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/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:34:48,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:34:48,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:34:48,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:34:48,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:34:48,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:34:48,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:34:48,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:34:48,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:34:48,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:34:48,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:34:48,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:34:48,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:34:48,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:34:48,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:34:48,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:34:48,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:34:48,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:34:48,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:34:48,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:34:48,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:34:48,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:34:48,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:34:48,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:34:48,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:34:48,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:34:48,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:34:48,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:34:48,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:34:48,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:34:48,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:34:48,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:34:48,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:34:48,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:34:48,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:34:48,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:34:48,692 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 [2019-09-08 07:34:48,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:34:48,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:34:48,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:34:48,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:34:48,708 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:34:48,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:34:48,709 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:34:48,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:34:48,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:34:48,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:34:48,710 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:34:48,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:34:48,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:34:48,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:34:48,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:34:48,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:34:48,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:34:48,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:34:48,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:34:48,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:34:48,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:34:48,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:34:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:34:48,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:34:48,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:34:48,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:34:48,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:34:48,773 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:34:48,773 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:34:48,774 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2019-09-08 07:34:48,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7665bc5b7/b91cfbc8b4bb48d38e7cb5392aa3f906/FLAG4e87ce050 [2019-09-08 07:34:49,213 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:34:49,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2019-09-08 07:34:49,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7665bc5b7/b91cfbc8b4bb48d38e7cb5392aa3f906/FLAG4e87ce050 [2019-09-08 07:34:49,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7665bc5b7/b91cfbc8b4bb48d38e7cb5392aa3f906 [2019-09-08 07:34:49,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:34:49,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:34:49,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:34:49,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:34:49,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:34:49,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:34:49" (1/1) ... [2019-09-08 07:34:49,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296f8ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:49, skipping insertion in model container [2019-09-08 07:34:49,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:34:49" (1/1) ... [2019-09-08 07:34:49,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:34:49,624 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:34:50,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:34:50,051 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:34:50,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:34:50,124 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:34:50,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50 WrapperNode [2019-09-08 07:34:50,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:34:50,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:34:50,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:34:50,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:34:50,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (1/1) ... [2019-09-08 07:34:50,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:34:50,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:34:50,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:34:50,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:34:50,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (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 [2019-09-08 07:34:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:34:50,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:34:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:34:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:34:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:34:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:34:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:34:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:34:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:34:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:34:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:34:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:34:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:34:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:34:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:34:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:34:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:34:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:34:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:34:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:34:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:34:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:34:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:34:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:34:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:34:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:34:50,962 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:34:50,962 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:34:50,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:34:50 BoogieIcfgContainer [2019-09-08 07:34:50,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:34:50,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:34:50,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:34:50,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:34:50,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:34:49" (1/3) ... [2019-09-08 07:34:50,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc3132e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:34:50, skipping insertion in model container [2019-09-08 07:34:50,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:34:50" (2/3) ... [2019-09-08 