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/Problem19_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:30:38,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:30:38,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:30:38,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:30:38,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:30:38,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:30:38,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:30:38,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:30:38,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:30:38,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:30:38,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:30:38,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:30:38,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:30:38,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:30:38,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:30:38,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:30:38,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:30:38,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:30:38,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:30:38,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:30:38,720 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 23:30:38,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:30:38,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:30:38,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:30:38,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:30:38,748 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:30:38,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:30:38,749 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:30:38,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:30:38,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:30:38,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:30:38,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:30:38,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:30:38,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:30:38,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:30:38,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:30:38,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:30:38,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:30:38,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:30:38,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:30:38,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:30:38,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:30:38,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:30:38,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:30:38,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:30:38,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:30:38,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:30:38,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:30:38,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:30:38,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:30:38,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:30:38,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:30:38,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:30:38,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:30:38,810 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:30:38,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55.c [2019-09-07 23:30:38,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e519b74f/a8ce931f5bcd4ea8a0d7c1e88abbde5e/FLAG9dd2cbf4d [2019-09-07 23:30:39,727 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:30:39,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label55.c [2019-09-07 23:30:39,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e519b74f/a8ce931f5bcd4ea8a0d7c1e88abbde5e/FLAG9dd2cbf4d [2019-09-07 23:30:40,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e519b74f/a8ce931f5bcd4ea8a0d7c1e88abbde5e [2019-09-07 23:30:40,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:30:40,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:30:40,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:30:40,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:30:40,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:30:40,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:30:40" (1/1) ... [2019-09-07 23:30:40,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785c94e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:40, skipping insertion in model container [2019-09-07 23:30:40,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:30:40" (1/1) ... [2019-09-07 23:30:40,196 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:30:40,512 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:30:42,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:30:42,812 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:30:44,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:30:44,087 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:30:44,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44 WrapperNode [2019-09-07 23:30:44,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:30:44,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:30:44,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:30:44,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:30:44,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (1/1) ... [2019-09-07 23:30:44,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:30:44,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:30:44,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:30:44,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:30:44,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (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 23:30:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:30:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:30:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:30:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:30:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:30:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:30:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:30:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:30:44,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:30:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:30:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:30:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:30:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:30:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:30:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:30:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:30:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:30:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:30:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:30:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:30:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:30:56,154 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:30:56,154 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:30:56,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:30:56 BoogieIcfgContainer [2019-09-07 23:30:56,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:30:56,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:30:56,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:30:56,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:30:56,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:30:40" (1/3) ... [2019-09-07 23:30:56,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d28821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:30:56, skipping insertion in model container [2019-09-07 23:30:56,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:30:44" (2/3) ... [2019-09-07 23:30:56,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d28821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:30:56, skipping insertion in model container [2019-09-07 23:30:56,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:30:56" (3/3) ... [2019-09-07 23:30:56,177 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label55.c [2019-09-07 23:30:56,189 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:30:56,205 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:30:56,228 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:30:56,294 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:30:56,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:30:56,295 