/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/elevator_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:42:23,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:42:23,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:42:23,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:42:23,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:42:23,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:42:23,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:42:23,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:42:23,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:42:23,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:42:23,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:42:23,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:42:23,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:42:23,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:42:23,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:42:23,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:42:23,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:42:23,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:42:23,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:42:23,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:42:23,990 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 04:42:24,024 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:42:24,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:42:24,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:42:24,030 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:42:24,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:42:24,030 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:42:24,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:42:24,031 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:42:24,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:42:24,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:42:24,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:42:24,032 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:42:24,032 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:42:24,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:42:24,032 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:42:24,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:42:24,033 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:42:24,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:42:24,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:42:24,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:42:24,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:42:24,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:42:24,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:42:24,035 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:42:24,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:42:24,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:42:24,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:42:24,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:42:24,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:42:24,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:42:24,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:42:24,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:42:24,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:42:24,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:42:24,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:42:24,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:42:24,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:42:24,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:42:24,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:42:24,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:42:24,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:42:24,365 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:42:24,365 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:42:24,366 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-11-24 04:42:24,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add0ddb49/d6dbfaeda0864f0c8851708a06cb3cc7/FLAG7e3a6610f [2019-11-24 04:42:25,113 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:42:25,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-11-24 04:42:25,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add0ddb49/d6dbfaeda0864f0c8851708a06cb3cc7/FLAG7e3a6610f [2019-11-24 04:42:25,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add0ddb49/d6dbfaeda0864f0c8851708a06cb3cc7 [2019-11-24 04:42:25,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:42:25,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:42:25,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:42:25,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:42:25,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:42:25,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:42:25" (1/1) ... [2019-11-24 04:42:25,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ef1c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:25, skipping insertion in model container [2019-11-24 04:42:25,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:42:25" (1/1) ... [2019-11-24 04:42:25,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:42:25,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:42:26,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:42:26,158 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:42:26,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:42:26,348 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:42:26,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26 WrapperNode [2019-11-24 04:42:26,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:42:26,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:42:26,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:42:26,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:42:26,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:42:26,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:42:26,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:42:26,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:42:26,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:26,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:27,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (1/1) ... [2019-11-24 04:42:27,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:42:27,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:42:27,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:42:27,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:42:27,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (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 04:42:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:42:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:42:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:42:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:43:23,463 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:43:23,464 INFO L284 CfgBuilder]: Removed 1245 assume(true) statements. [2019-11-24 04:43:23,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:43:23 BoogieIcfgContainer [2019-11-24 04:43:23,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:43:23,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:43:23,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:43:23,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:43:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:42:25" (1/3) ... [2019-11-24 04:43:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75918fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:43:23, skipping insertion in model container [2019-11-24 04:43:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:42:26" (2/3) ... [2019-11-24 04:43:23,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75918fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:43:23, skipping insertion in model container [2019-11-24 