07:34:50,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc3132e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:34:50, skipping insertion in model container [2019-09-08 07:34:50,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:34:50" (3/3) ... [2019-09-08 07:34:50,972 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2019-09-08 07:34:50,982 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:34:50,991 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:34:51,008 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:34:51,040 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:34:51,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:34:51,041 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:34:51,042 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:34:51,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:34:51,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:34:51,042 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:34:51,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:34:51,043 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:34:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2019-09-08 07:34:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 07:34:51,070 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:51,071 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] [2019-09-08 07:34:51,073 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash -985544471, now seen corresponding path program 1 times [2019-09-08 07:34:51,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:51,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:51,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:51,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:51,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:51,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:51,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:34:51,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:34:51,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:34:51,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:34:51,511 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 5 states. [2019-09-08 07:34:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:51,628 INFO L93 Difference]: Finished difference Result 224 states and 331 transitions. [2019-09-08 07:34:51,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:34:51,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2019-09-08 07:34:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:51,643 INFO L225 Difference]: With dead ends: 224 [2019-09-08 07:34:51,643 INFO L226 Difference]: Without dead ends: 123 [2019-09-08 07:34:51,648 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:34:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-09-08 07:34:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-09-08 07:34:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-08 07:34:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2019-09-08 07:34:51,702 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 54 [2019-09-08 07:34:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:51,703 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2019-09-08 07:34:51,703 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:34:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2019-09-08 07:34:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-08 07:34:51,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:51,707 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:51,708 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:51,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1801507920, now seen corresponding path program 1 times [2019-09-08 07:34:51,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:51,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:51,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:51,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:51,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:52,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:52,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:34:52,094 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:34:52,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:34:52,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:34:52,095 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand 11 states. [2019-09-08 07:34:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:55,240 INFO L93 Difference]: Finished difference Result 955 states and 1394 transitions. [2019-09-08 07:34:55,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-08 07:34:55,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2019-09-08 07:34:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:55,254 INFO L225 Difference]: With dead ends: 955 [2019-09-08 07:34:55,254 INFO L226 Difference]: Without dead ends: 868 [2019-09-08 07:34:55,257 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 07:34:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2019-09-08 07:34:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 738. [2019-09-08 07:34:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-09-08 07:34:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1073 transitions. [2019-09-08 07:34:55,404 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1073 transitions. Word has length 77 [2019-09-08 07:34:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:55,405 INFO L475 AbstractCegarLoop]: Abstraction has 738 states and 1073 transitions. [2019-09-08 07:34:55,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:34:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1073 transitions. [2019-09-08 07:34:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:34:55,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:55,410 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:55,410 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:55,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1577359652, now seen corresponding path program 1 times [2019-09-08 07:34:55,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:55,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:55,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:55,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:55,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:55,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:55,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:34:55,561 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:34:55,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:34:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:34:55,562 INFO L87 Difference]: Start difference. First operand 738 states and 1073 transitions. Second operand 11 states. [2019-09-08 07:34:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:55,712 INFO L93 Difference]: Finished difference Result 856 states and 1256 transitions. [2019-09-08 07:34:55,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 07:34:55,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2019-09-08 07:34:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:55,721 INFO L225 Difference]: With dead ends: 856 [2019-09-08 07:34:55,721 INFO L226 Difference]: Without dead ends: 854 [2019-09-08 07:34:55,724 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:34:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-09-08 07:34:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 792. [2019-09-08 07:34:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-09-08 07:34:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1127 transitions. [2019-09-08 07:34:55,780 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1127 transitions. Word has length 78 [2019-09-08 07:34:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:55,780 INFO L475 AbstractCegarLoop]: Abstraction has 792 states and 1127 transitions. [2019-09-08 07:34:55,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:34:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1127 transitions. [2019-09-08 07:34:55,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 07:34:55,783 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:55,784 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:55,784 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash 503716008, now seen corresponding path program 1 times [2019-09-08 07:34:55,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:55,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:55,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:55,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:55,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:55,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:55,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:34:55,894 