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:30:56,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:30:56,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:30:56,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:30:56,296 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:30:56,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:30:56,296 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:30:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:30:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-07 23:30:56,359 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:30:56,360 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] [2019-09-07 23:30:56,362 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:30:56,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:30:56,368 INFO L82 PathProgramCache]: Analyzing trace with hash -775038598, now seen corresponding path program 1 times [2019-09-07 23:30:56,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:30:56,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:30:56,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:56,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:56,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:56,644 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 23:30:56,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:30:56,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:30:56,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:30:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:30:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:30:56,669 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:31:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:31:07,997 INFO L93 Difference]: Finished difference Result 4995 states and 9414 transitions. [2019-09-07 23:31:08,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:31:08,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-09-07 23:31:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:31:08,059 INFO L225 Difference]: With dead ends: 4995 [2019-09-07 23:31:08,059 INFO L226 Difference]: Without dead ends: 3156 [2019-09-07 23:31:08,070 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 23:31:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2019-09-07 23:31:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3153. [2019-09-07 23:31:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-07 23:31:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5691 transitions. [2019-09-07 23:31:08,269 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5691 transitions. Word has length 20 [2019-09-07 23:31:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:31:08,270 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5691 transitions. [2019-09-07 23:31:08,271 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:31:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5691 transitions. [2019-09-07 23:31:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-09-07 23:31:08,278 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:31:08,279 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:31:08,279 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:31:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:31:08,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1178147687, now seen corresponding path program 1 times [2019-09-07 23:31:08,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:31:08,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:31:08,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:08,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:31:08,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:31:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:31:08,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:31:08,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:31:08,556 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:31:08,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:31:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:31:08,557 INFO L87 Difference]: Start difference. First operand 3153 states and 5691 transitions. Second operand 6 states. [2019-09-07 23:31:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:31:24,121 INFO L93 Difference]: Finished difference Result 7845 states and 14066 transitions. [2019-09-07 23:31:24,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:31:24,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2019-09-07 23:31:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:31:24,149 INFO L225 Difference]: With dead ends: 7845 [2019-09-07 23:31:24,150 INFO L226 Difference]: Without dead ends: 4698 [2019-09-07 23:31:24,159 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 23:31:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2019-09-07 23:31:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4645. [2019-09-07 23:31:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2019-09-07 23:31:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7795 transitions. [2019-09-07 23:31:24,287 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7795 transitions. Word has length 91 [2019-09-07 23:31:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:31:24,288 INFO L475 AbstractCegarLoop]: Abstraction has 4645 states and 7795 transitions. [2019-09-07 23:31:24,288 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:31:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7795 transitions. [2019-09-07 23:31:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-07 23:31:24,299 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:31:24,300 INFO L399 BasicCegarLoop]: trace histogram [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 23:31:24,300 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:31:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:31:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 737075260, now seen corresponding path program 1 times [2019-09-07 23:31:24,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:31:24,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:31:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:24,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:31:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:31:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:31:24,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:31:24,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:31:24,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:31:24,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:31:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:31:24,450 INFO L87 Difference]: Start difference. First operand 4645 states and 7795 transitions. Second operand 6 states. [2019-09-07 23:31:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:31:40,815 INFO L93 Difference]: Finished difference Result 13954 states and 23756 transitions. [2019-09-07 23:31:40,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:31:40,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-09-07 23:31:40,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:31:40,872 INFO L225 Difference]: With dead ends: 13954 [2019-09-07 23:31:40,880 INFO L226 Difference]: Without dead ends: 9315 [2019-09-07 23:31:40,894 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 23:31:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2019-09-07 23:31:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 9121. [2019-09-07 23:31:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9121 states. [2019-09-07 23:31:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 15295 transitions. [2019-09-07 23:31:41,213 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 15295 transitions. Word has length 93 [2019-09-07 23:31:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:31:41,216 INFO L475 AbstractCegarLoop]: Abstraction has 9121 states and 15295 transitions. [2019-09-07 23:31:41,217 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:31:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 15295 transitions. [2019-09-07 23:31:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-07 23:31:41,221 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:31:41,221 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:31:41,222 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:31:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:31:41,222 