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/eca-rers2012/Problem14_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:01:10,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:01:10,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:01:10,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:01:10,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:01:10,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:01:10,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:01:10,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:01:10,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:01:10,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:01:10,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:01:10,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:01:10,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:01:10,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:01:10,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:01:10,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:01:10,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:01:10,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:01:10,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:01:10,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:01:10,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:01:10,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:01:10,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:01:10,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:01:10,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:01:10,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:01:10,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:01:10,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:01:10,774 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 [2019-10-14 22:01:10,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:01:10,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:01:10,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:01:10,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:01:10,795 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:01:10,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:01:10,795 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:01:10,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:01:10,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:01:10,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:01:10,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:01:10,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:01:10,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:01:10,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:01:10,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:01:10,798 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:01:10,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:01:10,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:01:10,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:01:10,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:01:10,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:01:10,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:01:10,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:01:10,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:01:10,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:01:10,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:01:10,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:01:10,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:01:10,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:01:11,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:01:11,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:01:11,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:01:11,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:01:11,116 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:01:11,116 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2019-10-14 22:01:11,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008a562ba/daf7d36453ff44f496217f96b3c1914b/FLAG6ef565816 [2019-10-14 22:01:11,753 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:01:11,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2019-10-14 22:01:11,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008a562ba/daf7d36453ff44f496217f96b3c1914b/FLAG6ef565816 [2019-10-14 22:01:12,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008a562ba/daf7d36453ff44f496217f96b3c1914b [2019-10-14 22:01:12,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:01:12,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:01:12,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:01:12,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:01:12,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:01:12,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283ca1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12, skipping insertion in model container [2019-10-14 22:01:12,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,045 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:01:12,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:01:12,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:01:12,682 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:01:12,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:01:12,844 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:01:12,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12 WrapperNode [2019-10-14 22:01:12,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:01:12,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:01:12,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:01:12,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:01:12,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:12,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (1/1) ... [2019-10-14 22:01:13,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:01:13,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:01:13,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:01:13,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:01:13,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (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 [2019-10-14 22:01:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:01:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:01:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:01:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:01:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:01:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:01:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:01:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:01:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:01:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:01:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:01:14,506 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:01:14,507 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:01:14,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:14 BoogieIcfgContainer [2019-10-14 22:01:14,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:01:14,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:01:14,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:01:14,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:01:14,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:01:12" (1/3) ... [2019-10-14 22:01:14,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a78a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:14, skipping insertion in model container [2019-10-14 22:01:14,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:12" (2/3) ... [2019-10-14 22:01:14,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a78a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:14, skipping insertion in model container [2019-10-14 22:01:14,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:14" (3/3) ... [2019-10-14 22:01:14,529 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label09.c [2019-10-14 22:01:14,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:01:14,551 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:01:14,565 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:01:14,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:01:14,613 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:01:14,615 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:01:14,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:01:14,616 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:01:14,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:01:14,616 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:01:14,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:01:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-14 22:01:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 22:01:14,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:14,670 INFO L380 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, 1, 1, 1, 1] [2019-10-14 22:01:14,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1524899170, now seen corresponding path program 1 times [2019-10-14 22:01:14,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:14,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407165818] [2019-10-14 22:01:14,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:14,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:14,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:15,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407165818] [2019-10-14 22:01:15,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:01:15,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:01:15,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48224262] [2019-10-14 