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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:16:43,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:16:43,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:16:43,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:16:43,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:16:43,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:16:43,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:16:43,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:16:43,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:16:43,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:16:43,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:16:43,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:16:43,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:16:43,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:16:43,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:16:43,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:16:43,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:16:43,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:16:43,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:16:43,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:16:43,658 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 23:16:43,672 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:16:43,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:16:43,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:16:43,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:16:43,673 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:16:43,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:16:43,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:16:43,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:16:43,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:16:43,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:16:43,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:16:43,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:16:43,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:16:43,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:16:43,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:16:43,676 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:16:43,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:16:43,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:16:43,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:16:43,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:16:43,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:16:43,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:16:43,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:16:43,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:16:43,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:16:43,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:16:43,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:16:43,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:16:43,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:16:43,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:16:43,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:16:43,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:16:43,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:16:43,729 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:16:43,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2019-09-07 23:16:43,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54aa2d97b/fc0231baded84d0c9399459b798c7c8d/FLAGe1ff461cf [2019-09-07 23:16:44,710 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:16:44,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label38.c [2019-09-07 23:16:44,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54aa2d97b/fc0231baded84d0c9399459b798c7c8d/FLAGe1ff461cf [2019-09-07 23:16:45,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54aa2d97b/fc0231baded84d0c9399459b798c7c8d [2019-09-07 23:16:45,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:16:45,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:16:45,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:16:45,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:16:45,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:16:45,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:16:45" (1/1) ... [2019-09-07 23:16:45,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74acbc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:45, skipping insertion in model container [2019-09-07 23:16:45,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:16:45" (1/1) ... [2019-09-07 23:16:45,160 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:16:45,473 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:16:47,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:16:47,762 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:16:48,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:16:48,934 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:16:48,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48 WrapperNode [2019-09-07 23:16:48,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:16:48,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:16:48,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:16:48,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:16:48,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:48,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (1/1) ... [2019-09-07 23:16:49,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:16:49,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:16:49,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:16:49,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:16:49,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (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 23:16:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:16:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:16:49,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:16:49,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:16:49,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:16:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:16:49,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:16:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:16:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:16:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:16:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:16:49,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:16:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:16:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:16:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:16:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:16:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:17:00,997 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:17:00,997 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:17:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:17:00 BoogieIcfgContainer [2019-09-07 23:17:01,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:17:01,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:17:01,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:17:01,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:17:01,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:16:45" (1/3) ... [2019-09-07 23:17:01,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a20d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:17:01, skipping insertion in model container [2019-09-07 23:17:01,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:16:48" (2/3) ... [2019-09-07 23:17:01,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a20d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:17:01, skipping insertion in model container [2019-09-07 23:17:01,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:17:00" (3/3) ... [2019-09-07 23:17:01,021 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label38.c [2019-09-07 23:17:01,042 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:17:01,056 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:17:01,082 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:17:01,162 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:17:01,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:17:01,164 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:17:01,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:17:01,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:17:01,165 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:17:01,165 