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.6.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:45:53,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:45:53,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:45:53,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:45:53,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:45:53,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:45:53,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:45:53,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:45:53,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:45:53,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:45:53,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:45:53,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:45:53,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:45:53,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:45:53,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:45:53,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:45:53,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:45:53,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:45:53,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:45:53,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:45:53,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:45:53,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:45:53,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:45:53,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:45:53,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:45:53,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:45:53,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:45:53,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:45:53,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:45:53,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:45:53,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:45:53,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:45:53,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:45:53,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:45:53,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:45:53,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:45:53,855 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 07:45:53,870 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:45:53,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:45:53,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:45:53,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:45:53,872 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:45:53,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:45:53,872 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:45:53,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:45:53,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:45:53,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:45:53,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:45:53,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:45:53,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:45:53,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:45:53,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:45:53,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:45:53,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:45:53,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:45:53,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:45:53,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:45:53,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:45:53,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:45:53,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:45:53,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:45:53,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:45:53,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:45:53,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:45:53,923 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:45:53,924 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:45:53,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2019-09-08 07:45:53,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0449916ef/39b21d52947a4c559bc2b3fe210ff1ad/FLAGb0b91a0d9 [2019-09-08 07:45:54,493 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:45:54,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2019-09-08 07:45:54,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0449916ef/39b21d52947a4c559bc2b3fe210ff1ad/FLAGb0b91a0d9 [2019-09-08 07:45:54,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0449916ef/39b21d52947a4c559bc2b3fe210ff1ad [2019-09-08 07:45:54,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:45:54,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:45:54,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:45:54,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:45:54,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:45:54,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:45:54" (1/1) ... [2019-09-08 07:45:54,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3110b5a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:54, skipping insertion in model container [2019-09-08 07:45:54,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:45:54" (1/1) ... [2019-09-08 07:45:54,867 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:45:54,910 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:45:55,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:45:55,376 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:45:55,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:45:55,472 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:45:55,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55 WrapperNode [2019-09-08 07:45:55,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:45:55,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:45:55,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:45:55,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:45:55,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (1/1) ... [2019-09-08 07:45:55,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:45:55,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:45:55,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:45:55,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:45:55,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (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 07:45:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:45:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:45:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2019-09-08 07:45:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:45:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:45:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:45:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:45:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:45:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:45:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:45:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:45:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:45:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:45:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:45:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:45:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:45:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:45:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:45:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:45:56,476 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:45:56,477 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:45:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:45:56 BoogieIcfgContainer [2019-09-08 07:45:56,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:45:56,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:45:56,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:45:56,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:45:56,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:45:54" (1/3) ... [2019-09-08 07:45:56,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa3f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:45:56, skipping insertion in model container [2019-09-08 07:45:56,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:45:55" (2/3) ... [2019-09-08 07:45:56,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa3f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:45:56, skipping insertion in model container [2019-09-08 07:45:56,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:45:56" (3/3) ... [2019-09-08 07:45:56,486 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2019-09-08 07:45:56,496 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:45:56,505 