22:01:15,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:01:15,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:15,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:01:15,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:01:15,158 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2019-10-14 22:01:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:17,741 INFO L93 Difference]: Finished difference Result 902 states and 1627 transitions. [2019-10-14 22:01:17,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:01:17,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-10-14 22:01:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:17,766 INFO L225 Difference]: With dead ends: 902 [2019-10-14 22:01:17,766 INFO L226 Difference]: Without dead ends: 564 [2019-10-14 22:01:17,776 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-10-14 22:01:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2019-10-14 22:01:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-14 22:01:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 782 transitions. [2019-10-14 22:01:17,911 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 782 transitions. Word has length 51 [2019-10-14 22:01:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:17,912 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 782 transitions. [2019-10-14 22:01:17,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:01:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 782 transitions. [2019-10-14 22:01:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-14 22:01:17,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:17,939 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-14 22:01:17,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1193901298, now seen corresponding path program 1 times [2019-10-14 22:01:17,943 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:17,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203861186] [2019-10-14 22:01:17,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:17,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:17,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:18,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203861186] [2019-10-14 22:01:18,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088427613] [2019-10-14 22:01:18,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:18,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:01:18,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:18,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:01:18,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:01:18,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155397494] [2019-10-14 22:01:18,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:01:18,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:18,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:01:18,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:18,601 INFO L87 Difference]: Start difference. First operand 560 states and 782 transitions. Second operand 3 states. [2019-10-14 22:01:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:19,695 INFO L93 Difference]: Finished difference Result 1666 states and 2358 transitions. [2019-10-14 22:01:19,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:01:19,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-10-14 22:01:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:19,705 INFO L225 Difference]: With dead ends: 1666 [2019-10-14 22:01:19,705 INFO L226 Difference]: Without dead ends: 1112 [2019-10-14 22:01:19,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-10-14 22:01:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2019-10-14 22:01:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2019-10-14 22:01:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1515 transitions. [2019-10-14 22:01:19,767 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1515 transitions. Word has length 163 [2019-10-14 22:01:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:19,768 INFO L462 AbstractCegarLoop]: Abstraction has 1112 states and 1515 transitions. [2019-10-14 22:01:19,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:01:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1515 transitions. [2019-10-14 22:01:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-14 22:01:19,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:19,772 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1] [2019-10-14 22:01:19,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:19,978 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2142206966, now seen corresponding path program 1 times [2019-10-14 22:01:19,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:19,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983064992] [2019-10-14 22:01:19,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:19,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:19,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:20,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983064992] [2019-10-14 22:01:20,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400362971] [2019-10-14 22:01:20,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:20,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:01:20,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:20,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:01:20,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 22:01:20,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749414631] [2019-10-14 22:01:20,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:01:20,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:20,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:01:20,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:20,473 INFO L87 Difference]: Start difference. First operand 1112 states and 1515 transitions. Second operand 3 states. [2019-10-14 22:01:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:21,274 INFO L93 Difference]: Finished difference Result 1664 states and 2315 transitions. [2019-10-14 22:01:21,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:01:21,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-14 22:01:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:21,285 INFO L225 Difference]: With dead ends: 1664 [2019-10-14 22:01:21,286 INFO L226 Difference]: Without dead ends: 1662 [2019-10-14 22:01:21,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2019-10-14 22:01:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1296. [2019-10-14 22:01:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2019-10-14 22:01:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1824 transitions. [2019-10-14 22:01:21,339 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1824 transitions. Word has length 181 [2019-10-14 22:01:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:21,340 INFO L462 AbstractCegarLoop]: Abstraction has 1296 states and 1824 transitions. [2019-10-14 22:01:21,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:01:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1824 transitions. [2019-10-14 22:01:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-14 22:01:21,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:21,345 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-10-14 22:01:21,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:21,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash -791937967, now seen corresponding path program 1 times [2019-10-14 22:01:21,560 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:21,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018981690] [2019-10-14 22:01:21,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:21,561 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:21,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 148 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 22:01:22,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018981690] [2019-10-14 22:01:22,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818508314] [2019-10-14 22:01:22,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:22,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 22:01:22,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:22,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:01:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 22:01:22,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:01:22,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-14 22:01:22,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951077491] [2019-10-14 22:01:22,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:01:22,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:22,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:01:22,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:01:22,404 INFO L87 Difference]: Start difference. First operand 1296 states and 1824 transitions. Second operand 5 states. [2019-10-14 22:01:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:23,728 INFO L93 Difference]: Finished difference Result 2982 states and 4167 transitions. [2019-10-14 22:01:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:01:23,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2019-10-14 22:01:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:23,737 INFO L225 Difference]: With dead ends: 2982 [2019-10-14 22:01:23,737 INFO L226 Difference]: Without dead ends: 1692 [2019-10-14 22:01:23,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2019-10-14 22:01:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2019-10-14 22:01:23,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1684. [2019-10-14 22:01:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2019-10-14 22:01:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2289 transitions. [2019-10-14 22:01:23,801 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2289 transitions. Word