java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/psyco/psyco_net_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:22:09,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:22:09,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:22:09,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:22:09,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:22:09,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:22:09,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:22:09,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:22:09,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:22:09,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:22:09,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:22:09,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:22:09,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:22:09,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:22:09,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:22:09,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:22:09,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:22:09,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:22:09,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:22:09,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:22:09,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:22:09,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:22:09,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:22:09,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:22:09,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:22:09,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:22:09,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:22:09,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:22:09,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:22:10,010 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:22:10,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:22:10,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:22:10,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:22:10,013 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:22:10,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:22:10,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:22:10,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:22:10,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:22:10,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:22:10,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:22:10,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:22:10,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:22:10,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:22:10,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:22:10,017 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:22:10,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:22:10,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:22:10,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:22:10,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:22:10,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:22:10,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:22:10,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:22:10,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:22:10,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:22:10,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:22:10,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:22:10,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:22:10,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:22:10,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:22:10,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:22:10,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:22:10,315 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:22:10,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:22:10,316 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-15 01:22:10,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30863110/4fab903b2c0443db98f603cb6ad72234/FLAG8cce851ab [2019-10-15 01:22:11,552 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:22:11,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-15 01:22:11,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30863110/4fab903b2c0443db98f603cb6ad72234/FLAG8cce851ab [2019-10-15 01:22:11,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30863110/4fab903b2c0443db98f603cb6ad72234 [2019-10-15 01:22:11,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:22:11,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:22:11,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:11,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:22:11,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:22:11,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:11" (1/1) ... [2019-10-15 01:22:11,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2730cc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:11, skipping insertion in model container [2019-10-15 01:22:11,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:11" (1/1) ... [2019-10-15 01:22:11,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:22:12,419 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:22:14,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:14,456 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:22:15,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:15,650 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:22:15,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15 WrapperNode [2019-10-15 01:22:15,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:15,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:22:15,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:22:15,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:22:15,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:15,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:15,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:15,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:16,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:16,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:16,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (1/1) ... [2019-10-15 01:22:16,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:22:16,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:22:16,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:22:16,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:22:16,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (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 [2019-10-15 01:22:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:22:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:22:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:22:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:22:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:22:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:22:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:22:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:22:36,592 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:22:36,593 INFO L284 CfgBuilder]: Removed 1130 assume(true) statements. [2019-10-15 01:22:36,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:36 BoogieIcfgContainer [2019-10-15 01:22:36,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:22:36,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:22:36,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:22:36,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:22:36,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:22:11" (1/3) ... [2019-10-15 01:22:36,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c508fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:36, skipping insertion in model container [2019-10-15 01:22:36,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:15" (2/3) ... [2019-10-15 01:22:36,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c508fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:36, skipping insertion in model container [2019-10-15 01:22:36,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:36" (3/3) ... [2019-10-15 01:22:36,610 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2019-10-15 01:22:36,621 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:22:36,633 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:22:36,645 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:22:36,710 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:22:36,710 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:22:36,710 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:22:36,710 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:22:36,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:22:36,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:22:36,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:22:36,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:22:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states. [2019-10-15 01:22:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:22:36,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:36,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:36,843 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2089661630, now seen corresponding path program 1 times [2019-10-15 01:22:36,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:36,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416694548] [2019-10-15 01:22:36,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:36,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:36,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:22:37,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416694548] [2019-10-15 01:22:37,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:37,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:22:37,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131073669] [2019-10-15 01:22:37,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:22:37,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:37,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:22:37,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:22:37,183 INFO L87 Difference]: Start difference. First operand 9216 states. Second operand 2 states. [2019-10-15 01:22:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:37,518 INFO L93 Difference]: Finished difference Result 17704 states and 35386 transitions. [2019-10-15 01:22:37,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:22:37,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-15 01:22:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:37,620 INFO L225 Difference]: With dead ends: 17704 [2019-10-15 01:22:37,621 INFO L226 Difference]: Without dead ends: 8284 [2019-10-15 01:22:37,665 INFO L600 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 [2019-10-15 01:22:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2019-10-15 01:22:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2019-10-15 01:22:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8284 states. [2019-10-15 01:22:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 13001 transitions. [2019-10-15 01:22:38,070 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 13001 transitions. Word has length 13 [2019-10-15 01:22:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:38,071 INFO L462 AbstractCegarLoop]: Abstraction has 8284 states and 13001 transitions. [2019-10-15 01:22:38,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:22:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 13001 transitions. [2019-10-15 01:22:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:22:38,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:38,075 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:38,075 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash 886062589, now seen corresponding path program 1 times [2019-10-15 01:22:38,077 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:38,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048009049] [2019-10-15 01:22:38,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:38,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:38,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:22:38,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048009049] [2019-10-15 01:22:38,217 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:38,217 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:22:38,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339780474] [2019-10-15 01:22:38,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:38,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:38,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:38,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:38,220 INFO L87 Difference]: Start difference. First operand 8284 states and 13001 transitions. Second operand 3 states. [2019-10-15 01:22:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:40,858 INFO L93 Difference]: Finished difference Result 16565 states and 26000 transitions. [2019-10-15 01:22:40,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:40,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-15 01:22:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:40,899 INFO L225 Difference]: With dead ends: 16565 [2019-10-15 01:22:40,900 INFO L226 Difference]: Without dead ends: 8287 [2019-10-15 01:22:40,917 INFO L600 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 [2019-10-15 01:22:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2019-10-15 01:22:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 8287. [2019-10-15 01:22:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8287 states. [2019-10-15 01:22:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 13004 transitions. [2019-10-15 01:22:41,144 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 13004 transitions. Word has length 14 [2019-10-15 01:22:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:41,144 INFO L462 AbstractCegarLoop]: Abstraction has 8287 states and 13004 transitions. [2019-10-15 01:22:41,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 13004 transitions. [2019-10-15 01:22:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 01:22:41,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:41,146 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:41,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:41,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1585116607, now seen corresponding path program 1 times [2019-10-15 01:22:41,148 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:41,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672571330] [2019-10-15 01:22:41,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:41,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:41,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:22:41,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672571330] [2019-10-15 01:22:41,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:41,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:22:41,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420067334] [2019-10-15 01:22:41,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:41,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:41,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:41,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:41,273 INFO L87 Difference]: Start difference. First operand 8287 states and 13004 transitions. Second operand 3 states.