/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_spec1_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:18:09,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:18:09,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:18:09,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:18:09,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:18:09,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:18:09,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:18:09,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:18:09,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:18:09,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:18:09,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:18:09,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:18:09,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:18:09,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:18:09,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:18:09,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:18:09,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:18:09,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:18:09,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:18:09,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:18:09,869 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 05:18:09,907 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:18:09,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:18:09,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:18:09,909 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:18:09,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:18:09,909 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:18:09,909 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:18:09,910 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:18:09,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:18:09,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:18:09,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:18:09,910 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:18:09,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:18:09,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:18:09,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:18:09,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:18:09,912 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:18:09,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:18:09,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:18:09,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:18:09,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:18:09,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:18:09,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:18:09,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:18:09,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:18:09,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:18:09,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:18:09,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:18:09,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:18:09,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:18:09,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:18:09,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:18:09,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:18:10,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:18:10,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:18:10,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:18:10,222 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:18:10,222 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:18:10,223 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-11-24 05:18:10,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55377402b/99938e14c2534e2da274aad322d41f72/FLAG34d0fd8d3 [2019-11-24 05:18:10,799 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:18:10,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-11-24 05:18:10,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55377402b/99938e14c2534e2da274aad322d41f72/FLAG34d0fd8d3 [2019-11-24 05:18:11,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55377402b/99938e14c2534e2da274aad322d41f72 [2019-11-24 05:18:11,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:18:11,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:18:11,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:18:11,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:18:11,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ab2c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11, skipping insertion in model container [2019-11-24 05:18:11,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:18:11,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:18:11,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:11,651 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:18:11,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:11,814 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:18:11,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11 WrapperNode [2019-11-24 05:18:11,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:11,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:11,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:18:11,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:18:11,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:11,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:18:11,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:18:11,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:18:11,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (1/1) ... [2019-11-24 05:18:11,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:18:11,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:18:11,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:18:11,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:18:11,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (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 05:18:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:18:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:18:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:18:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:18:14,430 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:18:14,431 INFO L284 CfgBuilder]: Removed 198 assume(true) statements. [2019-11-24 05:18:14,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:14 BoogieIcfgContainer [2019-11-24 05:18:14,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:18:14,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:18:14,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:18:14,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:18:14,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:18:11" (1/3) ... [2019-11-24 05:18:14,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0ce04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:14, skipping insertion in model container [2019-11-24 05:18:14,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:11" (2/3) ... [2019-11-24 05:18:14,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af0ce04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:14, skipping insertion in model container [2019-11-24 05:18:14,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:14" (3/3) ... [2019-11-24 05:18:14,442 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2019-11-24 05:18:14,453 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:18:14,461 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:18:14,473 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:18:14,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:18:14,503 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:18:14,503 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:18:14,503 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:18:14,504 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:18:14,504 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:18:14,504 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:18:14,504 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:18:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:18:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:14,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:14,537 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:14,538 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:14,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:14,546 INFO L82 PathProgramCache]: Analyzing trace with hash -691001087, now seen corresponding path program 1 times [2019-11-24 05:18:14,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:14,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292213258] [2019-11-24 05:18:14,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:14,877 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 05:18:14,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292213258] [2019-11-24 05:18:14,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:14,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:18:14,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842170173] [2019-11-24 05:18:14,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:18:14,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:14,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:18:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:14,902 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-24 05:18:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:14,923 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-24 05:18:14,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:18:14,924 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:18:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:14,934 INFO L225 Difference]: With dead ends: 44 [2019-11-24 05:18:14,934 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 05:18:14,938 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 05:18:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 05:18:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-24 05:18:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 05:18:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-24 05:18:14,972 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2019-11-24 05:18:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:14,973 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-24 05:18:14,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:18:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-24 05:18:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:14,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:14,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:14,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1237019179, now seen corresponding path program 1 times [2019-11-24 05:18:14,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:14,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125148760] [2019-11-24 05:18:14,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:15,356 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 05:18:15,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125148760] [2019-11-24 05:18:15,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:15,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:18:15,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504340362] [2019-11-24 05:18:15,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:18:15,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:15,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:18:15,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:18:15,362 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-24 05:18:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:15,533 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-24 05:18:15,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:18:15,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:18:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:15,535 INFO L225 Difference]: With dead ends: 45 [2019-11-24 05:18:15,535 INFO L226 Difference]: Without dead ends: 41 [2019-11-24 05:18:15,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:18:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-24 05:18:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-11-24 05:18:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:18:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-24 05:18:15,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 7 [2019-11-24 05:18:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:15,546 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-24 05:18:15,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:18:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-24 05:18:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:18:15,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:15,548 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:15,548 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:15,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1398613155, now seen corresponding path program 1 times [2019-11-24 05:18:15,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:15,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071315043] [2019-11-24 05:18:15,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:15,887 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 05:18:15,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071315043] [2019-11-24 05:18:15,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008286038] [2019-11-24 05:18:15,889 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 05:18:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:16,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-24 05:18:16,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:18:16,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,112 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,461 WARN L192 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-24 05:18:16,638 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:18:16,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,757 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,851 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 05:18:16,852 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:18:16,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,923 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:16,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:17,156 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 05:18:17,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1024827956] [2019-11-24 05:18:17,199 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:18:17,199 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:18:17,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:18:17,212 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:18:17,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:18:26,914 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:18:28,466 WARN L192 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:18:28,642 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:18:29,365 WARN L192 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 599 [2019-11-24 05:18:30,545 WARN L192 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-24 05:18:39,495 WARN L192 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 1216 DAG size of output: 1055 [2019-11-24 05:18:50,804 WARN L192 SmtUtils]: Spent 5.89 s on a formula simplification. DAG size of input: 1036 DAG size of output: 1029