has length 236 [2019-10-14 22:01:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:23,802 INFO L462 AbstractCegarLoop]: Abstraction has 1684 states and 2289 transitions. [2019-10-14 22:01:23,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:01:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2289 transitions. [2019-10-14 22:01:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2019-10-14 22:01:23,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:23,809 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:01:24,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:24,014 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:24,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:24,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1222821270, now seen corresponding path program 1 times [2019-10-14 22:01:24,014 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:24,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178697309] [2019-10-14 22:01:24,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:24,015 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:24,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:01:24,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178697309] [2019-10-14 22:01:24,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545053458] [2019-10-14 22:01:24,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:24,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:01:24,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:24,640 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:01:24,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2019-10-14 22:01:24,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978508920] [2019-10-14 22:01:24,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 22:01:24,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:24,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 22:01:24,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:01:24,642 INFO L87 Difference]: Start difference. First operand 1684 states and 2289 transitions. Second operand 11 states. [2019-10-14 22:01:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:26,951 INFO L93 Difference]: Finished difference Result 4196 states and 6313 transitions. [2019-10-14 22:01:26,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:01:26,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2019-10-14 22:01:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:26,978 INFO L225 Difference]: With dead ends: 4196 [2019-10-14 22:01:26,979 INFO L226 Difference]: Without dead ends: 2700 [2019-10-14 22:01:26,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-10-14 22:01:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2019-10-14 22:01:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2634. [2019-10-14 22:01:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2634 states. [2019-10-14 22:01:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3570 transitions. [2019-10-14 22:01:27,118 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3570 transitions. Word has length 263 [2019-10-14 22:01:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:27,119 INFO L462 AbstractCegarLoop]: Abstraction has 2634 states and 3570 transitions. [2019-10-14 22:01:27,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 22:01:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3570 transitions. [2019-10-14 22:01:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-14 22:01:27,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:27,130 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 22:01:27,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:27,335 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1221316153, now seen corresponding path program 1 times [2019-10-14 22:01:27,336 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:27,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129416797] [2019-10-14 22:01:27,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:27,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:27,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 142 proven. 213 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 22:01:28,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129416797] [2019-10-14 22:01:28,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885236173] [2019-10-14 22:01:28,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:28,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 22:01:28,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:28,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:01:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 264 proven. 53 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-14 22:01:29,088 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:01:29,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16 [2019-10-14 22:01:29,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37808482] [2019-10-14 22:01:29,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:01:29,090 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:01:29,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:01:29,091 INFO L87 Difference]: Start difference. First operand 2634 states and 3570 transitions. Second operand 16 states. [2019-10-14 22:01:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:33,158 INFO L93 Difference]: Finished difference Result 5572 states and 7555 transitions. [2019-10-14 22:01:33,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-14 22:01:33,158 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 320 [2019-10-14 22:01:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:33,173 INFO L225 Difference]: With dead ends: 5572 [2019-10-14 22:01:33,174 INFO L226 Difference]: Without dead ends: 3081 [2019-10-14 22:01:33,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=276, Invalid=914, Unknown=0, NotChecked=0, Total=1190 [2019-10-14 22:01:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2019-10-14 22:01:33,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 3010. [2019-10-14 22:01:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3010 states. [2019-10-14 22:01:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3718 transitions. [2019-10-14 22:01:33,287 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3718 transitions. Word has length 320 [2019-10-14 22:01:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:33,287 INFO L462 AbstractCegarLoop]: Abstraction has 3010 states and 3718 transitions. [2019-10-14 22:01:33,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:01:33,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3718 transitions. [2019-10-14 22:01:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2019-10-14 22:01:33,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:33,297 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:01:33,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:33,502 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:33,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1239300566, now seen corresponding path program 1 times [2019-10-14 22:01:33,503 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:33,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826439487] [2019-10-14 22:01:33,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:33,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:33,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 233 proven. 85 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-14 22:01:34,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826439487] [2019-10-14 22:01:34,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019241149] [2019-10-14 22:01:34,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:34,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 22:01:34,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:34,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 22:01:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-10-14 22:01:34,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:01:34,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-10-14 22:01:34,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102083265] [2019-10-14 22:01:34,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:01:34,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:34,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:01:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:01:34,493 INFO L87 Difference]: Start difference. First operand 3010 states and 3718 transitions. Second operand 5 states. [2019-10-14 22:01:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:35,573 INFO L93 Difference]: Finished difference Result 6214 states and 7832 transitions. [2019-10-14 22:01:35,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:01:35,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2019-10-14 22:01:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:35,594 INFO L225 Difference]: With dead ends: 6214 [2019-10-14 22:01:35,594 INFO L226 Difference]: Without dead ends: 3394 [2019-10-14 22:01:35,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-14 22:01:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2019-10-14 22:01:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3388. [2019-10-14 22:01:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3388 states. [2019-10-14 22:01:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4140 transitions. [2019-10-14 22:01:35,686 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4140 transitions. Word has length 345 [2019-10-14 22:01:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:35,686 INFO L462 AbstractCegarLoop]: Abstraction has 3388 states and 4140 transitions. [2019-10-14 22:01:35,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:01:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4140 transitions. [2019-10-14 22:01:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2019-10-14 22:01:35,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:35,698 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:01:35,902 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:35,903 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1989573846, now seen corresponding path program 1 times [2019-10-14 22:01:35,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:35,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810705684] [2019-10-14 22:01:35,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:35,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:35,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 402 proven. 