/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_spec2_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:20:32,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:20:32,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:20:32,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:20:32,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:20:32,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:20:32,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:20:32,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:20:32,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:20:32,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:20:32,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:20:32,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:20:32,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:20:32,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:20:32,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:20:32,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:20:32,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:20:32,885 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 05:20:32,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:20:32,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:20:32,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:20:32,913 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:20:32,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:20:32,914 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:20:32,914 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:20:32,914 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:20:32,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:20:32,914 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:20:32,915 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:20:32,915 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:20:32,915 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:20:32,915 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:20:32,915 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:20:32,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:20:32,916 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:20:32,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:20:32,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:20:32,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:20:32,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:20:32,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:20:32,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:20:32,918 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:20:32,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:20:32,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:20:32,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:20:32,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:20:32,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:20:32,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:20:32,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:20:32,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:20:32,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:20:32,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:20:32,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:20:32,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:20:32,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:20:32,920 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:20:33,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:20:33,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:20:33,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:20:33,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:20:33,218 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:20:33,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product24.cil.c [2019-11-24 05:20:33,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fbcfd093/c00a50c43f4243d899be0acf478bbe9b/FLAGa8f5269b1 [2019-11-24 05:20:33,805 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:20:33,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product24.cil.c [2019-11-24 05:20:33,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fbcfd093/c00a50c43f4243d899be0acf478bbe9b/FLAGa8f5269b1 [2019-11-24 05:20:34,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fbcfd093/c00a50c43f4243d899be0acf478bbe9b [2019-11-24 05:20:34,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:20:34,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:20:34,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:20:34,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:20:34,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:20:34,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceb8032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34, skipping insertion in model container [2019-11-24 05:20:34,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:20:34,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:20:34,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:20:34,695 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:20:34,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:20:34,825 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:20:34,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34 WrapperNode [2019-11-24 05:20:34,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:20:34,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:20:34,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:20:34,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:20:34,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:20:34,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:20:34,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:20:34,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:20:34,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (1/1) ... [2019-11-24 05:20:34,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:20:34,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:20:34,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:20:34,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:20:34,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (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 05:20:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:20:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:20:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:20:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:20:36,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:20:36,999 INFO L284 CfgBuilder]: Removed 164 assume(true) statements. [2019-11-24 05:20:37,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:20:37 BoogieIcfgContainer [2019-11-24 05:20:37,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:20:37,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:20:37,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:20:37,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:20:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:20:34" (1/3) ... [2019-11-24 05:20:37,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5413c2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:20:37, skipping insertion in model container [2019-11-24 05:20:37,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:20:34" (2/3) ... [2019-11-24 05:20:37,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5413c2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:20:37, skipping insertion in model container [2019-11-24 05:20:37,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:20:37" (3/3) ... [2019-11-24 05:20:37,041 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product24.cil.c [2019-11-24 05:20:37,051 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:20:37,059 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:20:37,070 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:20:37,094 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:20:37,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:20:37,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:20:37,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:20:37,095 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:20:37,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:20:37,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:20:37,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:20:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:20:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:20:37,119 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:37,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:20:37,120 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash -70764563, now seen corresponding path program 1 times [2019-11-24 05:20:37,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:37,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158796159] [2019-11-24 05:20:37,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:37,520 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 05:20:37,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158796159] [2019-11-24 05:20:37,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:20:37,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:20:37,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923190521] [2019-11-24 05:20:37,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:20:37,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:20:37,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:20:37,546 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:20:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:37,632 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:20:37,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:20:37,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:20:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:37,646 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:20:37,647 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:20:37,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 05:20:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:20:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:20:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:20:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:20:37,692 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:20:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:37,693 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:20:37,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:20:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:20:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:20:37,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:37,694 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:20:37,695 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:37,695 INFO L82 PathProgramCache]: Analyzing trace with hash -674156805, now seen corresponding path program 1 times [2019-11-24 05:20:37,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:37,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670365871] [2019-11-24 05:20:37,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 05:20:38,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670365871] [2019-11-24 05:20:38,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595082969] [2019-11-24 05:20:38,060 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 05:20:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:38,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-24 05:20:38,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:20:38,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:20:38,462 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:20:38,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,549 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,579 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,616 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,652 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:20:38,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 05:20:38,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 9] total 14 [2019-11-24 05:20:38,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633714862] [2019-11-24 05:20:38,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:20:38,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:20:38,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:20:38,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-11-24 05:20:38,800 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:20:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:20:39,153 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2019-11-24 05:20:39,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:20:39,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:20:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:20:39,155 INFO L225 Difference]: With dead ends: 107 [2019-11-24 05:20:39,155 INFO L226 Difference]: Without dead ends: 48 [2019-11-24 05:20:39,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-11-24 05:20:39,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-24 05:20:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2019-11-24 05:20:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-24 05:20:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2019-11-24 05:20:39,165 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 13 [2019-11-24 05:20:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:20:39,165 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2019-11-24 05:20:39,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:20:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2019-11-24 05:20:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:20:39,167 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:20:39,167 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:20:39,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:20:39,368 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:20:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:20:39,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1695211398, now seen corresponding path program 1 times [2019-11-24 05:20:39,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:20:39,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698802278] [2019-11-24 05:20:39,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:20:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:20:39,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698802278] [2019-11-24 05:20:39,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542149317] [2019-11-24 05:20:39,778 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 05:20:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:20:39,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-24 05:20:39,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:20:39,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:39,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,326 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2019-11-24 05:20:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:20:40,394 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:20:40,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:20:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:20:40,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1460163913] [2019-11-24 05:20:40,729 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:20:40,729 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:20:40,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:20:40,742 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:20:40,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:20:51,000 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:20:52,879 WARN L192 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:20:53,055 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:20:53,791 WARN L192 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 560 DAG size of output: 550 [2019-11-24 05:20:54,485 WARN L192 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 652 [2019-11-24 05:21:03,830 WARN L192 SmtUtils]: Spent 6.63 s on a formula simplification. DAG size of input: 1007 DAG size of output: 804 [2019-11-24 05:21:08,839 WARN L192 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 785 DAG size of output: 767 [2019-11-24 05:21:51,626 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:21:56,029 WARN L192 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 486 DAG size of output: 431