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:17:01,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:17:01,165 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:17:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:17:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-07 23:17:01,259 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:01,261 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, 1, 1, 1, 1, 1, 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 23:17:01,264 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:01,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1148667028, now seen corresponding path program 1 times [2019-09-07 23:17:01,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:01,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:01,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:01,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:01,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:01,928 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 23:17:01,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:17:01,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:17:01,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:17:01,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:17:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:17:01,952 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:17:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:13,104 INFO L93 Difference]: Finished difference Result 4996 states and 9417 transitions. [2019-09-07 23:17:13,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:17:13,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-07 23:17:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:13,149 INFO L225 Difference]: With dead ends: 4996 [2019-09-07 23:17:13,150 INFO L226 Difference]: Without dead ends: 3157 [2019-09-07 23:17:13,161 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 23:17:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2019-09-07 23:17:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3153. [2019-09-07 23:17:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-07 23:17:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5682 transitions. [2019-09-07 23:17:13,359 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5682 transitions. Word has length 65 [2019-09-07 23:17:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:13,361 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5682 transitions. [2019-09-07 23:17:13,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:17:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5682 transitions. [2019-09-07 23:17:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-07 23:17:13,376 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:13,376 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, 2, 2, 2, 2, 2, 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] [2019-09-07 23:17:13,377 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash -33396098, now seen corresponding path program 1 times [2019-09-07 23:17:13,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:13,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:13,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:13,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:13,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:17:13,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:17:13,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:17:13,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:17:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:17:13,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:17:13,641 INFO L87 Difference]: Start difference. First operand 3153 states and 5682 transitions. Second operand 6 states. [2019-09-07 23:17:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:27,657 INFO L93 Difference]: Finished difference Result 7836 states and 14038 transitions. [2019-09-07 23:17:27,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:17:27,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-09-07 23:17:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:27,687 INFO L225 Difference]: With dead ends: 7836 [2019-09-07 23:17:27,687 INFO L226 Difference]: Without dead ends: 4689 [2019-09-07 23:17:27,695 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 23:17:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2019-09-07 23:17:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 4638. [2019-09-07 23:17:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2019-09-07 23:17:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7774 transitions. [2019-09-07 23:17:27,860 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7774 transitions. Word has length 136 [2019-09-07 23:17:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:27,863 INFO L475 AbstractCegarLoop]: Abstraction has 4638 states and 7774 transitions. [2019-09-07 23:17:27,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:17:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7774 transitions. [2019-09-07 23:17:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-09-07 23:17:27,874 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:27,874 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, 2, 2, 2, 2, 2, 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] [2019-09-07 23:17:27,874 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -260459136, now seen corresponding path program 1 times [2019-09-07 23:17:27,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:27,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:27,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:27,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:27,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:17:28,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:17:28,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:17:28,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:17:28,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:17:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:17:28,193 INFO L87 Difference]: Start difference. First operand 4638 states and 7774 transitions. Second operand 6 states. [2019-09-07 23:17:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:55,347 INFO L93 Difference]: Finished difference Result 18577 states and 32239 transitions. [2019-09-07 23:17:55,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:17:55,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2019-09-07 23:17:55,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:55,419 INFO L225 Difference]: With dead ends: 18577 [2019-09-07 23:17:55,419 INFO L226 Difference]: Without dead ends: 13945 [2019-09-07 23:17:55,435 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:17:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2019-09-07 23:17:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13883. [2019-09-07 23:17:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2019-09-07 23:17:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 20516 transitions. [2019-09-07 23:17:55,769 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 20516 transitions. Word has length 154 [2019-09-07 23:17:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:55,770 INFO L475 AbstractCegarLoop]: Abstraction has 13883 states and 20516 transitions. [2019-09-07 23:17:55,770 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:17:55,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 20516 transitions. [2019-09-07 23:17:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-09-07 23:17:55,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:55,774 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, 2, 2, 2, 2, 2, 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] [2019-09-07 23:17:55,775 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:55,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:55,775 INFO L82 PathProgramCache]: Analyzing trace with hash 717442897, now seen corresponding path program 1 times [2019-09-07 23:17:55,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:55,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:55,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:55,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:55,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:17:55,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:17:55,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:17:55,928 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:17:55,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:17:55,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:17:55,929 