/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:56:14,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:56:14,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:56:14,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 03:56:14,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:56:14,534 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:56:14,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:56:14,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:56:14,536 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:56:14,536 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:56:14,536 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:56:14,537 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:56:14,537 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:56:14,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:56:14,537 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:56:14,538 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:56:14,538 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:56:14,539 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:56:14,539 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:56:14,539 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:56:14,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:56:14,541 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:56:14,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:56:14,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:56:14,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:56:14,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:56:14,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:56:14,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:56:14,542 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:56:14,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:56:14,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:56:14,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:56:14,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:56:14,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:56:14,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:56:14,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:56:14,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:56:14,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:56:14,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:56:14,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:56:14,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:56:14,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:56:14,546 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:56:14,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:56:14,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:56:14,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:56:14,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:56:14,827 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:56:14,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-11-24 03:56:14,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f8863cd/2c52be3681204724a386ec1c7e54ef51/FLAGa6df95fd4 [2019-11-24 03:56:15,392 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:56:15,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-11-24 03:56:15,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f8863cd/2c52be3681204724a386ec1c7e54ef51/FLAGa6df95fd4 [2019-11-24 03:56:15,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f8863cd/2c52be3681204724a386ec1c7e54ef51 [2019-11-24 03:56:15,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:56:15,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:56:15,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:56:15,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:56:15,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:56:15,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:56:15" (1/1) ... [2019-11-24 03:56:15,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332eec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:15, skipping insertion in model container [2019-11-24 03:56:15,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:56:15" (1/1) ... [2019-11-24 03:56:15,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:56:15,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:56:15,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:56:15,967 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:56:15,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:56:16,005 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:56:16,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16 WrapperNode [2019-11-24 03:56:16,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:56:16,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:56:16,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:56:16,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:56:16,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:56:16,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:56:16,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:56:16,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:56:16,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... [2019-11-24 03:56:16,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:56:16,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:56:16,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:56:16,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:56:16,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:56:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:56:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:56:16,681 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:56:16,681 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-11-24 03:56:16,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:56:16 BoogieIcfgContainer [2019-11-24 03:56:16,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:56:16,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:56:16,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:56:16,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:56:16,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:56:15" (1/3) ... [2019-11-24 03:56:16,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dd1431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:56:16, skipping insertion in model container [2019-11-24 03:56:16,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:56:16" (2/3) ... [2019-11-24 03:56:16,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dd1431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:56:16, skipping insertion in model container [2019-11-24 03:56:16,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:56:16" (3/3) ... [2019-11-24 03:56:16,690 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-11-24 03:56:16,700 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:56:16,706 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 03:56:16,717 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 03:56:16,741 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:56:16,741 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:56:16,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:56:16,742 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:56:16,742 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:56:16,742 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:56:16,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:56:16,743 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:56:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-24 03:56:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 03:56:16,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:16,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 03:56:16,762 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash 5646577, now seen corresponding path program 1 times [2019-11-24 03:56:16,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:16,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828501179] [2019-11-24 03:56:16,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:16,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828501179] [2019-11-24 03:56:16,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:56:16,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:56:16,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275158935] [2019-11-24 03:56:16,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 03:56:16,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 03:56:16,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 03:56:16,901 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-24 03:56:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:16,920 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2019-11-24 03:56:16,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 03:56:16,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-11-24 03:56:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:16,932 INFO L225 Difference]: With dead ends: 63 [2019-11-24 03:56:16,933 INFO L226 Difference]: Without dead ends: 30 [2019-11-24 03:56:16,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 03:56:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-24 03:56:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-24 03:56:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-24 03:56:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-24 03:56:16,971 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 4 [2019-11-24 03:56:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:16,972 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-24 03:56:16,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 03:56:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-24 03:56:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 03:56:16,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:16,973 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 03:56:16,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash 171135582, now seen corresponding path program 1 times [2019-11-24 03:56:16,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:16,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978036700] [2019-11-24 03:56:16,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:17,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978036700] [2019-11-24 03:56:17,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:56:17,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:56:17,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108792859] [2019-11-24 03:56:17,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:56:17,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:56:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:17,013 