04:43:23,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:43:23" (3/3) ... [2019-11-24 04:43:23,474 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-11-24 04:43:23,484 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:43:23,493 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:43:23,505 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:43:23,541 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:43:23,541 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:43:23,541 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:43:23,541 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:43:23,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:43:23,542 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:43:23,542 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:43:23,542 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:43:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states. [2019-11-24 04:43:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:43:23,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:23,593 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:23,593 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 221860935, now seen corresponding path program 1 times [2019-11-24 04:43:23,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:23,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734560914] [2019-11-24 04:43:23,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:24,017 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 04:43:24,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734560914] [2019-11-24 04:43:24,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:24,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:43:24,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897031610] [2019-11-24 04:43:24,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:43:24,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:43:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:43:24,047 INFO L87 Difference]: Start difference. First operand 1449 states. Second operand 2 states. [2019-11-24 04:43:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:24,169 INFO L93 Difference]: Finished difference Result 1466 states and 2819 transitions. [2019-11-24 04:43:24,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:43:24,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-24 04:43:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:24,206 INFO L225 Difference]: With dead ends: 1466 [2019-11-24 04:43:24,207 INFO L226 Difference]: Without dead ends: 1447 [2019-11-24 04:43:24,213 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 04:43:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2019-11-24 04:43:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1447. [2019-11-24 04:43:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2019-11-24 04:43:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2789 transitions. [2019-11-24 04:43:24,347 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2789 transitions. Word has length 12 [2019-11-24 04:43:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:24,348 INFO L462 AbstractCegarLoop]: Abstraction has 1447 states and 2789 transitions. [2019-11-24 04:43:24,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:43:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2789 transitions. [2019-11-24 04:43:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:43:24,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:24,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:24,352 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1756434316, now seen corresponding path program 1 times [2019-11-24 04:43:24,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:24,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341022634] [2019-11-24 04:43:24,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:24,477 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 04:43:24,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341022634] [2019-11-24 04:43:24,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:24,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:24,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013454580] [2019-11-24 04:43:24,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:24,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:24,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:24,481 INFO L87 Difference]: Start difference. First operand 1447 states and 2789 transitions. Second operand 3 states. [2019-11-24 04:43:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:24,947 INFO L93 Difference]: Finished difference Result 2552 states and 4910 transitions. [2019-11-24 04:43:24,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:24,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:43:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:24,959 INFO L225 Difference]: With dead ends: 2552 [2019-11-24 04:43:24,959 INFO L226 Difference]: Without dead ends: 1808 [2019-11-24 04:43:24,967 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 04:43:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2019-11-24 04:43:25,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1734. [2019-11-24 04:43:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2019-11-24 04:43:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 3337 transitions. [2019-11-24 04:43:25,044 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 3337 transitions. Word has length 13 [2019-11-24 04:43:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:25,044 INFO L462 AbstractCegarLoop]: Abstraction has 1734 states and 3337 transitions. [2019-11-24 04:43:25,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 3337 transitions. [2019-11-24 04:43:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:43:25,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:25,051 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:25,052 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:25,052 INFO L82 PathProgramCache]: Analyzing trace with hash 868250311, now seen corresponding path program 1 times [2019-11-24 04:43:25,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:25,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731898582] [2019-11-24 04:43:25,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:25,271 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 04:43:25,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731898582] [2019-11-24 04:43:25,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:25,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:25,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996224641] [2019-11-24 04:43:25,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:25,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:25,276 INFO L87 Difference]: Start difference. First operand 1734 states and 3337 transitions. Second operand 3 states. [2019-11-24 04:43:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:25,959 INFO L93 Difference]: Finished difference Result 3536 states and 6796 transitions. [2019-11-24 04:43:25,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:25,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 04:43:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:25,979 INFO L225 Difference]: With dead ends: 3536 [2019-11-24 04:43:25,987 INFO L226 Difference]: Without dead ends: 2522 [2019-11-24 04:43:25,990 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 04:43:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2019-11-24 04:43:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2298. [2019-11-24 04:43:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2019-11-24 04:43:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4415 transitions. [2019-11-24 04:43:26,080 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4415 transitions. Word has length 15 [2019-11-24 