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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:23:02,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:23:02,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:23:02,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:23:02,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:23:02,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:23:02,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:23:02,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:23:02,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:23:02,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:23:02,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:23:02,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:23:02,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:23:02,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:23:02,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:23:02,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:23:02,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:23:02,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:23:02,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:23:02,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:23:02,631 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 23:23:02,646 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:23:02,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:23:02,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:23:02,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:23:02,648 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:23:02,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:23:02,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:23:02,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:23:02,649 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:23:02,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:23:02,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:23:02,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:23:02,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:23:02,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:23:02,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:23:02,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:23:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:23:02,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:23:02,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:23:02,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:23:02,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:23:02,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:23:02,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:23:02,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:23:02,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:23:02,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:23:02,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:23:02,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:23:02,705 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:23:02,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2019-09-07 23:23:02,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf9eac25/6eabcb79ce9246fc9a935b365daf1e7e/FLAG7f1f04f3e [2019-09-07 23:23:03,791 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:23:03,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2019-09-07 23:23:03,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf9eac25/6eabcb79ce9246fc9a935b365daf1e7e/FLAG7f1f04f3e [2019-09-07 23:23:04,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaf9eac25/6eabcb79ce9246fc9a935b365daf1e7e [2019-09-07 23:23:04,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:23:04,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:23:04,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:23:04,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:23:04,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:23:04,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:23:04" (1/1) ... [2019-09-07 23:23:04,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2921fa5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:04, skipping insertion in model container [2019-09-07 23:23:04,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:23:04" (1/1) ... [2019-09-07 23:23:04,219 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:23:04,426 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:23:06,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:23:06,735 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:23:07,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:23:07,880 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:23:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07 WrapperNode [2019-09-07 23:23:07,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:23:07,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:23:07,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:23:07,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:23:07,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:07,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:07,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:07,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:08,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:08,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:08,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (1/1) ... [2019-09-07 23:23:08,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:23:08,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:23:08,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:23:08,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:23:08,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (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 23:23:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:23:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:23:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:23:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:23:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:23:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:23:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:23:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:23:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:23:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:23:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:23:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:23:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:23:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:23:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:23:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:23:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:23:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:23:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:23:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:23:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:23:19,634 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:23:19,635 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:23:19,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:23:19 BoogieIcfgContainer [2019-09-07 23:23:19,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:23:19,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:23:19,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:23:19,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:23:19,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:23:04" (1/3) ... [2019-09-07 23:23:19,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4236c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:23:19, skipping insertion in model container [2019-09-07 23:23:19,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:23:07" (2/3) ... [2019-09-07 23:23:19,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4236c70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:23:19, skipping insertion in model container [2019-09-07 23:23:19,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:23:19" (3/3) ... [2019-09-07 23:23:19,657 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label47.c [2019-09-07 23:23:19,673 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:23:19,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:23:19,705 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:23:19,768 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:23:19,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:23:19,770 