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-11-24 03:56:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:17,071 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2019-11-24 03:56:17,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:56:17,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 03:56:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:17,073 INFO L225 Difference]: With dead ends: 49 [2019-11-24 03:56:17,073 INFO L226 Difference]: Without dead ends: 42 [2019-11-24 03:56:17,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-24 03:56:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-24 03:56:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-24 03:56:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2019-11-24 03:56:17,085 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 5 [2019-11-24 03:56:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:17,086 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2019-11-24 03:56:17,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:56:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2019-11-24 03:56:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 03:56:17,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:17,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:17,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash -192050693, now seen corresponding path program 1 times [2019-11-24 03:56:17,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:17,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151256927] [2019-11-24 03:56:17,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:17,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151256927] [2019-11-24 03:56:17,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:56:17,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:56:17,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395227845] [2019-11-24 03:56:17,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:56:17,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:56:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:17,151 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand 3 states. [2019-11-24 03:56:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:17,197 INFO L93 Difference]: Finished difference Result 102 states and 136 transitions. [2019-11-24 03:56:17,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:56:17,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 03:56:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:17,200 INFO L225 Difference]: With dead ends: 102 [2019-11-24 03:56:17,200 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 03:56:17,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:56:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 03:56:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2019-11-24 03:56:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-24 03:56:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2019-11-24 03:56:17,214 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 13 [2019-11-24 03:56:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:17,214 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2019-11-24 03:56:17,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:56:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2019-11-24 03:56:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 03:56:17,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:17,215 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:17,216 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:17,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:17,216 INFO L82 PathProgramCache]: Analyzing trace with hash -857630274, now seen corresponding path program 1 times [2019-11-24 03:56:17,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:17,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365588597] [2019-11-24 03:56:17,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:17,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365588597] [2019-11-24 03:56:17,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320806410] [2019-11-24 03:56:17,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 03:56:17,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:56:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:56:17,361 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:56:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:56:17,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 03:56:17,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2019-11-24 03:56:17,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935834748] [2019-11-24 03:56:17,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:56:17,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:56:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:56:17,373 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand 3 states. [2019-11-24 03:56:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:17,412 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2019-11-24 03:56:17,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:56:17,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 03:56:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:17,414 INFO L225 Difference]: With dead ends: 85 [2019-11-24 03:56:17,415 INFO L226 Difference]: Without dead ends: 28 [2019-11-24 03:56:17,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:56:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-24 03:56:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-24 03:56:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 03:56:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2019-11-24 03:56:17,427 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 17 [2019-11-24 03:56:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:17,427 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2019-11-24 03:56:17,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:56:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2019-11-24 03:56:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 03:56:17,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:17,431 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:17,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:17,637 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:17,638 INFO L82 PathProgramCache]: Analyzing trace with hash -831864039, now seen corresponding path program 1 times [2019-11-24 03:56:17,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:17,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858623742] [2019-11-24 03:56:17,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:17,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858623742] [2019-11-24 03:56:17,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345745031] [2019-11-24 03:56:17,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:17,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 03:56:17,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:56:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:56:17,812 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:56:17,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:56:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:56:17,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 03:56:17,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 5 [2019-11-24 03:56:17,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481847151] [2019-11-24 03:56:17,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:56:17,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:17,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:56:17,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-24 03:56:17,865 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 3 states. [2019-11-24 03:56:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:17,904 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2019-11-24 03:56:17,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:56:17,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 03:56:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:17,908 INFO L225 Difference]: With dead ends: 71 [2019-11-24 03:56:17,908 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 03:56:17,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-24 03:56:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 03:56:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-24 03:56:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-24 03:56:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2019-11-24 03:56:17,924 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 17 [2019-11-24 03:56:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:17,924 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2019-11-24 03:56:17,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:56:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2019-11-24 03:56:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 03:56:17,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:17,926 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:18,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:18,127 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:18,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash 160250382, now seen corresponding path program 1 times [2019-11-24 03:56:18,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:18,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323169814] [2019-11-24 03:56:18,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:56:18,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323169814] [2019-11-24 03:56:18,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800903906] [2019-11-24 03:56:18,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:18,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 03:56:18,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:56:18,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:56:18,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:56:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 03:56:18,295 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:56:18,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:56:18,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:56:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 03:56:18,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388677980] [2019-11-24 03:56:18,379 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-24 03:56:18,379 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 03:56:18,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 03:56:18,407 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 03:56:18,407 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 03:56:19,163 