04:43:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:26,080 INFO L462 AbstractCegarLoop]: Abstraction has 2298 states and 4415 transitions. [2019-11-24 04:43:26,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4415 transitions. [2019-11-24 04:43:26,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:43:26,083 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:26,083 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:26,083 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:26,084 INFO L82 PathProgramCache]: Analyzing trace with hash 447814535, now seen corresponding path program 1 times [2019-11-24 04:43:26,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:26,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503022140] [2019-11-24 04:43:26,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:26,182 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 04:43:26,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503022140] [2019-11-24 04:43:26,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:26,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:26,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950562794] [2019-11-24 04:43:26,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:26,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:26,189 INFO L87 Difference]: Start difference. First operand 2298 states and 4415 transitions. Second operand 3 states. [2019-11-24 04:43:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:26,716 INFO L93 Difference]: Finished difference Result 3863 states and 7413 transitions. [2019-11-24 04:43:26,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:26,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 04:43:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:26,736 INFO L225 Difference]: With dead ends: 3863 [2019-11-24 04:43:26,737 INFO L226 Difference]: Without dead ends: 2288 [2019-11-24 04:43:26,740 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 04:43:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2019-11-24 04:43:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2288. [2019-11-24 04:43:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2019-11-24 04:43:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 4389 transitions. [2019-11-24 04:43:26,859 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 4389 transitions. Word has length 17 [2019-11-24 04:43:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:26,860 INFO L462 AbstractCegarLoop]: Abstraction has 2288 states and 4389 transitions. [2019-11-24 04:43:26,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:26,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 4389 transitions. [2019-11-24 04:43:26,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 04:43:26,864 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:26,864 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:26,865 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2046458445, now seen corresponding path program 1 times [2019-11-24 04:43:26,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:26,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587902898] [2019-11-24 04:43:26,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:26,992 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 04:43:26,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587902898] [2019-11-24 04:43:26,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:26,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:26,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424504476] [2019-11-24 04:43:26,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:26,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:26,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:26,997 INFO L87 Difference]: Start difference. First operand 2288 states and 4389 transitions. Second operand 3 states. [2019-11-24 04:43:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:27,661 INFO L93 Difference]: Finished difference Result 5236 states and 10031 transitions. [2019-11-24 04:43:27,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:27,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 04:43:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:27,684 INFO L225 Difference]: With dead ends: 5236 [2019-11-24 04:43:27,684 INFO L226 Difference]: Without dead ends: 3688 [2019-11-24 04:43:27,690 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 04:43:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3688 states. [2019-11-24 04:43:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3688 to 3388. [2019-11-24 04:43:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2019-11-24 04:43:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 6482 transitions. [2019-11-24 04:43:27,834 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 6482 transitions. Word has length 18 [2019-11-24 04:43:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:27,835 INFO L462 AbstractCegarLoop]: Abstraction has 3388 states and 6482 transitions. [2019-11-24 04:43:27,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 6482 transitions. [2019-11-24 04:43:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:43:27,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:27,838 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:27,838 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:27,838 INFO L82 PathProgramCache]: Analyzing trace with hash -984267546, now seen corresponding path program 1 times [2019-11-24 04:43:27,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:27,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224291655] [2019-11-24 04:43:27,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:27,996 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 04:43:27,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224291655] [2019-11-24 04:43:27,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:27,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:27,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408956833] [2019-11-24 04:43:28,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:28,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:28,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:28,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:28,002 INFO L87 Difference]: Start difference. First operand 3388 states and 6482 transitions. Second operand 3 states. [2019-11-24 04:43:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:28,564 INFO L93 Difference]: Finished difference Result 3388 states and 6482 transitions. [2019-11-24 04:43:28,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:28,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 04:43:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:28,583 INFO L225 Difference]: With dead ends: 3388 [2019-11-24 04:43:28,583 INFO L226 Difference]: Without dead ends: 3381 [2019-11-24 04:43:28,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:43:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2019-11-24 04:43:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3381. [2019-11-24 04:43:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3381 states. [2019-11-24 04:43:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 6470 transitions. [2019-11-24 04:43:28,765 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 6470 transitions. Word has length 19 [2019-11-24 04:43:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:28,766 INFO L462 AbstractCegarLoop]: Abstraction has 3381 states and 6470 transitions. [2019-11-24 04:43:28,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 6470 transitions. [2019-11-24 04:43:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 04:43:28,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:28,779 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:28,779 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1950224987, now seen corresponding path program 1 times [2019-11-24 