/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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:36:09,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:36:09,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:36:09,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:36:09,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:36:09,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:36:09,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:36:09,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:36:09,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:36:09,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:36:09,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:36:09,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:36:09,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:36:09,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:36:09,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:36:09,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:36:09,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:36:09,910 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 05:36:09,942 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:36:09,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:36:09,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:36:09,943 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:36:09,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:36:09,944 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:36:09,944 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:36:09,944 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:36:09,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:36:09,944 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:36:09,945 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:36:09,946 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:36:09,946 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:36:09,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:36:09,947 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:36:09,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:36:09,948 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:36:09,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:36:09,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:36:09,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:36:09,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:36:09,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:36:09,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:36:09,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:36:09,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:36:09,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:36:09,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:36:09,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:36:09,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:36:09,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:36:09,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:36:09,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:36:09,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:36:10,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:36:10,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:36:10,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:36:10,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:36:10,279 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:36:10,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-11-24 05:36:10,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc905ab84/be65973c2702450f82c29b2acb3e7aad/FLAGfcb11f362 [2019-11-24 05:36:10,855 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:36:10,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product51.cil.c [2019-11-24 05:36:10,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc905ab84/be65973c2702450f82c29b2acb3e7aad/FLAGfcb11f362 [2019-11-24 05:36:11,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc905ab84/be65973c2702450f82c29b2acb3e7aad [2019-11-24 05:36:11,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:36:11,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:36:11,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:11,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:36:11,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:36:11,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2198dde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11, skipping insertion in model container [2019-11-24 05:36:11,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:36:11,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:36:11,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:11,745 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:36:11,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:11,860 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:36:11,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11 WrapperNode [2019-11-24 05:36:11,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:11,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:11,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:36:11,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:36:11,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:11,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:36:11,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:36:11,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:36:11,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:11,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (1/1) ... [2019-11-24 05:36:12,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:36:12,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:36:12,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:36:12,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:36:12,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (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 05:36:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:36:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:36:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:36:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:36:14,586 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:36:14,586 INFO L284 CfgBuilder]: Removed 174 assume(true) statements. [2019-11-24 05:36:14,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:14 BoogieIcfgContainer [2019-11-24 05:36:14,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:36:14,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:36:14,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:36:14,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:36:14,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:36:11" (1/3) ... [2019-11-24 05:36:14,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd675c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:14, skipping insertion in model container [2019-11-24 05:36:14,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:11" (2/3) ... [2019-11-24 05:36:14,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd675c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:14, skipping insertion in model container [2019-11-24 05:36:14,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:14" (3/3) ... [2019-11-24 05:36:14,597 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product51.cil.c [2019-11-24 05:36:14,607 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:36:14,618 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:36:14,629 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:36:14,666 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:36:14,666 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:36:14,666 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:36:14,666 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:36:14,667 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:36:14,667 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:36:14,667 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:36:14,667 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:36:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:36:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:14,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:14,696 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:14,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1684559380, now seen corresponding path program 1 times [2019-11-24 05:36:14,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:14,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808602997] [2019-11-24 05:36:14,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:15,038 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 05:36:15,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808602997] [2019-11-24 05:36:15,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:15,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:36:15,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399039536] [2019-11-24 05:36:15,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:36:15,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:15,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:36:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:36:15,058 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:36:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:15,078 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:36:15,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:36:15,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:36:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:15,089 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:36:15,089 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:36:15,093 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 05:36:15,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:36:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:36:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:36:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:36:15,131 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:36:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:15,132 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:36:15,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:36:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:36:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:15,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:15,133 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:15,133 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:15,134 INFO L82 PathProgramCache]: Analyzing trace with hash -356951989, now seen corresponding path program 1 times [2019-11-24 05:36:15,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:15,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423937142] [2019-11-24 05:36:15,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:15,438 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 05:36:15,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423937142] [2019-11-24 05:36:15,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:15,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-24 05:36:15,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712184234] [2019-11-24 05:36:15,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:36:15,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:15,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:36:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:36:15,443 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 7 states. [2019-11-24 05:36:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:15,745 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2019-11-24 05:36:15,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:36:15,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-24 05:36:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:15,747 INFO L225 Difference]: With dead ends: 57 [2019-11-24 05:36:15,747 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:36:15,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:36:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:36:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2019-11-24 05:36:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:36:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:36:15,758 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:36:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:15,758 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:36:15,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:36:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:36:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:36:15,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:15,760 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:15,760 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1285281625, now seen corresponding path program 1 times [2019-11-24 05:36:15,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:15,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167938667] [2019-11-24 05:36:15,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:15,965 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 05:36:15,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167938667] [2019-11-24 05:36:15,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521376379] [2019-11-24 05:36:15,966 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 05:36:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:16,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:36:16,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:36:16,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,240 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 05:36:16,240 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:36:16,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:16,273 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 05:36:16,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [51704936] [2019-11-24 05:36:16,298 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:36:16,299 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:36:16,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:36:16,312 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:36:16,312 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:36:25,881 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:36:27,635 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:36:27,779 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:36:28,616 WARN L192 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 643 DAG size of output: 594 [2019-11-24 05:36:30,344 WARN L192 SmtUtils]: Spent 669.00 ms on a formula simplification that was a NOOP. DAG size: 694 [2019-11-24 05:36:34,965 WARN L192 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 972 DAG size of output: 896 [2019-11-24 05:36:41,690 WARN L192 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 893 DAG size of output: 888 [2019-11-24 05:37:01,595 WARN L192 SmtUtils]: Spent 14.15 s on a formula simplification. DAG size of input: 1825 DAG size of output: 1233 [2019-11-24 05:37:31,085 WARN L192 SmtUtils]: Spent 12.80 s on a formula simplification. DAG size of input: 1174 DAG size of output: 1164