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:34:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:34:55,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:34:55,894 INFO L87 Difference]: Start difference. First operand 792 states and 1127 transitions. Second operand 7 states. [2019-09-08 07:34:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:56,552 INFO L93 Difference]: Finished difference Result 3526 states and 5127 transitions. [2019-09-08 07:34:56,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:34:56,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-09-08 07:34:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:56,573 INFO L225 Difference]: With dead ends: 3526 [2019-09-08 07:34:56,573 INFO L226 Difference]: Without dead ends: 2770 [2019-09-08 07:34:56,577 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:34:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2019-09-08 07:34:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2764. [2019-09-08 07:34:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2019-09-08 07:34:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3990 transitions. [2019-09-08 07:34:56,727 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3990 transitions. Word has length 79 [2019-09-08 07:34:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:56,727 INFO L475 AbstractCegarLoop]: Abstraction has 2764 states and 3990 transitions. [2019-09-08 07:34:56,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:34:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3990 transitions. [2019-09-08 07:34:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:34:56,731 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:56,731 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:56,731 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1624312736, now seen corresponding path program 1 times [2019-09-08 07:34:56,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:56,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:56,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:56,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:56,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:56,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:56,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:34:56,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:34:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:34:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:34:56,839 INFO L87 Difference]: Start difference. First operand 2764 states and 3990 transitions. Second operand 9 states. [2019-09-08 07:34:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:57,631 INFO L93 Difference]: Finished difference Result 5927 states and 8647 transitions. [2019-09-08 07:34:57,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:34:57,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:34:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:57,654 INFO L225 Difference]: With dead ends: 5927 [2019-09-08 07:34:57,655 INFO L226 Difference]: Without dead ends: 3832 [2019-09-08 07:34:57,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:34:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2019-09-08 07:34:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2877. [2019-09-08 07:34:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2019-09-08 07:34:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4154 transitions. [2019-09-08 07:34:57,848 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4154 transitions. Word has length 80 [2019-09-08 07:34:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:57,849 INFO L475 AbstractCegarLoop]: Abstraction has 2877 states and 4154 transitions. [2019-09-08 07:34:57,849 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:34:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4154 transitions. [2019-09-08 07:34:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:34:57,853 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:57,853 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:57,853 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1499169980, now seen corresponding path program 1 times [2019-09-08 07:34:57,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:57,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:57,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:57,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:57,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:57,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:57,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:34:57,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:34:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:34:57,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:34:57,999 INFO L87 Difference]: Start difference. First operand 2877 states and 4154 transitions. Second operand 9 states. [2019-09-08 07:34:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:34:58,846 INFO L93 Difference]: Finished difference Result 6995 states and 10128 transitions. [2019-09-08 07:34:58,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:34:58,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:34:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:34:58,870 INFO L225 Difference]: With dead ends: 6995 [2019-09-08 07:34:58,871 INFO L226 Difference]: Without dead ends: 4175 [2019-09-08 07:34:58,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:34:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2019-09-08 07:34:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 2873. [2019-09-08 07:34:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2019-09-08 07:34:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4146 transitions. [2019-09-08 07:34:59,107 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4146 transitions. Word has length 80 [2019-09-08 07:34:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:34:59,109 INFO L475 AbstractCegarLoop]: Abstraction has 2873 states and 4146 transitions. [2019-09-08 07:34:59,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:34:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4146 transitions. [2019-09-08 07:34:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:34:59,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:34:59,118 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:34:59,118 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:34:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:34:59,126 INFO L82 PathProgramCache]: Analyzing trace with hash 852886168, now seen corresponding path program 1 times [2019-09-08 07:34:59,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:34:59,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:34:59,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:59,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:34:59,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:34:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:34:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:34:59,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:34:59,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:34:59,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:34:59,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:34:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:34:59,300 INFO L87 Difference]: Start difference. First operand 2873 states and 4146 transitions. Second operand 9 states. [2019-09-08 07:35:00,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:00,114 INFO L93 Difference]: Finished difference Result 6403 states and 9215 transitions. [2019-09-08 07:35:00,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:35:00,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:35:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:00,134 INFO L225 Difference]: With dead ends: 6403 [2019-09-08 07:35:00,134 INFO L226 Difference]: Without dead ends: 3623 [2019-09-08 07:35:00,146 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:35:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2019-09-08 07:35:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 2870. [2019-09-08 07:35:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2019-09-08 07:35:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4139 transitions. [2019-09-08 07:35:00,356 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4139 transitions. Word has length 80 [2019-09-08 07:35:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:00,356 INFO L475 AbstractCegarLoop]: Abstraction has 2870 states and 4139 transitions. [2019-09-08 