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/Problem13_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:49:34,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:49:34,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:49:34,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:49:34,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:49:34,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:49:34,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:49:34,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:49:34,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:49:34,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:49:34,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:49:34,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:49:34,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:49:34,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:49:34,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:49:34,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:49:34,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:49:34,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:49:34,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:49:34,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:49:34,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:49:34,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:49:34,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:49:34,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:49:34,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:49:34,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:49:34,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:49:34,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:49:34,836 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 [2019-09-07 19:49:34,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:49:34,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:49:34,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:49:34,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:49:34,852 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:49:34,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:49:34,852 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:49:34,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:49:34,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:49:34,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:49:34,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:49:34,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:49:34,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:49:34,854 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:49:34,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:49:34,854 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:49:34,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:49:34,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:49:34,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:49:34,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:49:34,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:49:34,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:49:34,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:49:34,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:49:34,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:49:34,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:49:34,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:49:34,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:49:34,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:49:34,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:49:34,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:49:34,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:49:34,901 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:49:34,902 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:49:34,902 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2019-09-07 19:49:34,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25734701/aee7d73c189b40af9d72759bc29d376f/FLAG1f42ca5ac [2019-09-07 19:49:35,754 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:49:35,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44.c [2019-09-07 19:49:35,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25734701/aee7d73c189b40af9d72759bc29d376f/FLAG1f42ca5ac [2019-09-07 19:49:35,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f25734701/aee7d73c189b40af9d72759bc29d376f [2019-09-07 19:49:35,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:49:35,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:49:35,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:49:35,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:49:35,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:49:35,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:49:35" (1/1) ... [2019-09-07 19:49:35,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fac6b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:35, skipping insertion in model container [2019-09-07 19:49:35,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:49:35" (1/1) ... [2019-09-07 19:49:35,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:49:36,070 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:49:37,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:49:37,655 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:49:38,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:49:38,451 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:49:38,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38 WrapperNode [2019-09-07 19:49:38,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:49:38,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:49:38,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:49:38,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:49:38,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (1/1) ... [2019-09-07 19:49:38,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:49:38,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:49:38,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:49:38,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:49:38,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (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 [2019-09-07 19:49:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:49:38,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:49:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:49:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:49:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:49:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:49:38,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:49:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:49:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:49:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:49:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:49:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:49:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:49:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:49:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:49:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:49:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:49:45,575 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:49:45,576 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:49:45,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:49:45 BoogieIcfgContainer [2019-09-07 19:49:45,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:49:45,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:49:45,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:49:45,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:49:45,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:49:35" (1/3) ... [2019-09-07 19:49:45,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6705ee49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:49:45, skipping insertion in model container [2019-09-07 19:49:45,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:49:38" (2/3) ... [2019-09-07 