/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/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:36:20,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:36:20,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:36:20,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:36:20,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:36:20,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:36:20,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:36:20,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:36:20,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:36:20,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:36:20,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:36:20,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:36:20,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:36:20,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:36:20,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:36:20,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:36:20,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:36:20,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:36:20,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:36:20,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:36:20,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:36:20,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:36:20,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:36:20,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:36:20,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:36:20,902 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 05:36:20,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:36:20,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:36:20,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:36:20,923 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:36:20,923 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:36:20,923 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:36:20,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:36:20,924 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:36:20,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:36:20,924 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:36:20,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:36:20,926 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:36:20,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:36:20,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:36:20,926 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:36:20,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:36:20,927 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:36:20,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:36:20,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:36:20,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:36:20,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:36:20,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:36:20,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:36:20,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:36:20,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:36:20,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:36:20,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:36:20,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:36:20,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:36:20,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:36:20,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:36:20,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:36:20,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:36:20,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:36:20,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:36:20,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:36:20,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:36:20,933 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:36:21,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:36:21,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:36:21,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:36:21,255 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:36:21,255 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:36:21,256 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-11-24 05:36:21,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354d841a8/42ed7c639c1a425e928acd1fb9cc5d94/FLAG4b61d35c3 [2019-11-24 05:36:21,827 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:36:21,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-11-24 05:36:21,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354d841a8/42ed7c639c1a425e928acd1fb9cc5d94/FLAG4b61d35c3 [2019-11-24 05:36:22,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354d841a8/42ed7c639c1a425e928acd1fb9cc5d94 [2019-11-24 05:36:22,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:36:22,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:36:22,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:22,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:36:22,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:36:22,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc52ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22, skipping insertion in model container [2019-11-24 05:36:22,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:36:22,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:36:22,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:22,694 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:36:22,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:22,821 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:36:22,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22 WrapperNode [2019-11-24 05:36:22,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:22,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:22,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:36:22,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:36:22,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:22,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:36:22,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:36:22,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:36:22,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:36:22,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:36:22,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:36:22,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:36:22,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (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 05:36:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:36:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:36:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:36:23,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:36:26,666 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:36:26,666 INFO L284 CfgBuilder]: Removed 292 assume(true) statements. [2019-11-24 05:36:26,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:26 BoogieIcfgContainer [2019-11-24 05:36:26,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:36:26,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:36:26,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:36:26,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:36:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:36:22" (1/3) ... [2019-11-24 05:36:26,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0ac0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:26, skipping insertion in model container [2019-11-24 05:36:26,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22" (2/3) ... [2019-11-24 05:36:26,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0ac0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:26, skipping insertion in model container [2019-11-24 05:36:26,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:26" (3/3) ... [2019-11-24 05:36:26,680 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-11-24 05:36:26,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:36:26,695 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:36:26,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:36:26,723 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:36:26,724 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:36:26,724 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:36:26,724 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:36:26,724 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:36:26,724 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:36:26,725 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:36:26,725 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:36:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:36:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:26,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:26,746 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:26,746 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 778803975, now seen corresponding path program 1 times [2019-11-24 05:36:26,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:26,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103166904] [2019-11-24 05:36:26,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:27,417 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 05:36:27,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103166904] [2019-11-24 05:36:27,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:27,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:36:27,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460542760] [2019-11-24 05:36:27,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:36:27,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:27,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:36:27,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:36:27,446 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:36:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:27,691 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:36:27,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:36:27,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:36:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:27,713 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:36:27,713 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:36:27,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:36:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:36:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:36:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:36:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:36:27,785 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:36:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:27,785 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:36:27,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:36:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:36:27,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:36:27,787 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:27,787 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:27,790 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1656149241, now seen corresponding path program 1 times [2019-11-24 05:36:27,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:27,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210476777] [2019-11-24 05:36:27,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:28,101 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 05:36:28,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210476777] [2019-11-24 05:36:28,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073620912] [2019-11-24 05:36:28,102 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 05:36:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:28,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:36:28,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:36:28,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:36:28,410 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:36:28,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:36:28,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589066944] [2019-11-24 05:36:28,533 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:36:28,534 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:36:28,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:36:28,547 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:36:28,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:36:36,597 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:36:38,198 WARN L192 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:36:38,328 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:36:39,032 WARN L192 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 689 DAG size of output: 589 [2019-11-24 05:36:40,531 WARN L192 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 690 [2019-11-24 05:36:43,577 WARN L192 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 864 DAG size of output: 817 [2019-11-24 05:36:45,249 WARN L192 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 864 DAG size of output: 817 [2019-11-24 05:36:46,474 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 810 DAG size of output: 802 [2019-11-24 05:36:46,479 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:36:51,007 WARN L192 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:37:21,551 WARN L192 SmtUtils]: Spent 30.07 s on a formula simplification. DAG size of input: 801 DAG size of output: 606