07:35:00,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:35:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4139 transitions. [2019-09-08 07:35:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:35:00,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:00,360 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:00,361 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:00,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1238151598, now seen corresponding path program 1 times [2019-09-08 07:35:00,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:00,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:00,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:00,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:00,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:00,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:00,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:35:00,524 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:35:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:35:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:35:00,525 INFO L87 Difference]: Start difference. First operand 2870 states and 4139 transitions. Second operand 9 states. [2019-09-08 07:35:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:01,577 INFO L93 Difference]: Finished difference Result 5817 states and 8321 transitions. [2019-09-08 07:35:01,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:35:01,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:35:01,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:01,602 INFO L225 Difference]: With dead ends: 5817 [2019-09-08 07:35:01,602 INFO L226 Difference]: Without dead ends: 3074 [2019-09-08 07:35:01,613 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:35:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2019-09-08 07:35:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2884. [2019-09-08 07:35:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2019-09-08 07:35:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4158 transitions. [2019-09-08 07:35:01,916 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4158 transitions. Word has length 80 [2019-09-08 07:35:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:01,917 INFO L475 AbstractCegarLoop]: Abstraction has 2884 states and 4158 transitions. [2019-09-08 07:35:01,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:35:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4158 transitions. [2019-09-08 07:35:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 07:35:01,927 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:01,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:01,928 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:01,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1473763509, now seen corresponding path program 1 times [2019-09-08 07:35:01,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:01,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:01,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:01,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:01,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 07:35:02,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:02,076 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:35:02,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:35:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:02,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:35:02,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:35:02,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:35:02,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:35:02,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:35:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:35:02,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:35:02,361 INFO L87 Difference]: Start difference. First operand 2884 states and 4158 transitions. Second operand 8 states. [2019-09-08 07:35:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:03,240 INFO L93 Difference]: Finished difference Result 6376 states and 9236 transitions. [2019-09-08 07:35:03,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:35:03,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-09-08 07:35:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:03,260 INFO L225 Difference]: With dead ends: 6376 [2019-09-08 07:35:03,260 INFO L226 Difference]: Without dead ends: 4313 [2019-09-08 07:35:03,267 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:35:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2019-09-08 07:35:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 4151. [2019-09-08 07:35:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4151 states. [2019-09-08 07:35:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 5927 transitions. [2019-09-08 07:35:03,602 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 5927 transitions. Word has length 123 [2019-09-08 07:35:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:03,602 INFO L475 AbstractCegarLoop]: Abstraction has 4151 states and 5927 transitions. [2019-09-08 07:35:03,602 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:35:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 5927 transitions. [2019-09-08 07:35:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:35:03,607 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:03,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:03,608 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:03,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1251275679, now seen corresponding path program 1 times [2019-09-08 07:35:03,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:03,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:03,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:03,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:03,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-08 07:35:03,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:03,722 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:35:03,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:03,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:35:03,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:04,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:35:04,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:35:04,019 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:35:04,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:35:04,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:35:04,021 INFO L87 Difference]: Start difference. First operand 4151 states and 5927 transitions. Second operand 4 states. [2019-09-08 07:35:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:04,421 INFO L93 Difference]: Finished difference Result 11664 states and 16829 transitions. [2019-09-08 07:35:04,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:35:04,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-09-08 07:35:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:04,463 INFO L225 Difference]: With dead ends: 11664 [2019-09-08 07:35:04,463 INFO L226 Difference]: Without dead ends: 7613 [2019-09-08 07:35:04,478 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:35:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2019-09-08 07:35:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 7083. [2019-09-08 07:35:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7083 states. [2019-09-08 07:35:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 10004 transitions. [2019-09-08 07:35:05,071 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 10004 transitions. Word has length 125 [2019-09-08 07:35:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:05,071 INFO L475 AbstractCegarLoop]: Abstraction has 7083 states and 10004 transitions. [2019-09-08 07:35:05,071 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:35:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 10004 transitions. [2019-09-08 07:35:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:35:05,078 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:05,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:05,078 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:05,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1376418435, now seen corresponding path program 1 times [2019-09-08 07:35:05,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:05,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:05,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:05,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:05,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 