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/Problem03_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:31:30,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:31:30,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:31:30,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 13:31:30,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:31:30,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:31:30,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:31:30,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:31:30,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:31:30,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:31:30,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:31:30,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:31:30,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:31:30,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:31:30,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:31:30,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:31:30,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 13:31:30,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:31:30,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:31:30,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:31:30,597 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 13:31:30,623 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:31:30,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:31:30,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:31:30,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:31:30,626 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:31:30,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:31:30,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:31:30,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:31:30,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:31:30,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:31:30,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:31:30,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:31:30,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:31:30,629 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:31:30,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:31:30,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:31:30,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:31:30,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:31:30,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:31:30,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:31:30,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:31:30,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:31:30,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:31:30,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:31:30,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:31:30,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:31:30,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:31:30,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:31:30,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:31:30,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:31:30,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:31:30,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:31:30,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:31:30,708 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:31:30,709 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2019-09-07 13:31:30,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6233c4210/a79b62d35bbc40b0b402e90c78f4a8ec/FLAGdef10e74a [2019-09-07 13:31:31,415 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:31:31,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label50.c [2019-09-07 13:31:31,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6233c4210/a79b62d35bbc40b0b402e90c78f4a8ec/FLAGdef10e74a [2019-09-07 13:31:31,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6233c4210/a79b62d35bbc40b0b402e90c78f4a8ec [2019-09-07 13:31:31,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:31:31,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:31:31,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:31:31,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:31:31,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:31:31,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:31:31" (1/1) ... [2019-09-07 13:31:31,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf01bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:31, skipping insertion in model container [2019-09-07 13:31:31,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:31:31" (1/1) ... [2019-09-07 13:31:31,814 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:31:31,907 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:31:32,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:31:32,872 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:31:33,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:31:33,119 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:31:33,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33 WrapperNode [2019-09-07 13:31:33,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:31:33,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:31:33,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:31:33,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:31:33,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (1/1) ... [2019-09-07 13:31:33,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:31:33,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:31:33,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:31:33,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:31:33,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (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 13:31:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:31:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:31:33,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:31:33,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:31:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:31:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:31:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:31:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:31:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:31:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:31:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:31:35,407 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:31:35,407 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:31:35,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:31:35 BoogieIcfgContainer [2019-09-07 13:31:35,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:31:35,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:31:35,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:31:35,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:31:35,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:31:31" (1/3) ... [2019-09-07 13:31:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28709000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:31:35, skipping insertion in model container [2019-09-07 13:31:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:31:33" (2/3) ... [2019-09-07 13:31:35,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28709000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:31:35, skipping insertion in model container [2019-09-07 13:31:35,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:31:35" (3/3) ... [2019-09-07 13:31:35,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2019-09-07 13:31:35,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:31:35,440 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:31:35,459 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:31:35,495 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:31:35,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:31:35,496 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:31:35,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:31:35,496 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:31:35,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:31:35,497 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:31:35,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:31:35,497 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:31:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:31:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-07 13:31:35,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:35,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:35,545 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1738397325, now seen corresponding path program 1 times [2019-09-07 13:31:35,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:35,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:35,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:35,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:35,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:36,458 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 13:31:36,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:31:36,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 13:31:36,467 