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:23:19,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:23:19,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:23:19,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:23:19,770 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:23:19,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:23:19,771 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:23:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:23:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-07 23:23:19,834 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:23:19,835 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:23:19,837 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:23:19,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:23:19,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1648095394, now seen corresponding path program 1 times [2019-09-07 23:23:19,843 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:23:19,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:23:19,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:19,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:23:19,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:23:20,152 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 23:23:20,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:23:20,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:23:20,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:23:20,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:23:20,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:23:20,180 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:23:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:23:31,188 INFO L93 Difference]: Finished difference Result 5031 states and 9496 transitions. [2019-09-07 23:23:31,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:23:31,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-07 23:23:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:23:31,239 INFO L225 Difference]: With dead ends: 5031 [2019-09-07 23:23:31,240 INFO L226 Difference]: Without dead ends: 3192 [2019-09-07 23:23:31,253 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 23:23:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2019-09-07 23:23:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3145. [2019-09-07 23:23:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-09-07 23:23:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5823 transitions. [2019-09-07 23:23:31,454 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5823 transitions. Word has length 14 [2019-09-07 23:23:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:23:31,455 INFO L475 AbstractCegarLoop]: Abstraction has 3145 states and 5823 transitions. [2019-09-07 23:23:31,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:23:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5823 transitions. [2019-09-07 23:23:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-07 23:23:31,459 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:23:31,460 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:23:31,460 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:23:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:23:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1316168237, now seen corresponding path program 1 times [2019-09-07 23:23:31,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:23:31,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:23:31,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:31,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:23:31,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:23:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:23:31,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:23:31,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:23:31,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:23:31,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:23:31,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:23:31,769 INFO L87 Difference]: Start difference. First operand 3145 states and 5823 transitions. Second operand 6 states. [2019-09-07 23:23:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:23:47,949 INFO L93 Difference]: Finished difference Result 9402 states and 17465 transitions. [2019-09-07 23:23:47,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:23:47,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2019-09-07 23:23:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:23:47,993 INFO L225 Difference]: With dead ends: 9402 [2019-09-07 23:23:47,993 INFO L226 Difference]: Without dead ends: 6263 [2019-09-07 23:23:48,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:23:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2019-09-07 23:23:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6157. [2019-09-07 23:23:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2019-09-07 23:23:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10968 transitions. [2019-09-07 23:23:48,210 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 10968 transitions. Word has length 86 [2019-09-07 23:23:48,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:23:48,211 INFO L475 AbstractCegarLoop]: Abstraction has 6157 states and 10968 transitions. [2019-09-07 23:23:48,211 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:23:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 10968 transitions. [2019-09-07 23:23:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-07 23:23:48,215 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:23:48,215 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:23:48,215 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:23:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:23:48,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1453237866, now seen corresponding path program 1 times [2019-09-07 23:23:48,216 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:23:48,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:23:48,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:48,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:23:48,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:23:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:23:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:23:48,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:23:48,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:23:48,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:23:48,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:23:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:23:48,368 INFO L87 Difference]: Start difference. First operand 6157 states and 10968 transitions. Second operand 5 states. [2019-09-07 23:24:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:24:04,955 INFO L93 Difference]: Finished difference Result 18589 states and 33342 transitions. [2019-09-07 23:24:04,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:24:04,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-09-07 23:24:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:24:05,036 INFO L225 Difference]: With dead ends: 18589 [2019-09-07 23:24:05,037 INFO L226 Difference]: Without dead ends: 12438 [2019-09-07 23:24:05,055 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 23:24:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2019-09-07 23:24:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12168. [2019-09-07 23:24:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2019-09-07 23:24:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18247 transitions. [2019-09-07 23:24:05,419 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18247 transitions. Word has length 100 [2019-09-07 23:24:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:24:05,420 INFO L475 AbstractCegarLoop]: Abstraction has 12168 states and 18247 transitions. [2019-09-07 23:24:05,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:24:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18247 transitions. [2019-09-07 23:24:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-07 23:24:05,434 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:24:05,434 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:24:05,434 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:24:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:24:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash -82491145, now seen corresponding