07:35:05,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:05,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:35:05,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:35:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:05,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:35:05,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:05,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:35:05,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:35:05,522 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:35:05,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:35:05,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:35:05,523 INFO L87 Difference]: Start difference. First operand 7083 states and 10004 transitions. Second operand 13 states. [2019-09-08 07:35:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:08,660 INFO L93 Difference]: Finished difference Result 30219 states and 43342 transitions. [2019-09-08 07:35:08,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:35:08,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2019-09-08 07:35:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:08,758 INFO L225 Difference]: With dead ends: 30219 [2019-09-08 07:35:08,758 INFO L226 Difference]: Without dead ends: 23290 [2019-09-08 07:35:08,789 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:35:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23290 states. [2019-09-08 07:35:09,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23290 to 18988. [2019-09-08 07:35:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18988 states. [2019-09-08 07:35:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18988 states to 18988 states and 26251 transitions. [2019-09-08 07:35:10,020 INFO L78 Accepts]: Start accepts. Automaton has 18988 states and 26251 transitions. Word has length 125 [2019-09-08 07:35:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:10,021 INFO L475 AbstractCegarLoop]: Abstraction has 18988 states and 26251 transitions. [2019-09-08 07:35:10,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:35:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 18988 states and 26251 transitions. [2019-09-08 07:35:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-08 07:35:10,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:10,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:10,029 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash 832874959, now seen corresponding path program 1 times [2019-09-08 07:35:10,030 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:10,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:10,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:10,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:10,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:35:10,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:10,117 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 [2019-09-08 07:35:10,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:10,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:35:10,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:35:10,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:35:10,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:35:10,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:35:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:35:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:35:10,407 INFO L87 Difference]: Start difference. First operand 18988 states and 26251 transitions. Second operand 13 states. [2019-09-08 07:35:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:14,962 INFO L93 Difference]: Finished difference Result 92972 states and 131251 transitions. [2019-09-08 07:35:14,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:35:14,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 126 [2019-09-08 07:35:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:15,403 INFO L225 Difference]: With dead ends: 92972 [2019-09-08 07:35:15,403 INFO L226 Difference]: Without dead ends: 74300 [2019-09-08 07:35:15,469 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:35:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74300 states. [2019-09-08 07:35:20,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74300 to 63488. [2019-09-08 07:35:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63488 states. [2019-09-08 07:35:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63488 states to 63488 states and 86412 transitions. [2019-09-08 07:35:20,245 INFO L78 Accepts]: Start accepts. Automaton has 63488 states and 86412 transitions. Word has length 126 [2019-09-08 07:35:20,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:20,246 INFO L475 AbstractCegarLoop]: Abstraction has 63488 states and 86412 transitions. [2019-09-08 07:35:20,246 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:35:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand 63488 states and 86412 transitions. [2019-09-08 07:35:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:35:20,264 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:20,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:20,265 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1071552111, now seen corresponding path program 1 times [2019-09-08 07:35:20,266 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:20,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:20,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:20,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:20,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:35:20,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:20,353 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:35:20,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:20,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:35:20,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:20,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:35:20,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:35:20,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:35:20,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:35:20,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:35:20,631 INFO L87 Difference]: Start difference. First operand 63488 states and 86412 transitions. Second operand 13 states. [2019-09-08 07:35:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:31,807 INFO L93 Difference]: Finished difference Result 289141 states and 399830 transitions. [2019-09-08 07:35:31,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:35:31,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 127 [2019-09-08 07:35:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:32,532 INFO L225 Difference]: With dead ends: 289141 [2019-09-08 07:35:32,533 INFO L226 Difference]: Without dead ends: 226251 [2019-09-08 07:35:32,723 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 07:35:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226251 states. [2019-09-08 07:35:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226251 to 211548. [2019-09-08 07:35:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211548 states. [2019-09-08 07:35:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211548 states to 211548 states and 284257 transitions. [2019-09-08 07:35:47,035 INFO L78 Accepts]: Start accepts. Automaton has 211548 states and 284257 transitions. Word has length 127 [2019-09-08 07:35:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:47,036 INFO L475 AbstractCegarLoop]: Abstraction has 211548 states and 284257 transitions. [2019-09-08 07:35:47,036 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:35:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 211548 states and 284257 transitions. [2019-09-08 07:35:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:35:47,091 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:47,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:47,092 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:47,092 INFO L82 PathProgramCache]: Analyzing trace with hash 45219836, now seen corresponding path program 1 times [2019-09-08 07:35:47,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:47,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:47,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:35:47,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:35:47,927 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) [2019-09-08 07:35:47,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:35:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:48,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:35:48,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:35:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:48,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:35:48,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2019-09-08 07:35:48,336 