04:43:28,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:28,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091533971] [2019-11-24 04:43:28,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:29,068 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 04:43:29,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091533971] [2019-11-24 04:43:29,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:29,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:29,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335438333] [2019-11-24 04:43:29,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:43:29,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:29,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:43:29,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:43:29,073 INFO L87 Difference]: Start difference. First operand 3381 states and 6470 transitions. Second operand 4 states. [2019-11-24 04:43:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:29,423 INFO L93 Difference]: Finished difference Result 6242 states and 11852 transitions. [2019-11-24 04:43:29,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:43:29,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-24 04:43:29,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:29,440 INFO L225 Difference]: With dead ends: 6242 [2019-11-24 04:43:29,440 INFO L226 Difference]: Without dead ends: 3213 [2019-11-24 04:43:29,445 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:43:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2019-11-24 04:43:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3033. [2019-11-24 04:43:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2019-11-24 04:43:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5793 transitions. [2019-11-24 04:43:29,572 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5793 transitions. Word has length 32 [2019-11-24 04:43:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:29,573 INFO L462 AbstractCegarLoop]: Abstraction has 3033 states and 5793 transitions. [2019-11-24 04:43:29,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:43:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5793 transitions. [2019-11-24 04:43:29,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-24 04:43:29,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:29,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:29,576 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:29,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:29,577 INFO L82 PathProgramCache]: Analyzing trace with hash 704756531, now seen corresponding path program 1 times [2019-11-24 04:43:29,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:29,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432638167] [2019-11-24 04:43:29,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:29,801 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 04:43:29,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432638167] [2019-11-24 04:43:29,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:29,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:43:29,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644431428] [2019-11-24 04:43:29,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:43:29,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:43:29,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:43:29,804 INFO L87 Difference]: Start difference. First operand 3033 states and 5793 transitions. Second operand 4 states. [2019-11-24 04:43:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:32,092 INFO L93 Difference]: Finished difference Result 6131 states and 11700 transitions. [2019-11-24 04:43:32,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:43:32,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-24 04:43:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:32,130 INFO L225 Difference]: With dead ends: 6131 [2019-11-24 04:43:32,130 INFO L226 Difference]: Without dead ends: 3310 [2019-11-24 04:43:32,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:43:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-11-24 04:43:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3033. [2019-11-24 04:43:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3033 states. [2019-11-24 04:43:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5718 transitions. [2019-11-24 04:43:32,270 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5718 transitions. Word has length 33 [2019-11-24 04:43:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:32,271 INFO L462 AbstractCegarLoop]: Abstraction has 3033 states and 5718 transitions. [2019-11-24 04:43:32,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:43:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5718 transitions. [2019-11-24 04:43:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-24 04:43:32,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:32,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:32,274 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash -305329859, now seen corresponding path program 1 times [2019-11-24 04:43:32,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:32,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419454575] [2019-11-24 04:43:32,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:32,514 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 04:43:32,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419454575] [2019-11-24 04:43:32,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565686250] [2019-11-24 04:43:32,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:32,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:32,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:32,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:32,516 INFO L87 Difference]: Start difference. First operand 3033 states and 5718 transitions. Second operand 3 states. [2019-11-24 04:43:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:34,242 INFO L93 Difference]: Finished difference Result 8031 states and 15160 transitions. [2019-11-24 04:43:34,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:34,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-11-24 04:43:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:34,257 INFO L225 Difference]: With dead ends: 8031 [2019-11-24 04:43:34,257 INFO L226 Difference]: Without dead ends: 5231 [2019-11-24 04:43:34,262 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 04:43:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2019-11-24 04:43:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 2988. [2019-11-24 04:43:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2019-11-24 04:43:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 5598 transitions. [2019-11-24 04:43:34,412 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 5598 transitions. Word has length 38 [2019-11-24 04:43:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:34,412 INFO L462 AbstractCegarLoop]: Abstraction has 2988 states and 5598 transitions. [2019-11-24 04:43:34,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 5598 transitions. [2019-11-24 04:43:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-24 04:43:34,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:34,415 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:34,416 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash -374141124, now seen corresponding path program 1 times [2019-11-24 04:43:34,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:34,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703365155] [2019-11-24 04:43:34,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:34,695 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 04:43:34,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703365155] [2019-11-24 04:43:34,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:34,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:34,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956948019] [2019-11-24 