19:49:45,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6705ee49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:49:45, skipping insertion in model container [2019-09-07 19:49:45,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:49:45" (3/3) ... [2019-09-07 19:49:45,596 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label44.c [2019-09-07 19:49:45,609 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:49:45,621 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:49:45,638 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:49:45,699 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:49:45,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:49:45,700 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:49:45,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:49:45,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:49:45,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:49:45,701 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:49:45,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:49:45,701 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:49:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:49:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-07 19:49:45,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:45,753 INFO L399 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] [2019-09-07 19:49:45,755 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2097307521, now seen corresponding path program 1 times [2019-09-07 19:49:45,763 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:45,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:45,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:45,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:45,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:49:46,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:49:46,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:49:46,140 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:49:46,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:49:46,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:49:46,157 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 3 states. [2019-09-07 19:49:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:49:51,867 INFO L93 Difference]: Finished difference Result 3094 states and 5704 transitions. [2019-09-07 19:49:51,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:49:51,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-09-07 19:49:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:49:51,920 INFO L225 Difference]: With dead ends: 3094 [2019-09-07 19:49:51,920 INFO L226 Difference]: Without dead ends: 1913 [2019-09-07 19:49:51,938 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:49:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2019-09-07 19:49:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1912. [2019-09-07 19:49:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2019-09-07 19:49:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3141 transitions. [2019-09-07 19:49:52,102 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3141 transitions. Word has length 36 [2019-09-07 19:49:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:49:52,103 INFO L475 AbstractCegarLoop]: Abstraction has 1912 states and 3141 transitions. [2019-09-07 19:49:52,103 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:49:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3141 transitions. [2019-09-07 19:49:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-07 19:49:52,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:49:52,112 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:49:52,112 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:49:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:49:52,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1339916923, now seen corresponding path program 1 times [2019-09-07 19:49:52,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:49:52,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:49:52,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:52,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:49:52,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:49:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:49:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:49:52,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:49:52,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:49:52,331 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:49:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:49:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:49:52,331 INFO L87 Difference]: Start difference. First operand 1912 states and 3141 transitions. Second operand 5 states. [2019-09-07 19:50:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:01,229 INFO L93 Difference]: Finished difference Result 5589 states and 9299 transitions. [2019-09-07 19:50:01,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:50:01,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-09-07 19:50:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:01,263 INFO L225 Difference]: With dead ends: 5589 [2019-09-07 19:50:01,263 INFO L226 Difference]: Without dead ends: 3683 [2019-09-07 19:50:01,270 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:50:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2019-09-07 19:50:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3601. [2019-09-07 19:50:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3601 states. [2019-09-07 19:50:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5413 transitions. [2019-09-07 19:50:01,403 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5413 transitions. Word has length 111 [2019-09-07 19:50:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:01,406 INFO L475 AbstractCegarLoop]: Abstraction has 3601 states and 5413 transitions. [2019-09-07 19:50:01,406 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:50:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5413 transitions. [2019-09-07 19:50:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-07 19:50:01,418 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:01,419 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:50:01,419 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash 996074399, now seen corresponding path program 1 times [2019-09-07 19:50:01,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:01,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:01,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:01,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:01,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:50:01,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:50:01,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:50:01,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:50:01,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:50:01,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:50:01,584 INFO L87 Difference]: Start difference. First operand 3601 states and 5413 transitions. Second operand 5 states. [2019-09-07 19:50:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:13,628 INFO L93 Difference]: Finished difference Result 10903 states and 16895 transitions. [2019-09-07 19:50:13,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:50:13,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-09-07 19:50:13,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:13,673 INFO L225 Difference]: With dead ends: 10903 [2019-09-07 19:50:13,676 INFO L226 Difference]: Without dead ends: 7308 [2019-09-07 19:50:13,688 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:50:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2019-09-07 19:50:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 7121. [2019-09-07 19:50:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7121 states. [2019-09-07 19:50:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 10497 transitions. [2019-09-07 19:50:13,917 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 10497 transitions. Word has length 125 [2019-09-07 