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 07:35:48,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 07:35:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-09-08 07:35:48,337 INFO L87 Difference]: Start difference. First operand 211548 states and 284257 transitions. Second operand 18 states. [2019-09-08 07:36:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:00,877 INFO L93 Difference]: Finished difference Result 398704 states and 533895 transitions. [2019-09-08 07:36:00,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 07:36:00,877 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2019-09-08 07:36:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:02,205 INFO L225 Difference]: With dead ends: 398704 [2019-09-08 07:36:02,205 INFO L226 Difference]: Without dead ends: 319754 [2019-09-08 07:36:02,358 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2019-09-08 07:36:02,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319754 states. [2019-09-08 07:36:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319754 to 317619. [2019-09-08 07:36:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317619 states. [2019-09-08 07:36:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317619 states to 317619 states and 424863 transitions. [2019-09-08 07:36:23,968 INFO L78 Accepts]: Start accepts. Automaton has 317619 states and 424863 transitions. Word has length 129 [2019-09-08 07:36:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:23,969 INFO L475 AbstractCegarLoop]: Abstraction has 317619 states and 424863 transitions. [2019-09-08 07:36:23,969 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 07:36:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 317619 states and 424863 transitions. [2019-09-08 07:36:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:36:24,012 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:24,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:24,012 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash -370322024, now seen corresponding path program 1 times [2019-09-08 07:36:24,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:24,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:24,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:24,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:24,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:36:24,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:24,080 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:36:24,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:24,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:36:24,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:24,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:24,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:36:24,261 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:36:24,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:36:24,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:24,261 INFO L87 Difference]: Start difference. First operand 317619 states and 424863 transitions. Second operand 4 states. [2019-09-08 07:36:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:45,031 INFO L93 Difference]: Finished difference Result 748442 states and 1012167 transitions. [2019-09-08 07:36:45,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:36:45,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:36:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:46,289 INFO L225 Difference]: With dead ends: 748442 [2019-09-08 07:36:46,289 INFO L226 Difference]: Without dead ends: 431736 [2019-09-08 07:36:53,548 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431736 states. [2019-09-08 07:37:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431736 to 389287. [2019-09-08 07:37:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389287 states. [2019-09-08 07:37:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389287 states to 389287 states and 509626 transitions. [2019-09-08 07:37:19,496 INFO L78 Accepts]: Start accepts. Automaton has 389287 states and 509626 transitions. Word has length 129 [2019-09-08 07:37:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:19,496 INFO L475 AbstractCegarLoop]: Abstraction has 389287 states and 509626 transitions. [2019-09-08 07:37:19,496 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:37:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 389287 states and 509626 transitions. [2019-09-08 07:37:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:37:19,533 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:19,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:19,533 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash -919477318, now seen corresponding path program 1 times [2019-09-08 07:37:19,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:19,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:19,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:37:19,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:19,599 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 [2019-09-08 07:37:19,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:19,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:37:19,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:37:19,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:37:19,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:37:19,754 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:37:19,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:37:19,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:37:19,756 INFO L87 Difference]: Start difference. First operand 389287 states and 509626 transitions. Second operand 4 states. [2019-09-08 07:37:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:54,701 INFO L93 Difference]: Finished difference Result 868907 states and 1148160 transitions. [2019-09-08 07:37:54,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:37:54,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:37:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:55,920 INFO L225 Difference]: With dead ends: 868907 [2019-09-08 07:37:55,921 INFO L226 Difference]: Without dead ends: 481656 [2019-09-08 07:37:56,308 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:37:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481656 states. [2019-09-08 07:38:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481656 to 452112. [2019-09-08 07:38:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452112 states. [2019-09-08 07:38:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452112 states to 452112 states and 573016 transitions. [2019-09-08 07:38:33,053 INFO L78 Accepts]: Start accepts. Automaton has 452112 states and 573016 transitions. Word has length 129 [2019-09-08 07:38:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:38:33,053 INFO L475 AbstractCegarLoop]: Abstraction has 452112 states and 573016 transitions. [2019-09-08 07:38:33,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:38:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 452112 states and 573016 transitions. [2019-09-08 07:38:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:38:33,130 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:38:33,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:38:33,131 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:38:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:38:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash 232437784, now seen corresponding path program 1 times [2019-09-08 07:38:33,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:38:33,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:38:33,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:33,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:38:33,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:38:33,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:38:33,204 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) [2019-09-08 07:38:33,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:38:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:33,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:38:33,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:38:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:38:33,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:38:33,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:38:33,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:38:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:38:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:38:33,374 INFO L87 Difference]: Start difference. First operand 452112 states and 573016 transitions. Second operand 4 states. [2019-09-08 07:39:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:39:07,745 