INFO L82 PathProgramCache]: Analyzing trace with hash 353604699, now seen corresponding path program 1 times [2019-09-07 23:31:41,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:31:41,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:31:41,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:41,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:31:41,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:31:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:31:41,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:31:41,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:31:41,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:31:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:31:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:31:41,463 INFO L87 Difference]: Start difference. First operand 9121 states and 15295 transitions. Second operand 6 states. [2019-09-07 23:32:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:08,999 INFO L93 Difference]: Finished difference Result 35957 states and 63876 transitions. [2019-09-07 23:32:08,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:32:09,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2019-09-07 23:32:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:09,141 INFO L225 Difference]: With dead ends: 35957 [2019-09-07 23:32:09,141 INFO L226 Difference]: Without dead ends: 26842 [2019-09-07 23:32:09,169 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:32:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26842 states. [2019-09-07 23:32:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26842 to 26785. [2019-09-07 23:32:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26785 states. [2019-09-07 23:32:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26785 states to 26785 states and 42356 transitions. [2019-09-07 23:32:09,998 INFO L78 Accepts]: Start accepts. Automaton has 26785 states and 42356 transitions. Word has length 115 [2019-09-07 23:32:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:09,998 INFO L475 AbstractCegarLoop]: Abstraction has 26785 states and 42356 transitions. [2019-09-07 23:32:09,998 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:32:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 26785 states and 42356 transitions. [2019-09-07 23:32:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-07 23:32:10,001 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:10,001 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:32:10,001 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2058777289, now seen corresponding path program 1 times [2019-09-07 23:32:10,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:10,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:10,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:10,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:10,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:10,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:10,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:32:10,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:32:10,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:32:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:32:10,182 INFO L87 Difference]: Start difference. First operand 26785 states and 42356 transitions. Second operand 5 states. [2019-09-07 23:32:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:26,134 INFO L93 Difference]: Finished difference Result 81280 states and 138344 transitions. [2019-09-07 23:32:26,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:32:26,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-09-07 23:32:26,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:26,383 INFO L225 Difference]: With dead ends: 81280 [2019-09-07 23:32:26,384 INFO L226 Difference]: Without dead ends: 54501 [2019-09-07 23:32:26,460 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 23:32:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54501 states. [2019-09-07 23:32:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54501 to 53944. [2019-09-07 23:32:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53944 states. [2019-09-07 23:32:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53944 states to 53944 states and 80603 transitions. [2019-09-07 23:32:29,851 INFO L78 Accepts]: Start accepts. Automaton has 53944 states and 80603 transitions. Word has length 124 [2019-09-07 23:32:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:29,851 INFO L475 AbstractCegarLoop]: Abstraction has 53944 states and 80603 transitions. [2019-09-07 23:32:29,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:32:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 53944 states and 80603 transitions. [2019-09-07 23:32:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-09-07 23:32:29,854 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:29,854 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:32:29,854 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 759864600, now seen corresponding path program 1 times [2019-09-07 23:32:29,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:29,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:29,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:29,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:29,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:30,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:30,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:32:30,031 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:32:30,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:32:30,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:32:30,032 INFO L87 Difference]: Start difference. First operand 53944 states and 80603 transitions. Second operand 6 states. [2019-09-07 23:32:45,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:45,048 INFO L93 Difference]: Finished difference Result 124814 states and 196113 transitions. [2019-09-07 23:32:45,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:32:45,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2019-09-07 23:32:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:45,371 INFO L225 Difference]: With dead ends: 124814 [2019-09-07 23:32:45,372 INFO L226 Difference]: Without dead ends: 70876 [2019-09-07 23:32:45,468 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 23:32:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70876 states. [2019-09-07 23:32:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70876 to 70649. [2019-09-07 23:32:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70649 states. [2019-09-07 23:32:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70649 states to 70649 states and 104478 transitions. [2019-09-07 23:32:47,094 INFO L78 Accepts]: Start accepts. Automaton has 70649 states and 104478 transitions. Word has length 152 [2019-09-07 23:32:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:47,100 INFO L475 AbstractCegarLoop]: Abstraction has 70649 states and 104478 transitions. [2019-09-07 23:32:47,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:32:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 70649 states and 104478 transitions. [2019-09-07 23:32:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-07 23:32:47,106 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:47,107 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:47,110 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:47,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:47,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1386765054, now seen corresponding path program 1 times [2019-09-07 23:32:47,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:47,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:47,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:47,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:47,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:32:47,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:32:47,738 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 23:32:47,754 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 23:32:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:47,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:32:47,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:32:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 