path program 1 times [2019-09-07 23:24:05,439 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:24:05,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:24:05,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:05,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:24:05,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:24:05,665 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:24:05,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:05,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:24:05,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:24:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 23:24:05,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:24:05,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 23:24:05,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:24:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:24:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:24:05,959 INFO L87 Difference]: Start difference. First operand 12168 states and 18247 transitions. Second operand 7 states. [2019-09-07 23:24:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:24:32,744 INFO L93 Difference]: Finished difference Result 48379 states and 78171 transitions. [2019-09-07 23:24:32,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 23:24:32,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-09-07 23:24:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:24:32,941 INFO L225 Difference]: With dead ends: 48379 [2019-09-07 23:24:32,941 INFO L226 Difference]: Without dead ends: 36217 [2019-09-07 23:24:32,984 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 23:24:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36217 states. [2019-09-07 23:24:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36217 to 35603. [2019-09-07 23:24:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35603 states. [2019-09-07 23:24:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35603 states to 35603 states and 49868 transitions. [2019-09-07 23:24:34,091 INFO L78 Accepts]: Start accepts. Automaton has 35603 states and 49868 transitions. Word has length 189 [2019-09-07 23:24:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:24:34,092 INFO L475 AbstractCegarLoop]: Abstraction has 35603 states and 49868 transitions. [2019-09-07 23:24:34,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:24:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 35603 states and 49868 transitions. [2019-09-07 23:24:34,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-09-07 23:24:34,098 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:24:34,099 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:34,099 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:24:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:24:34,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1605695693, now seen corresponding path program 1 times [2019-09-07 23:24:34,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:24:34,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:24:34,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:34,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:34,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 91 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:24:34,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:24:34,753 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 23:24:34,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:34,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:24:34,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:24:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 23:24:35,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:24:35,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 23:24:35,120 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:24:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:24:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:24:35,120 INFO L87 Difference]: Start difference. First operand 35603 states and 49868 transitions. Second operand 9 states. [2019-09-07 23:25:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:10,045 INFO L93 Difference]: Finished difference Result 135094 states and 227667 transitions. [2019-09-07 23:25:10,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-07 23:25:10,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 273 [2019-09-07 23:25:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:10,551 INFO L225 Difference]: With dead ends: 135094 [2019-09-07 23:25:10,551 INFO L226 Difference]: Without dead ends: 99497 [2019-09-07 23:25:10,669 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 23:25:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99497 states. [2019-09-07 23:25:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99497 to 95276. [2019-09-07 23:25:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95276 states. [2019-09-07 23:25:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95276 states to 95276 states and 143479 transitions. [2019-09-07 23:25:15,456 INFO L78 Accepts]: Start accepts. Automaton has 95276 states and 143479 transitions. Word has length 273 [2019-09-07 23:25:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:15,457 INFO L475 AbstractCegarLoop]: Abstraction has 95276 states and 143479 transitions. [2019-09-07 23:25:15,457 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:25:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 95276 states and 143479 transitions. [2019-09-07 23:25:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2019-09-07 23:25:15,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:15,480 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:15,480 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:15,480 INFO L82 PathProgramCache]: Analyzing trace with hash 673993995, now seen corresponding path program 1 times [2019-09-07 23:25:15,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:15,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:15,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:15,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:15,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:18,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:25:18,649 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) [2019-09-07 23:25:18,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:25:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:18,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:25:18,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:25:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:19,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:25:19,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:25:19,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:25:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:25:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:25:19,321 INFO L87 Difference]: Start difference. First operand 95276 states and 143479 transitions. Second operand 9 states. [2019-09-07 23:25:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:46,153 INFO L93 Difference]: Finished difference Result 258128 states and 460526 transitions. [2019-09-07 23:25:46,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:25:46,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 757 [2019-09-07 23:25:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:46,922 INFO L225 Difference]: With dead ends: 258128 [2019-09-07 23:25:46,922 INFO L226 Difference]: Without dead ends: 162858 [2019-09-07 23:25:47,082 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 23:25:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162858 states. [2019-09-07 23:25:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162858 to 162152. [2019-09-07 23:25:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162152 states. [2019-09-07 23:25:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162152 states to 162152 states and 289107 transitions. [2019-09-07 23:25:56,354 INFO L78 Accepts]: Start accepts. Automaton has 162152 states and 289107 transitions. Word has length 757 [2019-09-07 23:25:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:56,356 INFO L475 AbstractCegarLoop]: Abstraction has 162152 states and 289107 transitions. [2019-09-07 23:25:56,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:25:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 162152 states and 289107 transitions. [2019-09-07 