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:31:36,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:31:36,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:31:36,485 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-07 13:31:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:38,871 INFO L93 Difference]: Finished difference Result 1076 states and 1932 transitions. [2019-09-07 13:31:38,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 13:31:38,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-09-07 13:31:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:38,924 INFO L225 Difference]: With dead ends: 1076 [2019-09-07 13:31:38,924 INFO L226 Difference]: Without dead ends: 683 [2019-09-07 13:31:38,939 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 13:31:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2019-09-07 13:31:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 458. [2019-09-07 13:31:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-09-07 13:31:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 752 transitions. [2019-09-07 13:31:39,046 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 752 transitions. Word has length 160 [2019-09-07 13:31:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:39,048 INFO L475 AbstractCegarLoop]: Abstraction has 458 states and 752 transitions. [2019-09-07 13:31:39,048 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:31:39,048 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 752 transitions. [2019-09-07 13:31:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-09-07 13:31:39,055 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:39,056 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:39,056 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash 490272561, now seen corresponding path program 1 times [2019-09-07 13:31:39,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:39,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:39,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:39,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:31:39,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:31:39,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 13:31:39,308 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:31:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:31:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:31:39,311 INFO L87 Difference]: Start difference. First operand 458 states and 752 transitions. Second operand 7 states. [2019-09-07 13:31:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:41,055 INFO L93 Difference]: Finished difference Result 1415 states and 2436 transitions. [2019-09-07 13:31:41,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:31:41,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2019-09-07 13:31:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:41,074 INFO L225 Difference]: With dead ends: 1415 [2019-09-07 13:31:41,075 INFO L226 Difference]: Without dead ends: 963 [2019-09-07 13:31:41,077 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:31:41,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-09-07 13:31:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 906. [2019-09-07 13:31:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2019-09-07 13:31:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1482 transitions. [2019-09-07 13:31:41,147 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1482 transitions. Word has length 176 [2019-09-07 13:31:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:41,148 INFO L475 AbstractCegarLoop]: Abstraction has 906 states and 1482 transitions. [2019-09-07 13:31:41,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:31:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1482 transitions. [2019-09-07 13:31:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-09-07 13:31:41,157 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:41,157 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:31:41,158 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:41,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1945180838, now seen corresponding path program 1 times [2019-09-07 13:31:41,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:41,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:41,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:41,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:41,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:31:41,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:31:41,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:31:41,294 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:31:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:31:41,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:31:41,295 INFO L87 Difference]: Start difference. First operand 906 states and 1482 transitions. Second operand 6 states. [2019-09-07 13:31:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:42,965 INFO L93 Difference]: Finished difference Result 2754 states and 4762 transitions. [2019-09-07 13:31:42,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:31:42,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2019-09-07 13:31:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:42,985 INFO L225 Difference]: With dead ends: 2754 [2019-09-07 13:31:42,986 INFO L226 Difference]: Without dead ends: 1854 [2019-09-07 13:31:42,991 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 13:31:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2019-09-07 13:31:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1788. [2019-09-07 13:31:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2019-09-07 13:31:43,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2937 transitions. [2019-09-07 13:31:43,083 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2937 transitions. Word has length 177 [2019-09-07 13:31:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:43,085 INFO L475 AbstractCegarLoop]: Abstraction has 1788 states and 2937 transitions. [2019-09-07 13:31:43,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:31:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2937 transitions. [2019-09-07 13:31:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-07 13:31:43,101 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:43,102 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-09-07 13:31:43,102 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:43,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1538152306, now seen corresponding path program 1 times [2019-09-07 13:31:43,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:43,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:43,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:43,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:43,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:31:43,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:31:43,250 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 13:31:43,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:43,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:31:43,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:31:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-07 13:31:43,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:31:43,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:31:43,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:31:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:31:43,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:31:43,631 INFO L87 Difference]: Start difference. First operand 1788 states and 2937 transitions. Second operand 9 states. [2019-09-07 13:31:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:47,609 INFO L93 Difference]: Finished difference Result 9294 states and 19171 transitions. [2019-09-07 13:31:47,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 13:31:47,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2019-09-07 13:31:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:47,687 INFO L225 Difference]: With dead ends: 9294 [2019-09-07 13:31:47,687 INFO L226 Difference]: Without dead ends: 7512 [2019-09-07 13:31:47,699 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2019-09-07 13:31:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7512 states. [2019-09-07 13:31:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7512 to 7164. [2019-09-07 13:31:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7164 states. [2019-09-07 13:31:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 12157 transitions. [2019-09-07 13:31:48,081 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 12157 transitions. Word has length 185 [2019-09-07 13:31:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:48,082 INFO L475 AbstractCegarLoop]: Abstraction has 7164 states and 12157 transitions. [2019-09-07 13:31:48,082 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:31:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 12157 transitions. [2019-09-07 13:31:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-09-07 13:31:48,105 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:48,106 