23:32:47,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:32:47,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:32:47,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:32:47,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:32:47,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:32:47,915 INFO L87 Difference]: Start difference. First operand 70649 states and 104478 transitions. Second operand 7 states. [2019-09-07 23:33:11,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:33:11,879 INFO L93 Difference]: Finished difference Result 192441 states and 304009 transitions. [2019-09-07 23:33:11,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:33:11,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-09-07 23:33:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:33:12,524 INFO L225 Difference]: With dead ends: 192441 [2019-09-07 23:33:12,525 INFO L226 Difference]: Without dead ends: 121798 [2019-09-07 23:33:15,674 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:33:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121798 states. [2019-09-07 23:33:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121798 to 118705. [2019-09-07 23:33:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118705 states. [2019-09-07 23:33:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118705 states to 118705 states and 163323 transitions. [2019-09-07 23:33:19,785 INFO L78 Accepts]: Start accepts. Automaton has 118705 states and 163323 transitions. Word has length 189 [2019-09-07 23:33:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:33:19,786 INFO L475 AbstractCegarLoop]: Abstraction has 118705 states and 163323 transitions. [2019-09-07 23:33:19,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:33:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 118705 states and 163323 transitions. [2019-09-07 23:33:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-09-07 23:33:19,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:33:19,794 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:19,794 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:33:19,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:33:19,795 INFO L82 PathProgramCache]: Analyzing trace with hash 964969176, now seen corresponding path program 1 times [2019-09-07 23:33:19,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:33:19,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:33:19,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:19,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:19,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 26 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:33:20,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:33:20,614 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) [2019-09-07 23:33:20,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:33:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:20,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:33:20,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:33:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 23:33:20,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:33:20,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:33:20,808 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:33:20,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:33:20,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:33:20,809 INFO L87 Difference]: Start difference. First operand 118705 states and 163323 transitions. Second operand 7 states. [2019-09-07 23:33:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:33:52,805 INFO L93 Difference]: Finished difference Result 432644 states and 634159 transitions. [2019-09-07 23:33:52,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 23:33:52,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2019-09-07 23:33:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:33:58,322 INFO L225 Difference]: With dead ends: 432644 [2019-09-07 23:33:58,322 INFO L226 Difference]: Without dead ends: 313945 [2019-09-07 23:33:58,506 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 23:33:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313945 states. [2019-09-07 23:34:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313945 to 282769. [2019-09-07 23:34:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282769 states. [2019-09-07 23:34:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282769 states to 282769 states and 384535 transitions. [2019-09-07 23:34:03,875 INFO L78 Accepts]: Start accepts. Automaton has 282769 states and 384535 transitions. Word has length 224 [2019-09-07 23:34:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:34:03,875 INFO L475 AbstractCegarLoop]: Abstraction has 282769 states and 384535 transitions. [2019-09-07 23:34:03,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:34:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 282769 states and 384535 transitions. [2019-09-07 23:34:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2019-09-07 23:34:03,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:34:03,950 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:03,950 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:34:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:34:03,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1955935333, now seen corresponding path program 1 times [2019-09-07 23:34:03,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:34:03,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:34:03,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:03,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:03,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 740 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2019-09-07 23:34:07,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:34:07,360 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 23:34:07,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:07,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 23:34:07,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:34:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 833 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-09-07 23:34:12,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:34:12,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-09-07 23:34:12,744 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:34:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:34:12,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:34:12,745 INFO L87 Difference]: Start difference. First operand 282769 states and 384535 transitions. Second operand 9 states. [2019-09-07 23:34:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:34:49,311 INFO L93 Difference]: Finished difference Result 707244 states and 979259 transitions. [2019-09-07 23:34:49,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:34:49,312 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1201 [2019-09-07 23:34:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:34:51,533 INFO L225 Difference]: With dead ends: 707244 [2019-09-07 23:34:51,533 INFO L226 Difference]: Without dead ends: 424481 [2019-09-07 23:34:51,795 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1211 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2019-09-07 23:34:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424481 states. [2019-09-07 23:35:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424481 to 417851. [2019-09-07 23:35:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417851 states. [2019-09-07 23:35:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417851 states to 417851 states and 542058 transitions. [2019-09-07 23:35:05,527 INFO L78 Accepts]: Start accepts. Automaton has 417851 states and 542058 transitions. Word has length 1201 [2019-09-07 23:35:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:35:05,529 INFO L475 AbstractCegarLoop]: Abstraction has 417851 states and 542058 transitions. [2019-09-07 23:35:05,529 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:35:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 417851 states and 542058 transitions. [2019-09-07 23:35:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2019-09-07 23:35:05,618 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:35:05,619 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2019-09-07 23:35:05,619 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:35:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:35:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1084124211, now seen corresponding path program 1 times [2019-09-07 23:35:05,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:35:05,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:35:05,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:05,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:35:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:35:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1627 backedges. 