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:45:56,521 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:45:56,550 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:45:56,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:45:56,551 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:45:56,551 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:45:56,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:45:56,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:45:56,552 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:45:56,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:45:56,552 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:45:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-09-08 07:45:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-08 07:45:56,588 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:45:56,589 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] [2019-09-08 07:45:56,592 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:45:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:45:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1218527924, now seen corresponding path program 1 times [2019-09-08 07:45:56,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:45:56,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:45:56,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:45:56,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:45:56,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:45:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:45:57,176 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 07:45:57,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:45:57,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:45:57,184 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:45:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:45:57,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:45:57,202 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 5 states. [2019-09-08 07:45:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:45:57,360 INFO L93 Difference]: Finished difference Result 309 states and 469 transitions. [2019-09-08 07:45:57,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:45:57,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-09-08 07:45:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:45:57,375 INFO L225 Difference]: With dead ends: 309 [2019-09-08 07:45:57,376 INFO L226 Difference]: Without dead ends: 174 [2019-09-08 07:45:57,380 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 07:45:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-09-08 07:45:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2019-09-08 07:45:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-09-08 07:45:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2019-09-08 07:45:57,437 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 68 [2019-09-08 07:45:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:45:57,438 INFO L475 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2019-09-08 07:45:57,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:45:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2019-09-08 07:45:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-08 07:45:57,443 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:45:57,443 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:45:57,444 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:45:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:45:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1659078954, now seen corresponding path program 1 times [2019-09-08 07:45:57,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:45:57,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:45:57,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:45:57,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:45:57,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:45:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:45:57,870 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 07:45:57,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:45:57,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-09-08 07:45:57,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 07:45:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 07:45:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:45:57,874 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand 15 states. [2019-09-08 07:46:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:06,706 INFO L93 Difference]: Finished difference Result 1866 states and 2864 transitions. [2019-09-08 07:46:06,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-09-08 07:46:06,707 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2019-09-08 07:46:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:06,750 INFO L225 Difference]: With dead ends: 1866 [2019-09-08 07:46:06,750 INFO L226 Difference]: Without dead ends: 1745 [2019-09-08 07:46:06,759 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1707 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1105, Invalid=3865, Unknown=0, NotChecked=0, Total=4970 [2019-09-08 07:46:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2019-09-08 07:46:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1162. [2019-09-08 07:46:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2019-09-08 07:46:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1713 transitions. [2019-09-08 07:46:06,985 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1713 transitions. Word has length 108 [2019-09-08 07:46:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:06,990 INFO L475 AbstractCegarLoop]: Abstraction has 1162 states and 1713 transitions. [2019-09-08 07:46:06,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 07:46:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1713 transitions. [2019-09-08 07:46:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-08 07:46:07,006 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:07,007 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:07,007 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:07,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1362325190, now seen corresponding path program 1 times [2019-09-08 07:46:07,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:07,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:07,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:07,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:07,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:07,252 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 07:46:07,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:07,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:46:07,253 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:07,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:07,254 INFO L87 Difference]: Start difference. First operand 1162 states and 1713 transitions. Second operand 8 states. [2019-09-08 07:46:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:07,374 INFO L93 Difference]: Finished difference Result 1353 states and 2028 transitions. [2019-09-08 07:46:07,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:07,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2019-09-08 07:46:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:07,385 INFO L225 Difference]: With dead ends: 1353 [2019-09-08 07:46:07,385 INFO L226 Difference]: Without dead ends: 1351 [2019-09-08 07:46:07,386 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:46:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2019-09-08 07:46:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1243. [2019-09-08 07:46:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2019-09-08 07:46:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1794 transitions. [2019-09-08 07:46:07,471 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1794 transitions. Word has length 109 [2019-09-08 07:46:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:07,473 INFO L475 AbstractCegarLoop]: Abstraction has 1243 states and 1794 transitions. [2019-09-08 07:46:07,473 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1794 transitions. [2019-09-08 07:46:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-08 07:46:07,476 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:07,477 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:07,477 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:07,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:07,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1962088830, now seen corresponding path program 1 times [2019-09-08 