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 03:56:19,279 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 21 [2019-11-24 03:56:19,411 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2019-11-24 03:56:19,561 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2019-11-24 03:56:19,753 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2019-11-24 03:56:19,990 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2019-11-24 03:56:20,198 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2019-11-24 03:56:20,392 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-11-24 03:56:20,569 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 26 [2019-11-24 03:56:20,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 03:56:20,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [3, 3, 3] total 13 [2019-11-24 03:56:20,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713752960] [2019-11-24 03:56:20,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 03:56:20,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 03:56:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-24 03:56:20,573 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand 10 states. [2019-11-24 03:56:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:20,966 INFO L93 Difference]: Finished difference Result 127 states and 178 transitions. [2019-11-24 03:56:20,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-24 03:56:20,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-24 03:56:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:20,968 INFO L225 Difference]: With dead ends: 127 [2019-11-24 03:56:20,969 INFO L226 Difference]: Without dead ends: 84 [2019-11-24 03:56:20,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-24 03:56:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-11-24 03:56:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2019-11-24 03:56:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-24 03:56:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2019-11-24 03:56:20,983 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 23 [2019-11-24 03:56:20,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:20,984 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2019-11-24 03:56:20,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 03:56:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2019-11-24 03:56:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 03:56:20,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:20,985 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:21,188 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:21,189 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1166583923, now seen corresponding path program 1 times [2019-11-24 03:56:21,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:21,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151609995] [2019-11-24 03:56:21,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-24 03:56:21,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151609995] [2019-11-24 03:56:21,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819367666] [2019-11-24 03:56:21,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:56:21,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-24 03:56:21,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:56:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-24 03:56:21,334 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:56:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 03:56:21,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1322753329] [2019-11-24 03:56:21,410 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-24 03:56:21,410 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 03:56:21,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 03:56:21,411 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 03:56:21,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 03:56:22,624 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 151 [2019-11-24 03:56:22,773 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2019-11-24 03:56:22,955 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 03:56:23,992 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 03:56:23,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 03:56:23,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 7] total 11 [2019-11-24 03:56:23,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908299696] [2019-11-24 03:56:23,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-24 03:56:23,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:56:23,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-24 03:56:23,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-11-24 03:56:23,995 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand 12 states. [2019-11-24 03:56:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:56:24,164 INFO L93 Difference]: Finished difference Result 147 states and 211 transitions. [2019-11-24 03:56:24,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-24 03:56:24,164 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2019-11-24 03:56:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:56:24,166 INFO L225 Difference]: With dead ends: 147 [2019-11-24 03:56:24,166 INFO L226 Difference]: Without dead ends: 104 [2019-11-24 03:56:24,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2019-11-24 03:56:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-24 03:56:24,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 44. [2019-11-24 03:56:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-24 03:56:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2019-11-24 03:56:24,183 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 28 [2019-11-24 03:56:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:56:24,183 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2019-11-24 03:56:24,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-24 03:56:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2019-11-24 03:56:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 03:56:24,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:56:24,188 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:56:24,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:56:24,388 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:56:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:56:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1653530125, now seen corresponding path program 2 times [2019-11-24 03:56:24,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:56:24,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846066524] [2019-11-24 03:56:24,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:56:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 03:56:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 03:56:24,452 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 03:56:24,453 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 03:56:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 03:56:24 BoogieIcfgContainer [2019-11-24 03:56:24,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 03:56:24,509 INFO L168 Benchmark]: Toolchain (without parser) took 8768.07 ms. Allocated memory was 137.9 MB in the beginning and 328.7 MB in the end (delta: 190.8 MB). Free memory was 101.5 MB in the beginning and 224.3 MB in the end (delta: -122.8 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,510 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.59 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 90.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,518 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.80 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.8 MB in the beginning and 181.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,519 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 179.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,519 INFO L168 Benchmark]: RCFGBuilder took 515.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 152.9 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,520 INFO L168 Benchmark]: TraceAbstraction took 7816.89 ms. Allocated memory was 202.4 MB in the beginning and 328.7 MB in the end (delta: 126.4 MB). Free memory was 152.3 MB in the beginning and 224.3 MB in the end (delta: -72.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2019-11-24 03:56:24,535 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.59 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 90.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.80 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.8 MB in the beginning and 181.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 179.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 515.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.2 MB in the beginning and 152.9 MB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7816.89 ms. Allocated memory was 202.4 MB in the beginning and 328.7 MB in the end (delta: 126.4 MB). Free memory was 152.3 MB in the beginning and 224.3 MB in the end (delta: -72.1 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L83] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L52] return 0; [L91] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L48] return 0; [L99] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [ldv_mutex=1, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L34] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 5 error locations. Result: UNSAFE, OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 191 SDtfs, 86 SDslu, 164 SDs, 0 SdLazy, 247 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 180 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=6, 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, 7 MinimizatonAttempts, 71 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 15291 SizeOfPredicates, 43 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 44/129 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 785, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 29, TOOLS_POST_TIME[ms]: 71, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 29, TOOLS_QUANTIFIERELIM_TIME[ms]: 58, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 10, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 44, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 9, DOMAIN_JOIN_TIME[ms]: 495, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 51, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 17, DOMAIN_ISBOTTOM_TIME[ms]: 46, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 239, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 237, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 39, DAG_COMPRESSION_PROCESSED_NODES: 375, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...