04:43:34,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:34,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:34,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:34,698 INFO L87 Difference]: Start difference. First operand 2988 states and 5598 transitions. Second operand 3 states. [2019-11-24 04:43:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:38,545 INFO L93 Difference]: Finished difference Result 7926 states and 14910 transitions. [2019-11-24 04:43:38,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:38,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-24 04:43:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:38,558 INFO L225 Difference]: With dead ends: 7926 [2019-11-24 04:43:38,558 INFO L226 Difference]: Without dead ends: 5198 [2019-11-24 04:43:38,564 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 04:43:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2019-11-24 04:43:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 2958. [2019-11-24 04:43:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2958 states. [2019-11-24 04:43:38,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 5493 transitions. [2019-11-24 04:43:38,714 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 5493 transitions. Word has length 39 [2019-11-24 04:43:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:38,714 INFO L462 AbstractCegarLoop]: Abstraction has 2958 states and 5493 transitions. [2019-11-24 04:43:38,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 5493 transitions. [2019-11-24 04:43:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-24 04:43:38,718 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:38,719 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:38,719 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash -67791689, now seen corresponding path program 1 times [2019-11-24 04:43:38,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:38,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595856350] [2019-11-24 04:43:38,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:38,966 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 04:43:38,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595856350] [2019-11-24 04:43:38,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:38,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:38,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859314569] [2019-11-24 04:43:38,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:38,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:38,970 INFO L87 Difference]: Start difference. First operand 2958 states and 5493 transitions. Second operand 3 states. [2019-11-24 04:43:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:40,334 INFO L93 Difference]: Finished difference Result 7846 states and 14685 transitions. [2019-11-24 04:43:40,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:40,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-24 04:43:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:40,353 INFO L225 Difference]: With dead ends: 7846 [2019-11-24 04:43:40,353 INFO L226 Difference]: Without dead ends: 5180 [2019-11-24 04:43:40,358 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 04:43:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2019-11-24 04:43:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 2943. [2019-11-24 04:43:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2943 states. [2019-11-24 04:43:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 5403 transitions. [2019-11-24 04:43:40,501 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 5403 transitions. Word has length 41 [2019-11-24 04:43:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:40,501 INFO L462 AbstractCegarLoop]: Abstraction has 2943 states and 5403 transitions. [2019-11-24 04:43:40,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 5403 transitions. [2019-11-24 04:43:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-24 04:43:40,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:40,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:40,505 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1554530593, now seen corresponding path program 1 times [2019-11-24 04:43:40,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:40,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313531507] [2019-11-24 04:43:40,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:40,731 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 04:43:40,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313531507] [2019-11-24 04:43:40,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:40,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:43:40,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315203358] [2019-11-24 04:43:40,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:43:40,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:40,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:43:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:43:40,733 INFO L87 Difference]: Start difference. First operand 2943 states and 5403 transitions. Second operand 3 states. [2019-11-24 04:43:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:43:41,949 INFO L93 Difference]: Finished difference Result 5834 states and 10763 transitions. [2019-11-24 04:43:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:43:41,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-11-24 04:43:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:43:41,960 INFO L225 Difference]: With dead ends: 5834 [2019-11-24 04:43:41,960 INFO L226 Difference]: Without dead ends: 3220 [2019-11-24 04:43:41,965 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 04:43:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2019-11-24 04:43:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2943. [2019-11-24 04:43:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2943 states. [2019-11-24 04:43:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 5328 transitions. [2019-11-24 04:43:42,094 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 5328 transitions. Word has length 44 [2019-11-24 04:43:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:43:42,095 INFO L462 AbstractCegarLoop]: Abstraction has 2943 states and 5328 transitions. [2019-11-24 04:43:42,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:43:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 5328 transitions. [2019-11-24 04:43:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-24 04:43:42,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:43:42,097 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:43:42,097 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:43:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:43:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1337250516, now seen corresponding path program 1 times [2019-11-24 04:43:42,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:43:42,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303831809] [2019-11-24 04:43:42,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:43:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:43:42,691 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 04:43:42,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303831809] [2019-11-24 04:43:42,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:43:42,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:43:42,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904849922] [2019-11-24 04:43:42,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:43:42,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:43:42,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:43:42,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:43:42,694 INFO L87 Difference]: Start difference. First operand 2943 states and 5328 transitions. Second operand 5 states.