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-f4eb214f-m [2019-10-13 21:23:07,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:23:07,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:23:07,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:23:07,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:23:07,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:23:07,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:23:07,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:23:07,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:23:07,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:23:07,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:23:07,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:23:07,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:23:07,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:23:07,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:23:07,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:23:07,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:23:07,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:23:07,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:23:07,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:23:07,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:23:07,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:23:07,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:23:07,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:23:07,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:23:07,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:23:07,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:23:07,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:23:07,726 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 [2019-10-13 21:23:07,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:23:07,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:23:07,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:23:07,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:23:07,741 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:23:07,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:23:07,742 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:23:07,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:23:07,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:23:07,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:23:07,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:23:07,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:23:07,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:23:07,743 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:23:07,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:23:07,744 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:23:07,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:23:07,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:23:07,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:23:07,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:23:07,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:23:07,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:23:07,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:23:07,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:23:07,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:23:07,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:23:07,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:23:07,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:23:07,747 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 [2019-10-13 21:23:08,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:23:08,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:23:08,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:23:08,110 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:23:08,110 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:23:08,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-13 21:23:08,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4cbbc2d/a9318cff17e043c78a0dd4c05d291f7a/FLAG375abff07 [2019-10-13 21:23:09,607 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:23:09,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-13 21:23:09,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4cbbc2d/a9318cff17e043c78a0dd4c05d291f7a/FLAG375abff07 [2019-10-13 21:23:10,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4cbbc2d/a9318cff17e043c78a0dd4c05d291f7a [2019-10-13 21:23:10,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:23:10,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:23:10,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:23:10,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:23:10,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:23:10,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:10" (1/1) ... [2019-10-13 21:23:10,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31140a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:10, skipping insertion in model container [2019-10-13 21:23:10,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:10" (1/1) ... [2019-10-13 21:23:10,107 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:23:10,867 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:23:12,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:23:12,967 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:23:14,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:23:14,973 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:23:14,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14 WrapperNode [2019-10-13 21:23:14,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:23:14,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:23:14,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:23:14,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:23:14,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:14,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:15,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:15,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:15,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:15,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:15,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (1/1) ... [2019-10-13 21:23:16,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:23:16,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:23:16,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:23:16,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:23:16,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (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 [2019-10-13 21:23:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:23:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:23:16,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:23:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:23:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:23:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:23:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:23:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:23:36,363 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:23:36,363 INFO L284 CfgBuilder]: Removed 1130 assume(true) statements. [2019-10-13 21:23:36,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:36 BoogieIcfgContainer [2019-10-13 21:23:36,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:23:36,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:23:36,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:23:36,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:23:36,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:23:10" (1/3) ... [2019-10-13 21:23:36,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84858dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:36, skipping insertion in model container [2019-10-13 21:23:36,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:14" (2/3) ... [2019-10-13 21:23:36,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84858dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:36, skipping insertion in model container [2019-10-13 21:23:36,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:36" (3/3) ... [2019-10-13 21:23:36,378 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2019-10-13 21:23:36,388 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:23:36,398 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:23:36,411 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:23:36,483 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:23:36,484 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:23:36,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:23:36,484 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:23:36,484 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:23:36,484 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:23:36,485 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:23:36,485 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:23:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states. [2019-10-13 21:23:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:23:36,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:36,625 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:23:36,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2089661630, now seen corresponding path program 1 times [2019-10-13 21:23:36,644 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:36,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95132923] [2019-10-13 21:23:36,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:36,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:36,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:23:36,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95132923] [2019-10-13 21:23:36,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:23:36,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:23:36,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157876052] [2019-10-13 21:23:36,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:23:36,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:36,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:23:36,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:23:36,971 INFO L87 Difference]: Start difference. First operand 9216 states. Second operand 2 states. [2019-10-13 21:23:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:37,282 INFO L93 Difference]: Finished difference Result 17704 states and 35386 transitions. [2019-10-13 21:23:37,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:23:37,284 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-13 21:23:37,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:37,376 INFO L225 Difference]: With dead ends: 17704 [2019-10-13 21:23:37,377 INFO L226 Difference]: Without dead ends: 8284 [2019-10-13 21:23:37,414 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 [2019-10-13 21:23:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2019-10-13 21:23:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2019-10-13 21:23:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8284 states. [2019-10-13 21:23:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 13001 transitions. [2019-10-13 21:23:37,744 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 13001 transitions. Word has length 13 [2019-10-13 21:23:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:37,745 INFO L462 AbstractCegarLoop]: Abstraction has 8284 states and 13001 transitions. [2019-10-13 21:23:37,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:23:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 13001 transitions. [2019-10-13 21:23:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:23:37,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:37,746 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:23:37,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:37,747 INFO L82 PathProgramCache]: Analyzing trace with hash 886062589, now seen corresponding path program 1 times [2019-10-13 21:23:37,748 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:37,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591924931] [2019-10-13 21:23:37,748 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:37,748 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:37,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:23:37,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591924931] [2019-10-13 21:23:37,870 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:23:37,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:23:37,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866570480] [2019-10-13 21:23:37,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:23:37,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:23:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:23:37,874 INFO L87 Difference]: Start difference. First operand 8284 states and 13001 transitions. Second operand 3 states. [2019-10-13 21:23:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:23:40,558 INFO L93 Difference]: Finished difference Result 16565 states and 26000 transitions. [2019-10-13 21:23:40,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:23:40,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 21:23:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:23:40,606 INFO L225 Difference]: With dead ends: 16565 [2019-10-13 21:23:40,606 INFO L226 Difference]: Without dead ends: 8287 [2019-10-13 21:23:40,626 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 [2019-10-13 21:23:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2019-10-13 21:23:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 8287. [2019-10-13 21:23:41,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8287 states. [2019-10-13 21:23:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 13004 transitions. [2019-10-13 21:23:41,047 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 13004 transitions. Word has length 14 [2019-10-13 21:23:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:23:41,048 INFO L462 AbstractCegarLoop]: Abstraction has 8287 states and 13004 transitions. [2019-10-13 21:23:41,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:23:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 13004 transitions. [2019-10-13 21:23:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:23:41,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:23:41,050 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:23:41,051 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:23:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:23:41,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1585116607, now seen corresponding path program 1 times [2019-10-13 21:23:41,052 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:23:41,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777799404] [2019-10-13 21:23:41,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:41,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:23:41,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:23:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:23:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:23:41,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777799404] [2019-10-13 21:23:41,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:23:41,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:23:41,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012511726] [2019-10-13 21:23:41,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:23:41,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:23:41,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:23:41,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:23:41,243 INFO L87 Difference]: Start difference. First operand 8287 states and 13004 transitions. Second operand 3 states.