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 -i ../../../trunk/examples/svcomp/psyco/psyco_net_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:42:57,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:42:57,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:42:57,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:42:57,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:42:57,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:42:57,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:42:57,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:42:57,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:42:57,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:42:57,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:42:57,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:42:57,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:42:57,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:42:57,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:42:57,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:42:57,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:42:57,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:42:57,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:42:57,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:42:57,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:42:57,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:42:57,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:42:57,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:42:57,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:42:57,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:42:57,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:42:57,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:42:57,713 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 19:42:57,738 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:42:57,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:42:57,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:42:57,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:42:57,741 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:42:57,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:42:57,742 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:42:57,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:42:57,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:42:57,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:42:57,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:42:57,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:42:57,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:42:57,744 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:42:57,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:42:57,745 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:42:57,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:42:57,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:42:57,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:42:57,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:42:57,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:42:57,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:42:57,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:42:57,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:42:57,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:42:57,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:42:57,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:42:57,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:42:57,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:42:58,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:42:58,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:42:58,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:42:58,088 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:42:58,088 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:42:58,089 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-13 19:42:58,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2de217f/50aec9259aca4565a6465e88f9011982/FLAG34ea71559 [2019-10-13 19:42:59,578 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:42:59,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_net_1.c [2019-10-13 19:42:59,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2de217f/50aec9259aca4565a6465e88f9011982/FLAG34ea71559 [2019-10-13 19:43:00,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f2de217f/50aec9259aca4565a6465e88f9011982 [2019-10-13 19:43:00,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:43:00,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:43:00,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:43:00,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:43:00,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:43:00,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:00" (1/1) ... [2019-10-13 19:43:00,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:00, skipping insertion in model container [2019-10-13 19:43:00,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:00" (1/1) ... [2019-10-13 19:43:00,074 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:43:00,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:43:02,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:43:02,868 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:43:03,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:43:04,014 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:43:04,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04 WrapperNode [2019-10-13 19:43:04,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:43:04,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:43:04,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:43:04,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:43:04,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:04,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:04,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:04,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:04,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:04,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:05,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2019-10-13 19:43:05,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:43:05,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:43:05,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:43:05,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:43:05,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (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 19:43:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:43:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:43:05,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:43:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:43:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:43:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:43:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:43:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:43:25,433 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:43:25,434 INFO L284 CfgBuilder]: Removed 1130 assume(true) statements. [2019-10-13 19:43:25,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:25 BoogieIcfgContainer [2019-10-13 19:43:25,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:43:25,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:43:25,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:43:25,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:43:25,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:00" (1/3) ... [2019-10-13 19:43:25,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3510c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:25, skipping insertion in model container [2019-10-13 19:43:25,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (2/3) ... [2019-10-13 19:43:25,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3510c046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:25, skipping insertion in model container [2019-10-13 19:43:25,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:25" (3/3) ... [2019-10-13 19:43:25,447 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2019-10-13 19:43:25,456 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:43:25,468 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:43:25,478 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:43:25,532 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:43:25,532 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:43:25,532 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:43:25,532 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:43:25,532 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:43:25,533 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:43:25,533 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:43:25,533 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:43:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states. [2019-10-13 19:43:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:43:25,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:43:25,658 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:43:25,660 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:43:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:43:25,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2089661630, now seen corresponding path program 1 times [2019-10-13 19:43:25,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:43:25,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967260534] [2019-10-13 19:43:25,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:43:25,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:43:25,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:43:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:43:26,286 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:43:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:43:26,329 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 19:43:26,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967260534] [2019-10-13 19:43:26,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:43:26,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:43:26,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747226746] [2019-10-13 19:43:26,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:43:26,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:43:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:43:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:43:26,354 INFO L87 Difference]: Start difference. First operand 9216 states. Second operand 3 states. [2019-10-13 19:43:26,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:43:26,847 INFO L93 Difference]: Finished difference Result 17704 states and 35386 transitions. [2019-10-13 19:43:26,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:43:26,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 19:43:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:43:26,926 INFO L225 Difference]: With dead ends: 17704 [2019-10-13 19:43:26,927 INFO L226 Difference]: Without dead ends: 8284 [2019-10-13 19:43:26,952 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:43:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2019-10-13 19:43:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2019-10-13 19:43:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8284 states. [2019-10-13 19:43:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 13001 transitions. [2019-10-13 19:43:27,437 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 13001 transitions. Word has length 13 [2019-10-13 19:43:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:43:27,438 INFO L462 AbstractCegarLoop]: Abstraction has 8284 states and 13001 transitions. [2019-10-13 19:43:27,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:43:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 13001 transitions. [2019-10-13 19:43:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:43:27,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:43:27,440 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:43:27,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:43:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:43:27,443 INFO L82 PathProgramCache]: Analyzing trace with hash 886062589, now seen corresponding path program 1 times [2019-10-13 19:43:27,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:43:27,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436447660] [2019-10-13 19:43:27,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:43:27,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:43:27,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:43:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:43:27,775 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:43:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:43:27,790 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 19:43:27,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436447660] [2019-10-13 19:43:27,791 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:43:27,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:43:27,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938498090] [2019-10-13 19:43:27,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:43:27,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:43:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:43:27,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:43:27,794 INFO L87 Difference]: Start difference. First operand 8284 states and 13001 transitions. Second operand 4 states. [2019-10-13 19:43:28,010 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 172