INFO L87 Difference]: Start difference. First operand 13883 states and 20516 transitions. Second operand 5 states. [2019-09-07 23:18:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:12,445 INFO L93 Difference]: Finished difference Result 43605 states and 68936 transitions. [2019-09-07 23:18:12,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:18:12,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2019-09-07 23:18:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:12,558 INFO L225 Difference]: With dead ends: 43605 [2019-09-07 23:18:12,558 INFO L226 Difference]: Without dead ends: 29728 [2019-09-07 23:18:12,603 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 23:18:12,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29728 states. [2019-09-07 23:18:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29728 to 28660. [2019-09-07 23:18:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28660 states. [2019-09-07 23:18:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28660 states to 28660 states and 40233 transitions. [2019-09-07 23:18:13,434 INFO L78 Accepts]: Start accepts. Automaton has 28660 states and 40233 transitions. Word has length 199 [2019-09-07 23:18:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:18:13,436 INFO L475 AbstractCegarLoop]: Abstraction has 28660 states and 40233 transitions. [2019-09-07 23:18:13,436 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:18:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28660 states and 40233 transitions. [2019-09-07 23:18:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-09-07 23:18:13,444 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:18:13,444 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:18:13,444 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:18:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:18:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash -254773066, now seen corresponding path program 1 times [2019-09-07 23:18:13,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:18:13,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:18:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:13,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 116 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:18:13,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:18:13,846 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 23:18:13,868 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 23:18:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:13,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:18:14,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:18:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 23:18:14,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:18:14,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 23:18:14,180 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:18:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:18:14,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:18:14,181 INFO L87 Difference]: Start difference. First operand 28660 states and 40233 transitions. Second operand 7 states. [2019-09-07 23:18:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:30,453 INFO L93 Difference]: Finished difference Result 87291 states and 130127 transitions. [2019-09-07 23:18:30,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:18:30,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2019-09-07 23:18:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:30,743 INFO L225 Difference]: With dead ends: 87291 [2019-09-07 23:18:30,743 INFO L226 Difference]: Without dead ends: 58637 [2019-09-07 23:18:30,822 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:18:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58637 states. [2019-09-07 23:18:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58637 to 52832. [2019-09-07 23:18:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52832 states. [2019-09-07 23:18:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52832 states to 52832 states and 74086 transitions. [2019-09-07 23:18:32,475 INFO L78 Accepts]: Start accepts. Automaton has 52832 states and 74086 transitions. Word has length 218 [2019-09-07 23:18:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:18:32,475 INFO L475 AbstractCegarLoop]: Abstraction has 52832 states and 74086 transitions. [2019-09-07 23:18:32,475 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:18:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 52832 states and 74086 transitions. [2019-09-07 23:18:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-09-07 23:18:32,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:18:32,480 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:18:32,480 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:18:32,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:18:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash -54038488, now seen corresponding path program 1 times [2019-09-07 23:18:32,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:18:32,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:18:32,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:32,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:32,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 116 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:18:34,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:18:34,093 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 23:18:34,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:34,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:18:34,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:18:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 23:18:34,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:18:34,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 23:18:34,283 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:18:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:18:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:18:34,284 INFO L87 Difference]: Start difference. First operand 52832 states and 74086 transitions. Second operand 9 states. [2019-09-07 23:19:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:19:03,670 INFO L93 Difference]: Finished difference Result 186809 states and 306561 transitions. [2019-09-07 23:19:03,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 23:19:03,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-09-07 23:19:03,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:19:04,445 INFO L225 Difference]: With dead ends: 186809 [2019-09-07 23:19:04,446 INFO L226 Difference]: Without dead ends: 133983 [2019-09-07 23:19:04,621 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 23:19:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133983 states. [2019-09-07 23:19:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133983 to 126168. [2019-09-07 23:19:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126168 states. [2019-09-07 23:19:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126168 states to 126168 states and 177170 transitions. [2019-09-07 23:19:11,449 INFO L78 Accepts]: Start accepts. Automaton has 126168 states and 177170 transitions. Word has length 234 [2019-09-07 23:19:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:19:11,450 INFO L475 AbstractCegarLoop]: Abstraction has 126168 states and 177170 transitions. [2019-09-07 23:19:11,450 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:19:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 126168 states and 177170 transitions. [2019-09-07 23:19:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2019-09-07 23:19:11,485 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:19:11,486 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:11,486 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:19:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:19:11,487 INFO L82 PathProgramCache]: Analyzing trace with hash -670289456, now seen corresponding path program 1 times [2019-09-07 23:19:11,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:19:11,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:19:11,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:11,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:11,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 247 proven. 