72 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2019-10-14 22:01:36,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810705684] [2019-10-14 22:01:36,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122449017] [2019-10-14 22:01:36,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:37,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 22:01:37,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-10-14 22:01:37,265 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:01:37,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 9 [2019-10-14 22:01:37,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641803197] [2019-10-14 22:01:37,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:01:37,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:01:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:01:37,269 INFO L87 Difference]: Start difference. First operand 3388 states and 4140 transitions. Second operand 9 states. [2019-10-14 22:01:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:39,641 INFO L93 Difference]: Finished difference Result 7520 states and 9257 transitions. [2019-10-14 22:01:39,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 22:01:39,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 455 [2019-10-14 22:01:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:39,660 INFO L225 Difference]: With dead ends: 7520 [2019-10-14 22:01:39,660 INFO L226 Difference]: Without dead ends: 4322 [2019-10-14 22:01:39,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 468 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2019-10-14 22:01:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2019-10-14 22:01:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 4138. [2019-10-14 22:01:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4138 states. [2019-10-14 22:01:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 4908 transitions. [2019-10-14 22:01:39,765 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 4908 transitions. Word has length 455 [2019-10-14 22:01:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:39,766 INFO L462 AbstractCegarLoop]: Abstraction has 4138 states and 4908 transitions. [2019-10-14 22:01:39,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:01:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 4908 transitions. [2019-10-14 22:01:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2019-10-14 22:01:39,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:39,780 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:01:39,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:39,985 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:39,985 INFO L82 PathProgramCache]: Analyzing trace with hash -155868599, now seen corresponding path program 1 times [2019-10-14 22:01:39,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:39,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367286333] [2019-10-14 22:01:39,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:39,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:39,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 538 proven. 81 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-10-14 22:01:41,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367286333] [2019-10-14 22:01:41,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847364484] [2019-10-14 22:01:41,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:41,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 22:01:41,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2019-10-14 22:01:41,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:01:41,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-10-14 22:01:41,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173287071] [2019-10-14 22:01:41,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:01:41,652 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:41,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:01:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:01:41,652 INFO L87 Difference]: Start difference. First operand 4138 states and 4908 transitions. Second operand 3 states. [2019-10-14 22:01:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:42,309 INFO L93 Difference]: Finished difference Result 5784 states and 6808 transitions. [2019-10-14 22:01:42,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:01:42,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 540 [2019-10-14 22:01:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:42,336 INFO L225 Difference]: With dead ends: 5784 [2019-10-14 22:01:42,336 INFO L226 Difference]: Without dead ends: 5782 [2019-10-14 22:01:42,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 553 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:01:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2019-10-14 22:01:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 4322. [2019-10-14 22:01:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4322 states. [2019-10-14 22:01:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5134 transitions. [2019-10-14 22:01:42,467 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5134 transitions. Word has length 540 [2019-10-14 22:01:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:42,469 INFO L462 AbstractCegarLoop]: Abstraction has 4322 states and 5134 transitions. [2019-10-14 22:01:42,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:01:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5134 transitions. [2019-10-14 22:01:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2019-10-14 22:01:42,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:42,495 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2019-10-14 22:01:42,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:42,702 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1921617981, now seen corresponding path program 1 times [2019-10-14 22:01:42,702 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:42,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942556513] [2019-10-14 22:01:42,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:42,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:42,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 538 proven. 80 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2019-10-14 22:01:43,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942556513] [2019-10-14 22:01:43,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126668317] [2019-10-14 22:01:43,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:01:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:44,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-14 22:01:44,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:44,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-14 22:01:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 774 proven. 2 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2019-10-14 22:01:44,571 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:01:44,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 16 [2019-10-14 22:01:44,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877064636] [2019-10-14 22:01:44,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 22:01:44,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 22:01:44,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2019-10-14 22:01:44,574 INFO L87 Difference]: Start difference. First operand 4322 states and 5134 transitions. Second operand 16 states. [2019-10-14 22:01:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:47,409 INFO L93 Difference]: Finished difference Result 8777 states and 10443 transitions. [2019-10-14 22:01:47,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 22:01:47,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 560 [2019-10-14 22:01:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:47,429 INFO L225 Difference]: With dead ends: 8777 [2019-10-14 22:01:47,429 INFO L226 Difference]: Without dead ends: 4567 [2019-10-14 22:01:47,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2019-10-14 22:01:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2019-10-14 22:01:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4502. [2019-10-14 22:01:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4502 states. [2019-10-14 22:01:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 5106 transitions. [2019-10-14 22:01:47,531 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 5106 transitions. Word has length 560 [2019-10-14 22:01:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:47,532 INFO L462 AbstractCegarLoop]: Abstraction has 4502 states and 5106 transitions. [2019-10-14 22:01:47,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 22:01:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 5106 transitions. [2019-10-14 22:01:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2019-10-14 22:01:47,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:47,542 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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]