23:25:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2019-09-07 23:25:56,386 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:56,387 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:56,387 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:56,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash 916022731, now seen corresponding path program 1 times [2019-09-07 23:25:56,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:56,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:56,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:56,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:56,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:57,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:25:57,969 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 23:25:57,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:58,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:25:58,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:25:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2019-09-07 23:25:58,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:25:58,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:25:58,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:25:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:25:58,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:25:58,497 INFO L87 Difference]: Start difference. First operand 162152 states and 289107 transitions. Second operand 7 states. [2019-09-07 23:26:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:33,262 INFO L93 Difference]: Finished difference Result 436115 states and 1047251 transitions. [2019-09-07 23:26:33,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:26:33,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 839 [2019-09-07 23:26:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:35,464 INFO L225 Difference]: With dead ends: 436115 [2019-09-07 23:26:35,465 INFO L226 Difference]: Without dead ends: 265570 [2019-09-07 23:26:36,670 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:26:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265570 states. [2019-09-07 23:26:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265570 to 259390. [2019-09-07 23:26:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259390 states. [2019-09-07 23:26:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259390 states to 259390 states and 636534 transitions. [2019-09-07 23:26:58,003 INFO L78 Accepts]: Start accepts. Automaton has 259390 states and 636534 transitions. Word has length 839 [2019-09-07 23:26:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:58,005 INFO L475 AbstractCegarLoop]: Abstraction has 259390 states and 636534 transitions. [2019-09-07 23:26:58,005 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:26:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 259390 states and 636534 transitions. [2019-09-07 23:26:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2019-09-07 23:26:58,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:58,029 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:26:58,030 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1410249200, now seen corresponding path program 1 times [2019-09-07 23:26:58,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:58,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:58,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:58,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:58,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 247 proven. 406 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 23:27:05,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:27:05,806 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 23:27:05,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:06,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:27:06,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:27:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 542 proven. 2 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Stream closed [2019-09-07 23:27:07,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:27:07,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 23:27:07,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:27:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:27:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:27:07,018 INFO L87 Difference]: Start difference. First operand 259390 states and 636534 transitions. Second operand 12 states. [2019-09-07 23:29:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:29:02,326 INFO L93 Difference]: Finished difference Result 1004180 states and 2658752 transitions. [2019-09-07 23:29:02,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-09-07 23:29:02,326 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 941 [2019-09-07 23:29:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:29:07,544 INFO L225 Difference]: With dead ends: 1004180 [2019-09-07 23:29:07,544 INFO L226 Difference]: Without dead ends: 711738 [2019-09-07 23:29:10,250 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1020 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1234, Invalid=8272, Unknown=0, NotChecked=0, Total=9506 [2019-09-07 23:29:10,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711738 states. [2019-09-07 23:29:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711738 to 687953. [2019-09-07 23:29:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687953 states. [2019-09-07 23:30:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687953 states to 687953 states and 1044543 transitions. [2019-09-07 23:30:14,873 INFO L78 Accepts]: Start accepts. Automaton has 687953 states and 1044543 transitions. Word has length 941 [2019-09-07 23:30:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:30:14,875 INFO L475 AbstractCegarLoop]: Abstraction has 687953 states and 1044543 transitions. [2019-09-07 23:30:14,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 23:30:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 687953 states and 1044543 transitions. [2019-09-07 23:30:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2019-09-07 23:30:14,906 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:30:14,907 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:14,908 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:30:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:30:14,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1099815698, now seen corresponding path program 1 times [2019-09-07 23:30:14,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:30:14,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:30:14,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:14,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:14,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:30:25,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:30:25,291 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 23:30:25,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:25,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:30:25,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:30:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:30:26,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:30:26,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:30:26,143 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:30:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:30:26,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:30:26,143 INFO L87 Difference]: Start difference. First operand 687953 states and 1044543 transitions. Second operand 9 states. [2019-09-07 23:31:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:31:31,369 INFO L93 Difference]: Finished difference Result 1478824 states and 2507280 transitions. [2019-09-07 23:31:31,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:31:31,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1065 [2019-09-07 23:31:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:31:36,181 INFO L225 Difference]: With dead ends: 1478824 [2019-09-07 23:31:36,181 INFO L226 Difference]: Without dead ends: 777792 [2019-09-07 23:31:37,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1086 GetRequests, 1070 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:31:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777792 states. [2019-09-07 23:32:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777792 to 764191. [2019-09-07 23:32:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764191 states.