INFO L93 Difference]: Finished difference Result 997179 states and 1278330 transitions. [2019-09-08 07:39:07,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:39:07,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-09-08 07:39:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:39:19,606 INFO L225 Difference]: With dead ends: 997179 [2019-09-08 07:39:19,606 INFO L226 Difference]: Without dead ends: 551123 [2019-09-08 07:39:20,037 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:39:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551123 states. [2019-09-08 07:39:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551123 to 520945. [2019-09-08 07:39:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520945 states. [2019-09-08 07:40:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520945 states to 520945 states and 636718 transitions. [2019-09-08 07:40:00,113 INFO L78 Accepts]: Start accepts. Automaton has 520945 states and 636718 transitions. Word has length 129 [2019-09-08 07:40:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:00,114 INFO L475 AbstractCegarLoop]: Abstraction has 520945 states and 636718 transitions. [2019-09-08 07:40:00,114 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:40:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 520945 states and 636718 transitions. [2019-09-08 07:40:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:40:00,230 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:00,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:00,230 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash -970361389, now seen corresponding path program 1 times [2019-09-08 07:40:00,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:00,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:00,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:00,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:00,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:40:00,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:00,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:40:00,391 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:40:00,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:40:00,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:40:00,393 INFO L87 Difference]: Start difference. First operand 520945 states and 636718 transitions. Second operand 11 states. [2019-09-08 07:40:05,932 WARN L188 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2019-09-08 07:40:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:53,346 INFO L93 Difference]: Finished difference Result 908687 states and 1116410 transitions. [2019-09-08 07:40:53,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-08 07:40:53,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 130 [2019-09-08 07:40:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:55,299 INFO L225 Difference]: With dead ends: 908687 [2019-09-08 07:40:55,299 INFO L226 Difference]: Without dead ends: 806350 [2019-09-08 07:40:55,561 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=575, Invalid=2287, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 07:40:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806350 states. [2019-09-08 07:41:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806350 to 708626. [2019-09-08 07:41:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708626 states. [2019-09-08 07:41:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708626 states to 708626 states and 866113 transitions. [2019-09-08 07:41:59,321 INFO L78 Accepts]: Start accepts. Automaton has 708626 states and 866113 transitions. Word has length 130 [2019-09-08 07:41:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:41:59,321 INFO L475 AbstractCegarLoop]: Abstraction has 708626 states and 866113 transitions. [2019-09-08 07:41:59,321 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:41:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 708626 states and 866113 transitions. [2019-09-08 07:41:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:41:59,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:41:59,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:41:59,453 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:41:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:41:59,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1355732575, now seen corresponding path program 1 times [2019-09-08 07:41:59,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:41:59,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:41:59,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:59,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:59,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:41:59,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:41:59,667 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 [2019-09-08 07:41:59,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:59,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:41:59,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:42:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:42:00,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:42:00,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2019-09-08 07:42:00,092 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:42:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:42:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:42:00,092 INFO L87 Difference]: Start difference. First operand 708626 states and 866113 transitions. Second operand 22 states. [2019-09-08 07:42:12,198 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2019-09-08 07:43:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:43:13,396 INFO L93 Difference]: Finished difference Result 1087175 states and 1335065 transitions. [2019-09-08 07:43:13,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-08 07:43:13,397 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2019-09-08 07:43:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:43:16,101 INFO L225 Difference]: With dead ends: 1087175 [2019-09-08 07:43:16,102 INFO L226 Difference]: Without dead ends: 972001 [2019-09-08 07:43:16,380 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=788, Invalid=3502, Unknown=0, NotChecked=0, Total=4290 [2019-09-08 07:43:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972001 states. [2019-09-08 07:44:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972001 to 883111. [2019-09-08 07:44:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883111 states. [2019-09-08 07:44:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883111 states to 883111 states and 1079260 transitions. [2019-09-08 07:44:38,313 INFO L78 Accepts]: Start accepts. Automaton has 883111 states and 1079260 transitions. Word has length 130 [2019-09-08 07:44:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:44:38,313 INFO L475 AbstractCegarLoop]: Abstraction has 883111 states and 1079260 transitions. [2019-09-08 07:44:38,313 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 07:44:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 883111 states and 1079260 transitions. [2019-09-08 07:44:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:44:38,412 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:44:38,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:44:38,413 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:44:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:44:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1936477343, now seen corresponding path program 1 times [2019-09-08 07:44:38,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:44:38,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:44:38,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:38,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:38,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 07:44:38,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:44:38,578 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 [2019-09-08 07:44:39,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:39,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:44:39,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:44:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:44:40,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:44:40,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 19 [2019-09-08 07:44:40,016 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 07:44:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 07:44:40,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2019-09-08 07:44:40,016 INFO L87 Difference]: Start difference. First operand 883111 states and 1079260 transitions. Second operand 19 states.