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:31:48,106 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:48,107 INFO L82 PathProgramCache]: Analyzing trace with hash -215887715, now seen corresponding path program 1 times [2019-09-07 13:31:48,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:48,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:48,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:48,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:48,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:31:48,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:31:48,309 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:31:48,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:31:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:48,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:31:48,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:31:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:31:48,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:31:48,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 13:31:48,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:31:48,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:31:48,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:31:48,636 INFO L87 Difference]: Start difference. First operand 7164 states and 12157 transitions. Second operand 9 states. [2019-09-07 13:31:51,201 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2019-09-07 13:31:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:52,190 INFO L93 Difference]: Finished difference Result 31681 states and 60873 transitions. [2019-09-07 13:31:52,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 13:31:52,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 188 [2019-09-07 13:31:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:52,381 INFO L225 Difference]: With dead ends: 31681 [2019-09-07 13:31:52,381 INFO L226 Difference]: Without dead ends: 24523 [2019-09-07 13:31:52,427 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2019-09-07 13:31:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24523 states. [2019-09-07 13:31:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24523 to 23885. [2019-09-07 13:31:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23885 states. [2019-09-07 13:31:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23885 states to 23885 states and 39112 transitions. [2019-09-07 13:31:54,178 INFO L78 Accepts]: Start accepts. Automaton has 23885 states and 39112 transitions. Word has length 188 [2019-09-07 13:31:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:54,179 INFO L475 AbstractCegarLoop]: Abstraction has 23885 states and 39112 transitions. [2019-09-07 13:31:54,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:31:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 23885 states and 39112 transitions. [2019-09-07 13:31:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-09-07 13:31:54,219 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:54,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:54,220 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2139581957, now seen corresponding path program 1 times [2019-09-07 13:31:54,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:54,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:54,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:54,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:54,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:31:54,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:31:54,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:31:54,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:31:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:31:54,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:31:54,436 INFO L87 Difference]: Start difference. First operand 23885 states and 39112 transitions. Second operand 3 states. [2019-09-07 13:31:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:55,872 INFO L93 Difference]: Finished difference Result 68028 states and 114869 transitions. [2019-09-07 13:31:55,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:31:55,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-09-07 13:31:55,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:56,087 INFO L225 Difference]: With dead ends: 68028 [2019-09-07 13:31:56,088 INFO L226 Difference]: Without dead ends: 44149 [2019-09-07 13:31:56,206 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:31:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44149 states. [2019-09-07 13:31:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44149 to 44137. [2019-09-07 13:31:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44137 states. [2019-09-07 13:31:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44137 states to 44137 states and 68603 transitions. [2019-09-07 13:31:57,691 INFO L78 Accepts]: Start accepts. Automaton has 44137 states and 68603 transitions. Word has length 205 [2019-09-07 13:31:57,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:57,693 INFO L475 AbstractCegarLoop]: Abstraction has 44137 states and 68603 transitions. [2019-09-07 13:31:57,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:31:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 44137 states and 68603 transitions. [2019-09-07 13:31:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-09-07 13:31:57,776 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:57,776 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, 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] [2019-09-07 13:31:57,776 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2001731336, now seen corresponding path program 1 times [2019-09-07 13:31:57,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:57,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:57,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:57,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:57,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:31:59,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:31:59,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:31:59,056 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:31:59,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:31:59,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:31:59,057 INFO L87 Difference]: Start difference. First operand 44137 states and 68603 transitions. Second operand 3 states. [2019-09-07 13:32:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:00,590 INFO L93 Difference]: Finished difference Result 118568 states and 188957 transitions. [2019-09-07 13:32:00,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:32:00,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-09-07 13:32:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:00,960 INFO L225 Difference]: With dead ends: 118568 [2019-09-07 13:32:00,961 INFO L226 Difference]: Without dead ends: 74437 [2019-09-07 13:32:01,068 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:32:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74437 states. [2019-09-07 13:32:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74437 to 74245. [2019-09-07 13:32:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74245 states. [2019-09-07 13:32:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74245 states to 74245 states and 117429 transitions. [2019-09-07 13:32:03,460 INFO L78 Accepts]: Start accepts. Automaton has 74245 states and 117429 transitions. Word has length 227 [2019-09-07 13:32:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:03,460 INFO L475 AbstractCegarLoop]: Abstraction has 74245 states and 117429 transitions. [2019-09-07 13:32:03,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:32:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 74245 states and 117429 transitions. [2019-09-07 13:32:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-09-07 13:32:03,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:03,593 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:03,594 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1612551317, now seen corresponding path program 1 times [2019-09-07 13:32:03,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:03,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:03,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:03,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:03,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:32:03,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:03,769 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 13:32:03,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:04,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:32:04,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:32:04,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:32:04,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:32:04,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:32:04,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:32:04,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:32:04,154 INFO L87 Difference]: Start difference. First operand 74245 states and 117429 transitions. Second operand 9 states. [2019-09-07 13:32:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:15,772 INFO L93 Difference]: Finished difference Result 197578 states and 362933 transitions. [2019-09-07 13:32:15,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 13:32:15,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 238 [2019-09-07 13:32:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:16,946 INFO L225 Difference]: With dead ends: 197578 [2019-09-07 13:32:16,946 INFO L226 Difference]: Without dead ends: 123339 [2019-09-07 13:32:17,074 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 13:32:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123339 states. [2019-09-07 13:32:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123339 to 113583. [2019-09-07 13:32:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113583 states. [2019-09-07 13:32:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113583 states to 113583 states and 165246 transitions. [2019-09-07 13:32:21,080 INFO L78 Accepts]: Start accepts. Automaton has 113583 states and 165246 transitions. Word has length 238 [2019-09-07 13:32:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:21,080 INFO L475 AbstractCegarLoop]: Abstraction has 113583 states and 165246 transitions. [2019-09-07 13:32:21,080 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:32:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 113583 states and 165246 transitions. [2019-09-07 13:32:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-09-07 13:32:23,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:23,707 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:23,708 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1718621115, now seen corresponding path program 1 times [2019-09-07 13:32:23,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:23,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:23,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:23,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:23,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 144 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 13:32:23,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:23,905 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) [2019-09-07 13:32:23,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:32:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:24,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:32:24,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 13:32:24,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:32:24,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 13:32:24,243 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:32:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:32:24,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:32:24,244 INFO L87 Difference]: Start difference. First operand 113583 states and 165246 transitions. Second operand 8 states. [2019-09-07 13:32:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:30,213 INFO L93 Difference]: Finished difference Result 339377 states and 548434 transitions. [2019-09-07 13:32:30,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 13:32:30,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2019-09-07 13:32:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:31,729 INFO L225 Difference]: With dead ends: 339377 [2019-09-07 13:32:31,729 INFO L226 Difference]: Without dead ends: 227880 [2019-09-07 13:32:35,414 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:32:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227880 states. [2019-09-07 13:32:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227880 to 218172. [2019-09-07 13:32:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218172 states. [2019-09-07 13:32:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218172 states to 218172 states and 322323 transitions. [2019-09-07 13:32:41,455 INFO L78 Accepts]: Start accepts. Automaton has 218172 states and 322323 transitions. Word has length 305 [2019-09-07 13:32:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:41,455 INFO L475 AbstractCegarLoop]: Abstraction has 218172 states and 322323 transitions. [2019-09-07 13:32:41,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:32:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 218172 states and 322323 transitions. [2019-09-07 13:32:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-09-07 13:32:41,754 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:41,754 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:32:41,755 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:41,755 INFO L82 PathProgramCache]: Analyzing trace with hash 280233391, now seen corresponding path program 1 times [2019-09-07 13:32:41,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:41,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:41,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:41,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:41,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 140 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 13:32:41,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:41,968 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) [2019-09-07 13:32:41,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:32:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:42,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:32:42,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-07 13:32:42,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:32:42,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:32:42,297 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:32:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:32:42,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:32:42,298 INFO L87 Difference]: Start difference. First operand 218172 states and 322323 transitions. Second operand 9 states. [2019-09-07 13:32:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:49,789 INFO L93 Difference]: Finished difference Result 395542 states and 572608 transitions. [2019-09-07 13:32:49,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:32:49,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2019-09-07 13:32:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:50,315 INFO L225 Difference]: With dead ends: 395542 [2019-09-07 13:32:50,315 INFO L226 Difference]: Without dead ends: 179769 [2019-09-07 13:32:50,626 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:32:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179769 states. [2019-09-07 13:32:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179769 to 177826. [2019-09-07 13:32:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177826 states. [2019-09-07 13:32:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177826 states to 177826 states and 229562 transitions. [2019-09-07 13:32:54,133 INFO L78 Accepts]: Start accepts. Automaton has 177826 states and 229562 transitions. Word has length 311 [2019-09-07 13:32:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:54,134 INFO L475 AbstractCegarLoop]: Abstraction has 177826 states and 229562 transitions. [2019-09-07 13:32:54,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:32:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 177826 states and 229562 transitions. [2019-09-07 13:32:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2019-09-07 13:32:54,288 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:54,288 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:32:54,288 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:54,289 INFO L82 PathProgramCache]: Analyzing trace with hash 601133592, now seen corresponding path program 1 times [2019-09-07 13:32:54,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:54,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:54,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:54,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:54,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 198 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 13:32:54,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:54,589 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 13:32:54,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:54,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:32:54,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:54,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:32:55,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:32:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:32:58,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:32:58,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-07 13:32:58,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:32:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:32:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:32:58,595 INFO L87 Difference]: Start difference. First operand 177826 states and 229562 transitions. Second operand 9 states. [2019-09-07 13:33:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:33:13,647 INFO L93 Difference]: Finished difference Result 642644 states and 949855 transitions. [2019-09-07 13:33:13,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-09-07 13:33:13,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 361 [2019-09-07 13:33:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:33:16,945 INFO L225 Difference]: With dead ends: 642644 [2019-09-07 13:33:16,945 INFO L226 Difference]: Without dead ends: 467807 [2019-09-07 13:33:17,393 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=679, Invalid=3481, Unknown=0, NotChecked=0, Total=4160 [2019-09-07 13:33:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467807 states. [2019-09-07 13:33:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467807 to 455947. [2019-09-07 13:33:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455947 states. [2019-09-07 13:33:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455947 states to 455947 states and 598982 transitions. [2019-09-07 13:33:35,910 INFO L78 Accepts]: Start accepts. Automaton has 455947 states and 598982 transitions. Word has length 361 [2019-09-07 13:33:35,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:33:35,911 INFO L475 AbstractCegarLoop]: Abstraction has 455947 states and 598982 transitions. [2019-09-07 13:33:35,911 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:33:35,911 INFO L276 IsEmpty]: Start isEmpty. Operand 455947 states and 598982 transitions. [2019-09-07 13:33:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2019-09-07 13:33:36,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:33:36,431 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:33:36,432 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:33:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:33:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash -382040085, now seen corresponding path program 1 times [2019-09-07 13:33:36,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:33:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:33:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:33:36,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:33:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:33:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:33:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 192 proven. 79 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 13:33:36,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:33:36,764 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:33:36,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:33:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:33:42,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:33:42,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:33:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-07 13:33:42,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:33:42,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:33:42,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:33:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:33:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:33:42,896 INFO L87 Difference]: Start difference. First operand 455947 states and 598982 transitions. Second operand 9 states. [2019-09-07 13:33:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:33:52,458 INFO L93 Difference]: Finished difference Result 955384 states and 1260683 transitions. [2019-09-07 13:33:52,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 13:33:52,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 363 [2019-09-07 13:33:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:33:54,479 INFO L225 Difference]: With dead ends: 955384 [2019-09-07 13:33:54,479 INFO L226 Difference]: Without dead ends: 502647 [2019-09-07 13:33:56,234 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 370 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-09-07 13:33:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502647 states. [2019-09-07 13:34:14,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502647 to 491641. [2019-09-07 13:34:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491641 states. [2019-09-07 13:34:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491641 states to 491641 states and 646551 transitions. [2019-09-07 13:34:15,583 INFO L78 Accepts]: Start accepts. Automaton has 491641 states and 646551 transitions. Word has length 363 [2019-09-07 13:34:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:34:15,584 INFO L475 AbstractCegarLoop]: Abstraction has 491641 states and 646551 transitions. [2019-09-07 13:34:15,584 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:34:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 491641 states and 646551 transitions. [2019-09-07 13:34:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2019-09-07 13:34:16,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:34:16,136 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:16,136 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:34:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:34:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash -208820911, now seen corresponding path program 1 times [2019-09-07 13:34:16,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:34:16,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:34:16,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:16,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:16,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:34:17,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:34:17,820 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:34:17,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:18,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:34:18,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:34:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:34:18,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:34:18,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:34:18,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:34:18,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:34:18,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:34:18,209 INFO L87 Difference]: Start difference. First operand 491641 states and 646551 transitions. Second operand 9 states. [2019-09-07 13:34:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:34:44,132 INFO L93 Difference]: Finished difference Result 1178556 states and 1589974 transitions. [2019-09-07 13:34:44,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:34:44,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 372 [2019-09-07 13:34:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:34:46,525 INFO L225 Difference]: With dead ends: 1178556 [2019-09-07 13:34:46,525 INFO L226 Difference]: Without dead ends: 689063 [2019-09-07 13:34:47,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:34:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689063 states. [2019-09-07 13:35:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689063 to 639235. [2019-09-07 13:35:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639235 states. [2019-09-07 13:35:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639235 states to 639235 states and 829316 transitions. [2019-09-07 13:35:21,664 INFO L78 Accepts]: Start accepts. Automaton has 639235 states and 829316 transitions. Word has length 372 [2019-09-07 13:35:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:35:21,665 INFO L475 AbstractCegarLoop]: Abstraction has 639235 states and 829316 transitions. [2019-09-07 13:35:21,665 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:35:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 639235 states and 829316 transitions. [2019-09-07 13:35:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-09-07 13:35:22,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:22,505 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:22,506 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:22,506 INFO L82 PathProgramCache]: Analyzing trace with hash -455331906, now seen corresponding path program 1 times [2019-09-07 13:35:22,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:22,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:22,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:22,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:22,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 221 proven. 142 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 13:35:22,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:35:22,929 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:35:22,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:23,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:35:23,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:35:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 324 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-09-07 13:35:23,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:35:23,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:35:23,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:35:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:35:23,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:35:23,342 INFO L87 Difference]: Start difference. First operand 639235 states and 829316 transitions. Second operand 13 states. [2019-09-07 13:35:25,072 WARN L188 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 8