19:50:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:13,919 INFO L475 AbstractCegarLoop]: Abstraction has 7121 states and 10497 transitions. [2019-09-07 19:50:13,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:50:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 10497 transitions. [2019-09-07 19:50:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-07 19:50:13,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:13,922 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:50:13,922 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:13,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:13,922 INFO L82 PathProgramCache]: Analyzing trace with hash 531440955, now seen corresponding path program 1 times [2019-09-07 19:50:13,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:13,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:13,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:13,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:13,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:50:14,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:50:14,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:50:14,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:50:14,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:50:14,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:50:14,094 INFO L87 Difference]: Start difference. First operand 7121 states and 10497 transitions. Second operand 6 states. [2019-09-07 19:50:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:21,463 INFO L93 Difference]: Finished difference Result 21450 states and 33775 transitions. [2019-09-07 19:50:21,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:50:21,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-09-07 19:50:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:21,544 INFO L225 Difference]: With dead ends: 21450 [2019-09-07 19:50:21,544 INFO L226 Difference]: Without dead ends: 14335 [2019-09-07 19:50:21,566 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:50:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14335 states. [2019-09-07 19:50:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14335 to 14126. [2019-09-07 19:50:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14126 states. [2019-09-07 19:50:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14126 states to 14126 states and 21305 transitions. [2019-09-07 19:50:21,931 INFO L78 Accepts]: Start accepts. Automaton has 14126 states and 21305 transitions. Word has length 143 [2019-09-07 19:50:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:21,932 INFO L475 AbstractCegarLoop]: Abstraction has 14126 states and 21305 transitions. [2019-09-07 19:50:21,932 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:50:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 14126 states and 21305 transitions. [2019-09-07 19:50:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-07 19:50:21,934 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:21,934 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:50:21,935 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:21,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1437486933, now seen corresponding path program 1 times [2019-09-07 19:50:21,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:21,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:21,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:21,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:21,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:50:22,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:50:22,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:50:22,026 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:50:22,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:50:22,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:50:22,026 INFO L87 Difference]: Start difference. First operand 14126 states and 21305 transitions. Second operand 4 states. [2019-09-07 19:50:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:30,574 INFO L93 Difference]: Finished difference Result 41645 states and 66073 transitions. [2019-09-07 19:50:30,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:50:30,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-09-07 19:50:30,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:30,691 INFO L225 Difference]: With dead ends: 41645 [2019-09-07 19:50:30,691 INFO L226 Difference]: Without dead ends: 27525 [2019-09-07 19:50:30,734 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:50:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2019-09-07 19:50:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 27496. [2019-09-07 19:50:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27496 states. [2019-09-07 19:50:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27496 states to 27496 states and 40325 transitions. [2019-09-07 19:50:32,596 INFO L78 Accepts]: Start accepts. Automaton has 27496 states and 40325 transitions. Word has length 151 [2019-09-07 19:50:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:32,596 INFO L475 AbstractCegarLoop]: Abstraction has 27496 states and 40325 transitions. [2019-09-07 19:50:32,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:50:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27496 states and 40325 transitions. [2019-09-07 19:50:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-09-07 19:50:32,608 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:32,608 INFO L399 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, 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, 3, 3, 3, 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] [2019-09-07 19:50:32,608 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:32,609 INFO L82 PathProgramCache]: Analyzing trace with hash 830872219, now seen corresponding path program 1 times [2019-09-07 19:50:32,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:32,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:32,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:32,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:32,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 87 proven. 144 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 19:50:33,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:50:33,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:50:33,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:50:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:33,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:50:33,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:50:33,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:50:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 19:50:33,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:50:33,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:50:33,483 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:50:33,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:50:33,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:50:33,484 INFO L87 Difference]: Start difference. First operand 27496 states and 40325 transitions. Second operand 9 states. [2019-09-07 19:50:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:50:46,502 INFO L93 Difference]: Finished difference Result 57031 states and 86732 transitions. [2019-09-07 19:50:46,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 19:50:46,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2019-09-07 19:50:46,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:50:46,629 INFO L225 Difference]: With dead ends: 57031 [2019-09-07 19:50:46,629 INFO L226 Difference]: Without dead ends: 29541 [2019-09-07 19:50:46,685 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-09-07 19:50:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29541 states. [2019-09-07 19:50:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29541 to 29294. [2019-09-07 19:50:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29294 states. [2019-09-07 19:50:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29294 states to 29294 states and 45147 transitions. [2019-09-07 