410 proven. 265 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2019-09-07 23:35:12,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:35:12,789 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 23:35:12,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:35:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:35:13,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:35:13,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:35:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1627 backedges. 1283 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-09-07 23:35:13,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:35:13,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:35:13,756 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:35:13,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:35:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:35:13,756 INFO L87 Difference]: Start difference. First operand 417851 states and 542058 transitions. Second operand 9 states. [2019-09-07 23:35:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:35:55,551 INFO L93 Difference]: Finished difference Result 1031368 states and 1437336 transitions. [2019-09-07 23:35:55,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:35:55,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1230 [2019-09-07 23:35:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:35:57,741 INFO L225 Difference]: With dead ends: 1031368 [2019-09-07 23:35:57,741 INFO L226 Difference]: Without dead ends: 613523 [2019-09-07 23:35:59,766 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1237 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:36:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613523 states. [2019-09-07 23:36:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613523 to 597141. [2019-09-07 23:36:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597141 states. [2019-09-07 23:36:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597141 states to 597141 states and 799749 transitions. [2019-09-07 23:36:34,620 INFO L78 Accepts]: Start accepts. Automaton has 597141 states and 799749 transitions. Word has length 1230 [2019-09-07 23:36:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:36:34,622 INFO L475 AbstractCegarLoop]: Abstraction has 597141 states and 799749 transitions. [2019-09-07 23:36:34,622 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:36:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 597141 states and 799749 transitions. [2019-09-07 23:36:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2019-09-07 23:36:34,679 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:36:34,682 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:34,682 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:36:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:36:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1221346601, now seen corresponding path program 1 times [2019-09-07 23:36:34,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:36:34,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:36:34,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:36:34,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:36:34,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:36:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:36:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 602 proven. 639 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2019-09-07 23:36:44,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:36:44,759 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 23:36:44,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:36:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:36:45,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:36:45,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:36:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 1218 proven. 2 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2019-09-07 23:36:46,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:36:46,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 18 [2019-09-07 23:36:46,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 23:36:46,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 23:36:46,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:36:46,282 INFO L87 Difference]: Start difference. First operand 597141 states and 799749 transitions. Second operand 18 states. [2019-09-07 23:37:37,680 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2019-09-07 23:37:51,188 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-07 23:38:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:38:49,131 INFO L93 Difference]: Finished difference Result 1739448 states and 2423819 transitions. [2019-09-07 23:38:49,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2019-09-07 23:38:49,131 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1245 [2019-09-07 23:38:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:38:52,880 INFO L225 Difference]: With dead ends: 1739448 [2019-09-07 23:38:52,881 INFO L226 Difference]: Without dead ends: 1090074 [2019-09-07 23:38:53,916 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1409 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18327 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5000, Invalid=37230, Unknown=0, NotChecked=0, Total=42230 [2019-09-07 23:38:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090074 states. [2019-09-07 23:39:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090074 to 1022265. [2019-09-07 23:39:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022265 states. [2019-09-07 23:39:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022265 states to 1022265 states and 1187671 transitions. [2019-09-07 23:39:48,329 INFO L78 Accepts]: Start accepts. Automaton has 1022265 states and 1187671 transitions. Word has length 1245 [2019-09-07 23:39:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:39:48,330 INFO L475 AbstractCegarLoop]: Abstraction has 1022265 states and 1187671 transitions. [2019-09-07 23:39:48,331 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 23:39:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1022265 states and 1187671 transitions. [2019-09-07 23:39:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2019-09-07 23:39:48,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:39:48,361 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:48,361 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:39:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:39:48,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1173579366, now seen corresponding path program 1 times [2019-09-07 23:39:48,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:39:48,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:39:48,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:39:48,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:39:48,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:39:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:39:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2019-09-07 23:39:51,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:39:51,938 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 23:39:51,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:39:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:39:52,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:39:52,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:39:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2019-09-07 23:39:54,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:39:54,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:39:54,051 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:39:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:39:54,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:39:54,051 INFO L87 Difference]: Start difference. First operand 1022265 states and 1187671 transitions. Second operand 9 states.