Free memory was 135.9MB in the beginning and 248.4MB in the end (delta: -112.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-15 04:05:17,166 INFO L158 Benchmark]: Boogie Preprocessor took 19.70ms. Allocated memory is still 275.8MB. Free memory was 248.4MB in the beginning and 246.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 04:05:17,166 INFO L158 Benchmark]: RCFGBuilder took 212.40ms. Allocated memory is still 275.8MB. Free memory was 246.8MB in the beginning and 237.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-15 04:05:17,166 INFO L158 Benchmark]: TraceAbstraction took 345.37ms. Allocated memory is still 275.8MB. Free memory was 236.3MB in the beginning and 211.8MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-02-15 04:05:17,168 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 189.8MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.70ms. Allocated memory was 189.8MB in the beginning and 275.8MB in the end (delta: 86.0MB). Free memory was 135.9MB in the beginning and 248.4MB in the end (delta: -112.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.70ms. Allocated memory is still 275.8MB. Free memory was 248.4MB in the beginning and 246.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 212.40ms. Allocated memory is still 275.8MB. Free memory was 246.8MB in the beginning and 237.0MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 345.37ms. Allocated memory is still 275.8MB. Free memory was 236.3MB in the beginning and 211.8MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. 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: [L24] int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_int() [L27] k = __VERIFIER_nondet_int() [L29] x = 1 [L30] y = 1 [L31] c = 1 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(1 + x*z - x - z*y == 0) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 20 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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 04:05:17,194 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...