19:50:47,995 INFO L78 Accepts]: Start accepts. Automaton has 29294 states and 45147 transitions. Word has length 281 [2019-09-07 19:50:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:50:47,998 INFO L475 AbstractCegarLoop]: Abstraction has 29294 states and 45147 transitions. [2019-09-07 19:50:47,998 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:50:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29294 states and 45147 transitions. [2019-09-07 19:50:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-09-07 19:50:48,009 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:50:48,010 INFO L399 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, 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, 3, 3, 3, 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] [2019-09-07 19:50:48,010 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:50:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:50:48,011 INFO L82 PathProgramCache]: Analyzing trace with hash 566087413, now seen corresponding path program 1 times [2019-09-07 19:50:48,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:50:48,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:50:48,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:48,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:48,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:50:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 92 proven. 214 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 19:50:48,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:50:48,302 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:50:48,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:50:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:50:48,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:50:48,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:50:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-07 19:50:48,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:50:48,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 19:50:48,584 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:50:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:50:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:50:48,585 INFO L87 Difference]: Start difference. First operand 29294 states and 45147 transitions. Second operand 7 states. [2019-09-07 19:51:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:51:01,203 INFO L93 Difference]: Finished difference Result 94305 states and 181563 transitions. [2019-09-07 19:51:01,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:51:01,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2019-09-07 19:51:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:51:01,757 INFO L225 Difference]: With dead ends: 94305 [2019-09-07 19:51:01,758 INFO L226 Difference]: Without dead ends: 65820 [2019-09-07 19:51:01,877 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:51:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65820 states. [2019-09-07 19:51:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65820 to 65181. [2019-09-07 19:51:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65181 states. [2019-09-07 19:51:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65181 states to 65181 states and 103205 transitions. [2019-09-07 19:51:05,693 INFO L78 Accepts]: Start accepts. Automaton has 65181 states and 103205 transitions. Word has length 289 [2019-09-07 19:51:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:51:05,694 INFO L475 AbstractCegarLoop]: Abstraction has 65181 states and 103205 transitions. [2019-09-07 19:51:05,694 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:51:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 65181 states and 103205 transitions. [2019-09-07 19:51:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-09-07 19:51:05,705 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:51:05,705 INFO L399 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:51:05,705 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:51:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:51:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 87959004, now seen corresponding path program 1 times [2019-09-07 19:51:05,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:51:05,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:51:05,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:05,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:05,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-09-07 19:51:05,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:51:05,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:51:05,946 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:51:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:51:05,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:51:05,947 INFO L87 Difference]: Start difference. First operand 65181 states and 103205 transitions. Second operand 4 states. [2019-09-07 19:51:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:51:10,507 INFO L93 Difference]: Finished difference Result 120510 states and 194803 transitions. [2019-09-07 19:51:10,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:51:10,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2019-09-07 19:51:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:51:10,777 INFO L225 Difference]: With dead ends: 120510 [2019-09-07 19:51:10,777 INFO L226 Difference]: Without dead ends: 65156 [2019-09-07 19:51:10,917 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:51:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65156 states. [2019-09-07 19:51:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65156 to 65153. [2019-09-07 19:51:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65153 states. [2019-09-07 19:51:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65153 states to 65153 states and 103016 transitions. [2019-09-07 19:51:12,494 INFO L78 Accepts]: Start accepts. Automaton has 65153 states and 103016 transitions. Word has length 331 [2019-09-07 19:51:12,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:51:12,494 INFO L475 AbstractCegarLoop]: Abstraction has 65153 states and 103016 transitions. [2019-09-07 19:51:12,494 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:51:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 65153 states and 103016 transitions. [2019-09-07 19:51:12,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-09-07 19:51:12,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:51:12,506 INFO L399 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, 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, 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] [2019-09-07 19:51:12,506 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:51:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:51:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1978183207, now seen corresponding path program 1 times [2019-09-07 19:51:12,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:51:12,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:51:12,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:12,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:12,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 23 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-07 19:51:12,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:51:12,821 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:51:12,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:12,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:51:12,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:51:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:51:13,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:51:13,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:51:13,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:51:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:51:13,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:51:13,053 INFO L87 Difference]: Start difference. First operand 65153 states and 103016 transitions. Second operand 9 states. [2019-09-07 