71 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 23:19:12,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:19:12,453 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 23:19:12,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:13,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:19:13,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:19:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 23:19:13,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:19:13,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:19:13,507 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:19:13,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:19:13,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:19:13,508 INFO L87 Difference]: Start difference. First operand 126168 states and 177170 transitions. Second operand 9 states. [2019-09-07 23:19:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:19:49,497 INFO L93 Difference]: Finished difference Result 362352 states and 595718 transitions. [2019-09-07 23:19:49,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:19:49,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 864 [2019-09-07 23:19:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:19:56,198 INFO L225 Difference]: With dead ends: 362352 [2019-09-07 23:19:56,198 INFO L226 Difference]: Without dead ends: 236190 [2019-09-07 23:19:56,437 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:19:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236190 states. [2019-09-07 23:20:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236190 to 233657. [2019-09-07 23:20:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233657 states. [2019-09-07 23:20:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233657 states to 233657 states and 358729 transitions. [2019-09-07 23:20:01,902 INFO L78 Accepts]: Start accepts. Automaton has 233657 states and 358729 transitions. Word has length 864 [2019-09-07 23:20:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:01,904 INFO L475 AbstractCegarLoop]: Abstraction has 233657 states and 358729 transitions. [2019-09-07 23:20:01,904 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:20:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 233657 states and 358729 transitions. [2019-09-07 23:20:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2019-09-07 23:20:01,962 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:01,963 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:01,963 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash -663827132, now seen corresponding path program 1 times [2019-09-07 23:20:01,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:01,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:01,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:01,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:01,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:05,108 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2019-09-07 23:20:05,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:20:05,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:20:05,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:20:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:20:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:20:05,113 INFO L87 Difference]: Start difference. First operand 233657 states and 358729 transitions. Second operand 4 states. [2019-09-07 23:20:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:36,620 INFO L93 Difference]: Finished difference Result 654494 states and 1097006 transitions. [2019-09-07 23:20:36,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:20:36,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1202 [2019-09-07 23:20:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:38,532 INFO L225 Difference]: With dead ends: 654494 [2019-09-07 23:20:38,532 INFO L226 Difference]: Without dead ends: 420843 [2019-09-07 23:20:39,839 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 23:20:40,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420843 states. [2019-09-07 23:20:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420843 to 417937. [2019-09-07 23:20:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417937 states. [2019-09-07 23:20:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417937 states to 417937 states and 657734 transitions. [2019-09-07 23:20:57,531 INFO L78 Accepts]: Start accepts. Automaton has 417937 states and 657734 transitions. Word has length 1202 [2019-09-07 23:20:57,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:57,533 INFO L475 AbstractCegarLoop]: Abstraction has 417937 states and 657734 transitions. [2019-09-07 23:20:57,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:20:57,534 INFO L276 IsEmpty]: Start isEmpty. Operand 417937 states and 657734 transitions. [2019-09-07 23:20:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2019-09-07 23:20:57,567 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:57,568 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:57,569 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash 539512990, now seen corresponding path program 1 times [2019-09-07 23:20:57,570 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:57,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:57,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:57,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:57,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 451 proven. 406 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 23:21:06,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:21:06,404 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 23:21:06,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:06,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:21:06,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:21:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 695 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2019-09-07 23:21:07,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:21:07,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 23:21:07,235 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:21:07,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:21:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:21:07,236 INFO L87 Difference]: Start difference. First operand 417937 states and 657734 transitions. Second operand 12 states. [2019-09-07 23:23:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:23:03,202 INFO L93 Difference]: Finished difference Result 1395055 states and 2612236 transitions. [2019-09-07 23:23:03,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-09-07 23:23:03,215 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 992 [2019-09-07 23:23:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:23:08,731 INFO L225 Difference]: With dead ends: 1395055 [2019-09-07 23:23:08,731 INFO L226 Difference]: Without dead ends: 948414 [2019-09-07 23:23:10,746 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1071 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3605 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1234, Invalid=8272, Unknown=0, NotChecked=0, Total=9506 [2019-09-07 23:23:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948414 states. [2019-09-07 23:23:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948414 to 902300. [2019-09-07 23:23:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902300 states. [2019-09-07 23:24:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902300 states to 902300 states and 1321276 transitions. [2019-09-07 23:24:24,566 INFO L78 Accepts]: Start accepts. Automaton has 902300 states and 1321276 transitions. Word has length 992 [2019-09-07 23:24:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:24:24,567 INFO L475 AbstractCegarLoop]: Abstraction has 902300 states and 1321276 transitions. [2019-09-07 23:24:24,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 23:24:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 902300 states and 1321276 transitions. [2019-09-07 23:24:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2019-09-07 23:24:24,614 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:24:24,615 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:24,615 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:24:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:24:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1808756583, now seen corresponding path program 1 times [2019-09-07 23:24:24,616 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:24:24,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:24:24,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:24,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:24,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat