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/Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:37:30,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:37:30,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:37:30,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 18:37:30,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:37:30,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:37:30,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:37:30,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:37:30,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:37:30,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:37:30,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:37:30,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:37:30,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:37:30,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:37:30,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:37:30,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:37:30,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 18:37:30,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:37:30,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:37:30,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:37:30,470 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 18:37:30,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:37:30,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:37:30,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:37:30,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:37:30,487 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:37:30,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:37:30,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:37:30,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:37:30,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:37:30,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:37:30,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:37:30,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:37:30,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:37:30,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:37:30,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:37:30,489 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:37:30,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:37:30,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:37:30,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:37:30,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:37:30,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:37:30,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:37:30,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:37:30,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:37:30,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:37:30,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:37:30,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:37:30,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:37:30,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:37:30,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:37:30,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:37:30,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:37:30,537 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:37:30,538 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:37:30,538 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2019-09-07 18:37:30,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa417864/e37a498c6b0442a19f76c4a26a6bf41f/FLAGda722f356 [2019-09-07 18:37:31,320 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:37:31,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2019-09-07 18:37:31,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa417864/e37a498c6b0442a19f76c4a26a6bf41f/FLAGda722f356 [2019-09-07 18:37:31,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa417864/e37a498c6b0442a19f76c4a26a6bf41f [2019-09-07 18:37:31,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:37:31,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:37:31,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:37:31,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:37:31,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:37:31,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:37:31" (1/1) ... [2019-09-07 18:37:31,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744bf3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:31, skipping insertion in model container [2019-09-07 18:37:31,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:37:31" (1/1) ... [2019-09-07 18:37:31,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:37:31,588 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:37:33,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:37:33,391 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:37:34,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:37:34,409 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:37:34,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34 WrapperNode [2019-09-07 18:37:34,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:37:34,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:37:34,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:37:34,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:37:34,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (1/1) ... [2019-09-07 18:37:34,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:37:34,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:37:34,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:37:34,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:37:34,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (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 18:37:34,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:37:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:37:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:37:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 18:37:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 18:37:34,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 18:37:34,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:37:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:37:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 18:37:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 18:37:34,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 18:37:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:37:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:37:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:37:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:37:34,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:37:34,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:37:40,576 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:37:40,577 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:37:40,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:37:40 BoogieIcfgContainer [2019-09-07 18:37:40,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:37:40,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:37:40,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:37:40,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:37:40,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:37:31" (1/3) ... [2019-09-07 18:37:40,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b39d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:37:40, skipping insertion in model container [2019-09-07 18:37:40,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:37:34" (2/3) ... [2019-09-07 18:37:40,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b39d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:37:40, skipping insertion in model container [2019-09-07 18:37:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:37:40" (3/3) ... [2019-09-07 18:37:40,597 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label05.c [2019-09-07 18:37:40,607 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:37:40,615 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:37:40,632 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:37:40,672 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:37:40,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:37:40,673 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:37:40,673 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:37:40,673 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:37:40,674 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:37:40,674 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:37:40,674 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:37:40,674 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:37:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 18:37:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-07 18:37:40,721 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:37:40,722 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:37:40,725 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:37:40,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:37:40,731 INFO L82 PathProgramCache]: Analyzing trace with hash 31716538, now seen corresponding path program 1 times [2019-09-07 18:37:40,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:37:40,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:37:40,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:40,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:40,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:41,149 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 18:37:41,152 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:37:41,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:37:41,158 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:37:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:37:41,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:37:41,176 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 18:37:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:37:46,997 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 18:37:46,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:37:46,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-07 18:37:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:37:47,034 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 18:37:47,035 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 18:37:47,049 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 18:37:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 18:37:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 18:37:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 18:37:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-09-07 18:37:47,208 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 65 [2019-09-07 18:37:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:37:47,209 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-09-07 18:37:47,209 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:37:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-09-07 18:37:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-07 18:37:47,215 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:37:47,216 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:37:47,216 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:37:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:37:47,217 INFO L82 PathProgramCache]: Analyzing trace with hash 781769327, now seen corresponding path program 1 times [2019-09-07 18:37:47,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:37:47,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:37:47,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:47,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:47,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:37:47,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:37:47,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:37:47,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:37:47,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:37:47,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:37:47,419 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-09-07 18:37:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:37:54,980 INFO L93 Difference]: Finished difference Result 3912 states and 7104 transitions. [2019-09-07 18:37:54,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:37:54,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-09-07 18:37:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:37:54,995 INFO L225 Difference]: With dead ends: 3912 [2019-09-07 18:37:54,996 INFO L226 Difference]: Without dead ends: 2376 [2019-09-07 18:37:55,001 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 18:37:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-09-07 18:37:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-09-07 18:37:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-09-07 18:37:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-09-07 18:37:55,107 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 138 [2019-09-07 18:37:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:37:55,108 INFO L475 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-09-07 18:37:55,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:37:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-09-07 18:37:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 18:37:55,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:37:55,112 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 18:37:55,112 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:37:55,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:37:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1960620333, now seen corresponding path program 1 times [2019-09-07 18:37:55,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:37:55,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:37:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:55,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:37:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 18:37:55,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:37:55,338 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 18:37:55,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:37:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:37:55,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:37:55,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:37:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 18:37:55,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:37:55,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-09-07 18:37:55,550 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:37:55,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:37:55,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:37:55,551 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 6 states. [2019-09-07 18:38:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:38:06,311 INFO L93 Difference]: Finished difference Result 9666 states and 16689 transitions. [2019-09-07 18:38:06,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 18:38:06,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-09-07 18:38:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:38:06,364 INFO L225 Difference]: With dead ends: 9666 [2019-09-07 18:38:06,364 INFO L226 Difference]: Without dead ends: 7322 [2019-09-07 18:38:06,372 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-09-07 18:38:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2019-09-07 18:38:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 7280. [2019-09-07 18:38:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7280 states. [2019-09-07 18:38:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 10794 transitions. [2019-09-07 18:38:06,613 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 10794 transitions. Word has length 140 [2019-09-07 18:38:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:38:06,615 INFO L475 AbstractCegarLoop]: Abstraction has 7280 states and 10794 transitions. [2019-09-07 18:38:06,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:38:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 10794 transitions. [2019-09-07 18:38:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-09-07 18:38:06,628 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:38:06,628 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:38:06,629 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:38:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:38:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1855734647, now seen corresponding path program 1 times [2019-09-07 18:38:06,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:38:06,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:38:06,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:06,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:06,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 116 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:38:06,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:38:06,952 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 18:38:06,967 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 18:38:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:07,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:38:07,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:38:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 18:38:07,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:38:07,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:38:07,238 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:38:07,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:38:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:38:07,239 INFO L87 Difference]: Start difference. First operand 7280 states and 10794 transitions. Second operand 9 states. [2019-09-07 18:38:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:38:26,211 INFO L93 Difference]: Finished difference Result 37018 states and 63122 transitions. [2019-09-07 18:38:26,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 18:38:26,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2019-09-07 18:38:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:38:26,374 INFO L225 Difference]: With dead ends: 37018 [2019-09-07 18:38:26,375 INFO L226 Difference]: Without dead ends: 29744 [2019-09-07 18:38:26,410 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 18:38:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29744 states. [2019-09-07 18:38:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29744 to 29443. [2019-09-07 18:38:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29443 states. [2019-09-07 18:38:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29443 states to 29443 states and 43642 transitions. [2019-09-07 18:38:27,437 INFO L78 Accepts]: Start accepts. Automaton has 29443 states and 43642 transitions. Word has length 240 [2019-09-07 18:38:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:38:27,438 INFO L475 AbstractCegarLoop]: Abstraction has 29443 states and 43642 transitions. [2019-09-07 18:38:27,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:38:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 29443 states and 43642 transitions. [2019-09-07 18:38:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-09-07 18:38:27,445 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:38:27,445 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:38:27,446 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:38:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:38:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash -66464193, now seen corresponding path program 1 times [2019-09-07 18:38:27,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:38:27,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:38:27,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:27,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:27,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 116 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:38:28,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:38:28,476 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 18:38:28,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:28,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:38:28,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:38:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 18:38:28,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:38:28,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-09-07 18:38:28,670 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 18:38:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 18:38:28,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 18:38:28,671 INFO L87 Difference]: Start difference. First operand 29443 states and 43642 transitions. Second operand 7 states. [2019-09-07 18:38:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:38:37,138 INFO L93 Difference]: Finished difference Result 85018 states and 135144 transitions. [2019-09-07 18:38:37,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:38:37,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2019-09-07 18:38:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:38:37,381 INFO L225 Difference]: With dead ends: 85018 [2019-09-07 18:38:37,382 INFO L226 Difference]: Without dead ends: 55581 [2019-09-07 18:38:37,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:38:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55581 states. [2019-09-07 18:38:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55581 to 51452. [2019-09-07 18:38:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51452 states. [2019-09-07 18:38:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51452 states to 51452 states and 75389 transitions. [2019-09-07 18:38:39,333 INFO L78 Accepts]: Start accepts. Automaton has 51452 states and 75389 transitions. Word has length 244 [2019-09-07 18:38:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:38:39,334 INFO L475 AbstractCegarLoop]: Abstraction has 51452 states and 75389 transitions. [2019-09-07 18:38:39,334 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 18:38:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 51452 states and 75389 transitions. [2019-09-07 18:38:39,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-09-07 18:38:39,346 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:38:39,347 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:39,348 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:38:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:38:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash -869797989, now seen corresponding path program 1 times [2019-09-07 18:38:39,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:38:39,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:38:39,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:39,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:39,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:38:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:38:39,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:38:39,627 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 18:38:39,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:38:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:38:39,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:38:39,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:38:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:38:39,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:38:39,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:38:39,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:38:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:38:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:38:39,850 INFO L87 Difference]: Start difference. First operand 51452 states and 75389 transitions. Second operand 9 states. [2019-09-07 18:39:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:39:08,711 INFO L93 Difference]: Finished difference Result 148933 states and 301891 transitions. [2019-09-07 18:39:08,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-07 18:39:08,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 310 [2019-09-07 18:39:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:39:11,388 INFO L225 Difference]: With dead ends: 148933 [2019-09-07 18:39:11,390 INFO L226 Difference]: Without dead ends: 97487 [2019-09-07 18:39:11,535 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=441, Invalid=1721, Unknown=0, NotChecked=0, Total=2162 [2019-09-07 18:39:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97487 states. [2019-09-07 18:39:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97487 to 93891. [2019-09-07 18:39:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93891 states. [2019-09-07 18:39:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93891 states to 93891 states and 131781 transitions. [2019-09-07 18:39:15,159 INFO L78 Accepts]: Start accepts. Automaton has 93891 states and 131781 transitions. Word has length 310 [2019-09-07 18:39:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:39:15,161 INFO L475 AbstractCegarLoop]: Abstraction has 93891 states and 131781 transitions. [2019-09-07 18:39:15,161 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:39:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 93891 states and 131781 transitions. [2019-09-07 18:39:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2019-09-07 18:39:15,183 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:39:15,183 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:15,184 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:39:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:39:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1919793202, now seen corresponding path program 1 times [2019-09-07 18:39:15,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:39:15,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:39:15,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:39:15,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:39:15,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:39:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:39:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 117 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 18:39:15,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:39:15,639 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 18:39:15,658 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 18:39:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:39:15,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:39:15,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:39:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:39:15,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:39:15,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:39:15,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:39:15,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:39:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:39:15,868 INFO L87 Difference]: Start difference. First operand 93891 states and 131781 transitions. Second operand 9 states. [2019-09-07 18:39:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:39:30,586 INFO L93 Difference]: Finished difference Result 238098 states and 343561 transitions. [2019-09-07 18:39:30,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:39:30,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2019-09-07 18:39:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:39:31,049 INFO L225 Difference]: With dead ends: 238098 [2019-09-07 18:39:31,049 INFO L226 Difference]: Without dead ends: 144213 [2019-09-07 18:39:31,174 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:39:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144213 states. [2019-09-07 18:39:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144213 to 139477. [2019-09-07 18:39:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139477 states. [2019-09-07 18:39:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139477 states to 139477 states and 182309 transitions. [2019-09-07 18:39:33,631 INFO L78 Accepts]: Start accepts. Automaton has 139477 states and 182309 transitions. Word has length 311 [2019-09-07 18:39:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:39:33,632 INFO L475 AbstractCegarLoop]: Abstraction has 139477 states and 182309 transitions. [2019-09-07 18:39:33,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:39:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 139477 states and 182309 transitions. [2019-09-07 18:39:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-09-07 18:39:33,639 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:39:33,640 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:39:33,640 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:39:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:39:33,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1700646301, now seen corresponding path program 1 times [2019-09-07 18:39:33,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:39:33,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:39:33,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:39:33,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:39:33,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:39:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:39:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 160 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:39:33,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:39:33,898 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 18:39:33,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:39:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:39:34,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 18:39:34,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:39:34,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:39:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 18:39:34,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:39:34,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 18:39:34,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 18:39:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 18:39:34,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 18:39:34,363 INFO L87 Difference]: Start difference. First operand 139477 states and 182309 transitions. Second operand 10 states. [2019-09-07 18:40:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:40:07,882 INFO L93 Difference]: Finished difference Result 366238 states and 492809 transitions. [2019-09-07 18:40:07,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 18:40:07,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 314 [2019-09-07 18:40:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:40:08,546 INFO L225 Difference]: With dead ends: 366238 [2019-09-07 18:40:08,547 INFO L226 Difference]: Without dead ends: 225945 [2019-09-07 18:40:08,719 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=465, Invalid=1791, Unknown=0, NotChecked=0, Total=2256 [2019-09-07 18:40:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225945 states. [2019-09-07 18:40:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225945 to 219513. [2019-09-07 18:40:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219513 states. [2019-09-07 18:40:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219513 states to 219513 states and 291874 transitions. [2019-09-07 18:40:16,274 INFO L78 Accepts]: Start accepts. Automaton has 219513 states and 291874 transitions. Word has length 314 [2019-09-07 18:40:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:40:16,274 INFO L475 AbstractCegarLoop]: Abstraction has 219513 states and 291874 transitions. [2019-09-07 18:40:16,274 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 18:40:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 219513 states and 291874 transitions. [2019-09-07 18:40:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2019-09-07 18:40:16,292 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:40:16,292 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 18:40:16,293 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:40:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:40:16,293 INFO L82 PathProgramCache]: Analyzing trace with hash -21385626, now seen corresponding path program 1 times [2019-09-07 18:40:16,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:40:16,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:40:16,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:40:16,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:40:16,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:40:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:40:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 313 proven. 283 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 18:40:18,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:40:18,485 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:40:18,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:40:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:40:18,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:40:18,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:40:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2019-09-07 18:40:18,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:40:18,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 18:40:18,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 18:40:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 18:40:18,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-09-07 18:40:18,796 INFO L87 Difference]: Start difference. First operand 219513 states and 291874 transitions. Second operand 15 states. [2019-09-07 18:40:29,539 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 18:40:31,448 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-07 18:40:34,334 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-07 18:40:36,308 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-07 18:40:51,382 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2019-09-07 18:40:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:40:54,100 INFO L93 Difference]: Finished difference Result 486624 states and 646728 transitions. [2019-09-07 18:40:54,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-07 18:40:54,101 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 437 [2019-09-07 18:40:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:40:54,843 INFO L225 Difference]: With dead ends: 486624 [2019-09-07 18:40:54,843 INFO L226 Difference]: Without dead ends: 265832 [2019-09-07 18:40:55,128 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1177, Invalid=4829, Unknown=0, NotChecked=0, Total=6006 [2019-09-07 18:40:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265832 states. [2019-09-07 18:40:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265832 to 250761. [2019-09-07 18:40:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250761 states. [2019-09-07 18:41:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250761 states to 250761 states and 309462 transitions. [2019-09-07 18:41:00,220 INFO L78 Accepts]: Start accepts. Automaton has 250761 states and 309462 transitions. Word has length 437 [2019-09-07 18:41:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:41:00,220 INFO L475 AbstractCegarLoop]: Abstraction has 250761 states and 309462 transitions. [2019-09-07 18:41:00,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 18:41:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 250761 states and 309462 transitions. [2019-09-07 18:41:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2019-09-07 18:41:00,231 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:41:00,232 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 18:41:00,232 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:41:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:41:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash 438884799, now seen corresponding path program 1 times [2019-09-07 18:41:00,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:41:00,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:41:00,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:41:00,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:41:00,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:41:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:41:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 280 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:41:01,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:41:01,144 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 18:41:01,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:41:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:41:01,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:41:01,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:41:01,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:41:01,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:01,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:08,168 WARN L188 SmtUtils]: Spent 6.76 s on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2019-09-07 18:41:08,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:41:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 318 proven. 61 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 18:41:12,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:41:12,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 17 [2019-09-07 18:41:12,235 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 18:41:12,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 18:41:12,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-09-07 18:41:12,236 INFO L87 Difference]: Start difference. First operand 250761 states and 309462 transitions. Second operand 17 states. [2019-09-07 18:41:25,508 WARN L188 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-07 18:41:27,231 WARN L188 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 18:41:33,884 WARN L188 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-09-07 18:41:35,257 WARN L188 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-07 18:41:36,249 WARN L188 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-07 18:41:39,114 WARN L188 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-07 18:41:43,188 WARN L188 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-09-07 18:41:46,321 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 18:41:48,328 WARN L188 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-07 18:41:49,776 WARN L188 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-09-07 18:41:55,602 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-09-07 18:41:59,605 WARN L188 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-07 18:42:05,906 WARN L188 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-07 18:42:14,557 WARN L188 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-07 18:42:16,023 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2019-09-07 18:42:22,323 WARN L188 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 18:42:29,498 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-07 18:42:33,726 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-07 18:42:35,417 WARN L188 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-07 18:42:37,061 WARN L188 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-07 18:42:44,257 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-07 18:42:45,984 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-07 18:42:47,615 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 18:42:49,376 WARN L188 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 18:43:03,447 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-07 18:43:11,904 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-07 18:43:22,669 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-07 18:43:36,755 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-07 18:43:39,781 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 18:43:48,104 WARN L188 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 18:44:02,277 WARN L188 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-07 18:44:35,097 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-09-07 18:44:38,589 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2019-09-07 18:45:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:45:03,834 INFO L93 Difference]: Finished difference Result 665761 states and 857265 transitions. [2019-09-07 18:45:03,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2019-09-07 18:45:03,837 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 436 [2019-09-07 18:45:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:45:05,821 INFO L225 Difference]: With dead ends: 665761 [2019-09-07 18:45:05,822 INFO L226 Difference]: Without dead ends: 409066 [2019-09-07 18:45:06,113 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 571 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12680 ImplicationChecksByTransitivity, 63.4s TimeCoverageRelationStatistics Valid=3908, Invalid=27235, Unknown=9, NotChecked=0, Total=31152 [2019-09-07 18:45:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409066 states. [2019-09-07 18:45:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409066 to 388455. [2019-09-07 18:45:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388455 states. [2019-09-07 18:45:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388455 states to 388455 states and 465852 transitions. [2019-09-07 18:45:23,615 INFO L78 Accepts]: Start accepts. Automaton has 388455 states and 465852 transitions. Word has length 436 [2019-09-07 18:45:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:45:23,616 INFO L475 AbstractCegarLoop]: Abstraction has 388455 states and 465852 transitions. [2019-09-07 18:45:23,616 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 18:45:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 388455 states and 465852 transitions. [2019-09-07 18:45:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2019-09-07 18:45:23,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:45:23,635 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:45:23,636 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:45:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:45:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash -312857181, now seen corresponding path program 1 times [2019-09-07 18:45:23,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:45:23,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:45:23,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:45:23,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:45:23,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:45:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:45:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 519 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-09-07 18:45:23,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:45:23,976 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 18:45:23,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:45:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:45:24,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:45:24,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:45:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 519 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-09-07 18:45:25,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:45:25,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:45:25,120 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:45:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:45:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:45:25,121 INFO L87 Difference]: Start difference. First operand 388455 states and 465852 transitions. Second operand 9 states. [2019-09-07 18:45:46,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:45:46,664 INFO L93 Difference]: Finished difference Result 775856 states and 935156 transitions. [2019-09-07 18:45:46,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:45:46,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 536 [2019-09-07 18:45:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:45:47,848 INFO L225 Difference]: With dead ends: 775856 [2019-09-07 18:45:47,849 INFO L226 Difference]: Without dead ends: 385820 [2019-09-07 18:45:48,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:45:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385820 states. [2019-09-07 18:45:53,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385820 to 379740. [2019-09-07 18:45:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379740 states. [2019-09-07 18:45:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379740 states to 379740 states and 437112 transitions. [2019-09-07 18:45:54,301 INFO L78 Accepts]: Start accepts. Automaton has 379740 states and 437112 transitions. Word has length 536 [2019-09-07 18:45:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:45:54,302 INFO L475 AbstractCegarLoop]: Abstraction has 379740 states and 437112 transitions. [2019-09-07 18:45:54,302 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:45:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 379740 states and 437112 transitions. [2019-09-07 18:45:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2019-09-07 18:45:54,317 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:45:54,318 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:45:54,318 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:45:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:45:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1326103835, now seen corresponding path program 1 times [2019-09-07 18:45:54,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:45:54,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:45:54,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:45:54,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:45:54,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:45:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:45:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 441 proven. 221 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-09-07 18:45:59,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:45:59,711 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:45:59,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:45:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:45:59,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:45:59,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:46:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 575 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-09-07 18:46:00,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:46:00,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 18:46:00,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 18:46:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 18:46:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 18:46:00,065 INFO L87 Difference]: Start difference. First operand 379740 states and 437112 transitions. Second operand 11 states. [2019-09-07 18:46:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:46:23,255 INFO L93 Difference]: Finished difference Result 775244 states and 891950 transitions. [2019-09-07 18:46:23,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 18:46:23,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 564 [2019-09-07 18:46:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:46:24,258 INFO L225 Difference]: With dead ends: 775244 [2019-09-07 18:46:24,258 INFO L226 Difference]: Without dead ends: 390337 [2019-09-07 18:46:24,636 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2019-09-07 18:46:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390337 states. [2019-09-07 18:46:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390337 to 378620. [2019-09-07 18:46:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378620 states. [2019-09-07 18:46:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378620 states to 378620 states and 423883 transitions. [2019-09-07 18:46:37,787 INFO L78 Accepts]: Start accepts. Automaton has 378620 states and 423883 transitions. Word has length 564 [2019-09-07 18:46:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:46:37,788 INFO L475 AbstractCegarLoop]: Abstraction has 378620 states and 423883 transitions. [2019-09-07 18:46:37,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 18:46:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 378620 states and 423883 transitions. [2019-09-07 18:46:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2019-09-07 18:46:37,803 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:46:37,803 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:46:37,804 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:46:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:46:37,804 INFO L82 PathProgramCache]: Analyzing trace with hash 269575514, now seen corresponding path program 1 times [2019-09-07 18:46:37,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:46:37,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:46:37,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:46:37,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:46:37,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:46:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:46:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 470 proven. 59 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-09-07 18:46:39,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:46:39,260 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:46:39,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:46:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:46:39,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:46:39,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:46:39,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:46:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-09-07 18:46:43,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:46:43,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 18:46:43,599 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 18:46:43,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 18:46:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-07 18:46:43,600 INFO L87 Difference]: Start difference. First operand 378620 states and 423883 transitions. Second operand 12 states. [2019-09-07 18:47:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:47:12,539 INFO L93 Difference]: Finished difference Result 778440 states and 874489 transitions. [2019-09-07 18:47:12,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 18:47:12,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 577 [2019-09-07 18:47:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:47:13,632 INFO L225 Difference]: With dead ends: 778440 [2019-09-07 18:47:13,632 INFO L226 Difference]: Without dead ends: 399797 [2019-09-07 18:47:14,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 594 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2019-09-07 18:47:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399797 states. [2019-09-07 18:47:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399797 to 379070. [2019-09-07 18:47:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379070 states. [2019-09-07 18:47:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379070 states to 379070 states and 419144 transitions. [2019-09-07 18:47:21,388 INFO L78 Accepts]: Start accepts. Automaton has 379070 states and 419144 transitions. Word has length 577 [2019-09-07 18:47:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:47:21,389 INFO L475 AbstractCegarLoop]: Abstraction has 379070 states and 419144 transitions. [2019-09-07 18:47:21,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 18:47:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 379070 states and 419144 transitions. [2019-09-07 18:47:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2019-09-07 18:47:21,401 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:47:21,401 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:47:21,402 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:47:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:47:21,402 INFO L82 PathProgramCache]: Analyzing trace with hash -54590502, now seen corresponding path program 1 times [2019-09-07 18:47:21,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:47:21,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:47:21,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:47:21,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:47:21,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:47:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:47:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 475 proven. 343 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-09-07 18:47:28,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:47:28,043 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:47:28,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:47:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:47:28,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 18:47:28,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:47:28,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:47:28,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:47:28,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:47:28,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:47:28,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:47:31,835 WARN L188 SmtUtils]: Spent 3.50 s on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-09-07 18:47:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 556 proven. 191 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-09-07 18:47:32,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:47:32,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-07 18:47:32,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 18:47:32,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 18:47:32,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-09-07 18:47:32,373 INFO L87 Difference]: Start difference. First operand 379070 states and 419144 transitions. Second operand 20 states. [2019-09-07 18:47:34,188 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-07 18:47:37,948 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-07 18:47:41,430 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-07 18:47:44,254 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-07 18:47:51,445 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-07 18:47:55,678 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-07 18:47:56,559 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-07 18:47:56,850 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 18:47:57,391 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-07 18:47:59,379 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-07 18:48:00,156 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-07 18:48:08,011 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2019-09-07 18:48:20,530 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 18:48:23,779 WARN L188 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 58 [2019-09-07 18:48:35,396 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-07 18:48:40,135 WARN L188 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-07 18:48:43,476 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-07 18:48:50,102 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 18:48:52,029 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-07 18:48:53,037 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2019-09-07 18:48:53,652 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 18:49:01,501 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-07 18:49:07,281 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-07 18:49:11,333 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-07 18:49:12,045 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-07 18:49:12,772 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-07 18:49:15,620 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-07 18:49:16,138 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-07 18:49:21,175 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 18:49:27,226 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 58 [2019-09-07 18:49:43,848 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-07 18:49:45,019 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-07 18:49:50,490 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2019-09-07 18:49:54,757 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-07 18:49:57,278 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-07 18:49:58,140 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-07 18:49:58,635 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 18:50:00,268 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50