19:51:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:51:25,478 INFO L93 Difference]: Finished difference Result 181820 states and 320349 transitions. [2019-09-07 19:51:25,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 19:51:25,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 340 [2019-09-07 19:51:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:51:25,955 INFO L225 Difference]: With dead ends: 181820 [2019-09-07 19:51:25,955 INFO L226 Difference]: Without dead ends: 117476 [2019-09-07 19:51:26,170 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:51:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117476 states. [2019-09-07 19:51:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117476 to 108303. [2019-09-07 19:51:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108303 states. [2019-09-07 19:51:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108303 states to 108303 states and 168629 transitions. [2019-09-07 19:51:30,887 INFO L78 Accepts]: Start accepts. Automaton has 108303 states and 168629 transitions. Word has length 340 [2019-09-07 19:51:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:51:30,887 INFO L475 AbstractCegarLoop]: Abstraction has 108303 states and 168629 transitions. [2019-09-07 19:51:30,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:51:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 108303 states and 168629 transitions. [2019-09-07 19:51:30,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2019-09-07 19:51:30,902 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:51:30,902 INFO L399 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, 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, 4, 4, 4, 3, 3, 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] [2019-09-07 19:51:30,902 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:51:30,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:51:30,903 INFO L82 PathProgramCache]: Analyzing trace with hash 791725813, now seen corresponding path program 1 times [2019-09-07 19:51:30,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:51:30,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:51:30,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:30,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:30,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:51:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 174 proven. 341 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 19:51:32,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:51:32,233 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:51:32,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:51:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:51:32,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:51:32,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:51:32,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:51:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 451 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 19:51:32,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:51:32,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 23 [2019-09-07 19:51:32,697 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 19:51:32,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 19:51:32,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:51:32,698 INFO L87 Difference]: Start difference. First operand 108303 states and 168629 transitions. Second operand 23 states. [2019-09-07 19:51:59,017 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-09-07 19:52:00,578 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-09-07 19:52:09,805 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2019-09-07 19:52:21,642 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-07 19:52:24,211 WARN L188 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-07 19:52:40,644 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2019-09-07 19:52:42,206 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-07 19:52:42,517 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-07 19:52:54,704 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 19:53:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:53:50,593 INFO L93 Difference]: Finished difference Result 345028 states and 581092 transitions. [2019-09-07 19:53:50,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2019-09-07 19:53:50,594 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 381 [2019-09-07 19:53:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:53:51,418 INFO L225 Difference]: With dead ends: 345028 [2019-09-07 19:53:51,419 INFO L226 Difference]: Without dead ends: 234042 [2019-09-07 19:53:51,598 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27540 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=7717, Invalid=56545, Unknown=0, NotChecked=0, Total=64262 [2019-09-07 19:53:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234042 states. [2019-09-07 19:53:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234042 to 225871. [2019-09-07 19:53:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225871 states. [2019-09-07 19:53:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225871 states to 225871 states and 352564 transitions. [2019-09-07 19:53:56,010 INFO L78 Accepts]: Start accepts. Automaton has 225871 states and 352564 transitions. Word has length 381 [2019-09-07 19:53:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:53:56,011 INFO L475 AbstractCegarLoop]: Abstraction has 225871 states and 352564 transitions. [2019-09-07 19:53:56,011 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 19:53:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 225871 states and 352564 transitions. [2019-09-07 19:53:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2019-09-07 19:53:56,017 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:53:56,018 INFO L399 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:53:56,018 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:53:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:53:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1504265318, now seen corresponding path program 1 times [2019-09-07 19:53:56,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:53:56,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:53:56,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:53:56,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:53:56,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:53:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-09-07 19:54:00,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:54:00,930 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:54:00,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:54:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:01,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:54:01,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:54:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-09-07 19:54:01,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:54:01,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-09-07 19:54:01,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:54:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:54:01,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:54:01,191 INFO L87 Difference]: Start difference. First operand 225871 states and 352564 transitions. Second operand 6 states. [2019-09-07 19:54:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:54:13,890 INFO L93 Difference]: Finished difference Result 542215 states and 830317 transitions. [2019-09-07 19:54:13,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:54:13,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 527 [2019-09-07 19:54:13,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:54:14,949 INFO L225 Difference]: With dead ends: 542215 [2019-09-07 19:54:14,949 INFO L226 Difference]: Without dead ends: 316376 [2019-09-07 19:54:15,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:54:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316376 states. [2019-09-07 19:54:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316376 to 304278. [2019-09-07 19:54:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304278 states. [2019-09-07 19:54:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304278 states to 304278 states and 426386 transitions. [2019-09-07 19:54:32,213 INFO L78 Accepts]: Start accepts. Automaton has 304278 states and 426386 transitions. Word has length 527 [2019-09-07 19:54:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:54:32,214 INFO L475 AbstractCegarLoop]: Abstraction has 304278 states and 426386 transitions. [2019-09-07 19:54:32,214 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:54:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 304278 states and 426386 transitions. [2019-09-07 19:54:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2019-09-07 19:54:32,225 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:54:32,226 INFO L399 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, 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:54:32,226 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:54:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:54:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash -848631239, now seen corresponding path program 1 times [2019-09-07 19:54:32,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:54:32,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:54:32,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:54:32,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:54:32,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:54:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 269 proven. 191 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-09-07 19:54:32,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:54:32,839 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:54:33,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:54:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:54:33,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:54:33,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:54:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-09-07 19:54:34,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:54:34,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 19:54:34,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:54:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:54:34,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:54:34,307 INFO L87 Difference]: Start difference. First operand 304278 states and 426386 transitions. Second operand 11 states. [2019-09-07 19:54:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:54:55,346 INFO L93 Difference]: Finished difference Result 671035 states and 929114 transitions. [2019-09-07 19:54:55,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:54:55,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 617 [2019-09-07 19:54:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:54:56,346 INFO L225 Difference]: With dead ends: 671035 [2019-09-07 19:54:56,346 INFO L226 Difference]: Without dead ends: 367750 [2019-09-07 19:55:01,715 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 624 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2019-09-07 19:55:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367750 states. [2019-09-07 19:55:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367750 to 345992. [2019-09-07 19:55:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345992 states. [2019-09-07 19:55:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345992 states to 345992 states and 444635 transitions. [2019-09-07 19:55:08,611 INFO L78 Accepts]: Start accepts. Automaton has 345992 states and 444635 transitions. Word has length 617 [2019-09-07 19:55:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:55:08,613 INFO L475 AbstractCegarLoop]: Abstraction has 345992 states and 444635 transitions. [2019-09-07 19:55:08,613 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:55:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 345992 states and 444635 transitions. [2019-09-07 19:55:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2019-09-07 19:55:08,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:55:08,630 INFO L399 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, 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, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:55:08,631 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:55:08,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:55:08,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1277052026, now seen corresponding path program 1 times [2019-09-07 19:55:08,632 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:55:08,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:55:08,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:55:08,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:55:08,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:55:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:55:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 106 proven. 409 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 19:55:10,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:55:10,637 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:55:10,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:55:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:55:10,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 19:55:10,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:55:10,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:55:10,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:55:13,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:55:16,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:55:17,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:55:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 451 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 19:55:23,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:55:23,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 22 [2019-09-07 19:55:23,113 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 19:55:23,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 19:55:23,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=393, Unknown=2, NotChecked=0, Total=462 [2019-09-07 19:55:23,114 INFO L87 Difference]: Start difference. First operand 345992 states and 444635 transitions. Second operand 22 states. [2019-09-07 19:55:31,712 WARN L188 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2019-09-07 19:55:53,275 WARN L188 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2019-09-07 19:56:07,366 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2019-09-07 19:56:20,417 WARN L188 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 56 DAG size of output: 30 [2019-09-07 19:56:26,282 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2019-09-07 19:56:39,142 WARN L188 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2019-09-07 19:56:55,175 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2019-09-07 19:57:11,160 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 19:57:14,572 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-07 19:57:24,360 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2019-09-07 19:57:53,799 WARN L188 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2019-09-07 19:58:11,276 WARN L188 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-07 19:58:36,945 WARN L188 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2019-09-07 19:59:27,648 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2019-09-07 19:59:37,700 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-07 19:59:43,029 WARN L188 SmtUtils]: Spent 5.23 s on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2019-09-07 19:59:56,623 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2019-09-07 20:00:19,479 WARN L188 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 51 DAG size of output: 25 [2019-09-07 20:02:14,783 WARN L188 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2019-09-07 20:02:30,108 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57