07:46:07,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:07,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:07,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:07,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:07,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:07,661 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 07:46:07,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:07,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:46:07,662 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:46:07,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:46:07,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:46:07,663 INFO L87 Difference]: Start difference. First operand 1243 states and 1794 transitions. Second operand 7 states. [2019-09-08 07:46:08,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:08,790 INFO L93 Difference]: Finished difference Result 5697 states and 8367 transitions. [2019-09-08 07:46:08,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:08,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-09-08 07:46:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:08,817 INFO L225 Difference]: With dead ends: 5697 [2019-09-08 07:46:08,818 INFO L226 Difference]: Without dead ends: 4507 [2019-09-08 07:46:08,825 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 07:46:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2019-09-08 07:46:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4501. [2019-09-08 07:46:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4501 states. [2019-09-08 07:46:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 6556 transitions. [2019-09-08 07:46:09,107 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 6556 transitions. Word has length 110 [2019-09-08 07:46:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:09,108 INFO L475 AbstractCegarLoop]: Abstraction has 4501 states and 6556 transitions. [2019-09-08 07:46:09,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:46:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 6556 transitions. [2019-09-08 07:46:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:09,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:09,112 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:09,112 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:09,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1490326786, now seen corresponding path program 1 times [2019-09-08 07:46:09,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:09,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:09,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:09,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:09,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:09,240 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 07:46:09,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:09,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:09,241 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:09,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:09,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:09,242 INFO L87 Difference]: Start difference. First operand 4501 states and 6556 transitions. Second operand 9 states. [2019-09-08 07:46:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:10,493 INFO L93 Difference]: Finished difference Result 11180 states and 16348 transitions. [2019-09-08 07:46:10,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:10,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:10,535 INFO L225 Difference]: With dead ends: 11180 [2019-09-08 07:46:10,536 INFO L226 Difference]: Without dead ends: 6732 [2019-09-08 07:46:10,548 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 07:46:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2019-09-08 07:46:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 4658. [2019-09-08 07:46:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4658 states. [2019-09-08 07:46:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4658 states to 4658 states and 6779 transitions. [2019-09-08 07:46:10,836 INFO L78 Accepts]: Start accepts. Automaton has 4658 states and 6779 transitions. Word has length 111 [2019-09-08 07:46:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:10,837 INFO L475 AbstractCegarLoop]: Abstraction has 4658 states and 6779 transitions. [2019-09-08 07:46:10,837 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4658 states and 6779 transitions. [2019-09-08 07:46:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:10,842 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:10,842 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:10,843 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:10,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash -630466114, now seen corresponding path program 1 times [2019-09-08 07:46:10,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:10,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:10,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:10,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:10,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:11,016 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 07:46:11,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:11,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:11,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:11,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:11,018 INFO L87 Difference]: Start difference. First operand 4658 states and 6779 transitions. Second operand 9 states. [2019-09-08 07:46:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:12,316 INFO L93 Difference]: Finished difference Result 10711 states and 15586 transitions. [2019-09-08 07:46:12,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:12,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:12,361 INFO L225 Difference]: With dead ends: 10711 [2019-09-08 07:46:12,362 INFO L226 Difference]: Without dead ends: 6225 [2019-09-08 07:46:12,375 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 07:46:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6225 states. [2019-09-08 07:46:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6225 to 4745. [2019-09-08 07:46:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4745 states. [2019-09-08 07:46:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6901 transitions. [2019-09-08 07:46:12,700 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6901 transitions. Word has length 111 [2019-09-08 07:46:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:12,702 INFO L475 AbstractCegarLoop]: Abstraction has 4745 states and 6901 transitions. [2019-09-08 07:46:12,702 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:12,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6901 transitions. [2019-09-08 07:46:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:12,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:12,715 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:12,716 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:12,717 INFO L82 PathProgramCache]: Analyzing trace with hash 482955028, now seen corresponding path program 1 times [2019-09-08 07:46:12,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:12,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:12,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:12,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:12,891 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 07:46:12,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:12,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:12,892 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:12,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:12,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:12,893 INFO L87 Difference]: Start difference. First operand 4745 states and 6901 transitions. Second operand 9 states. [2019-09-08 07:46:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:14,020 INFO L93 Difference]: Finished difference Result 10169 states and 14752 transitions. [2019-09-08 07:46:14,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:14,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:14,049 INFO L225 Difference]: With dead ends: 10169 [2019-09-08 07:46:14,050 INFO L226 Difference]: Without dead ends: 5681 [2019-09-08 07:46:14,062 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 07:46:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2019-09-08 07:46:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 4832. [2019-09-08 07:46:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4832 states. [2019-09-08 07:46:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 7023 transitions. [2019-09-08 07:46:14,278 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 7023 transitions. Word has length 111 [2019-09-08 07:46:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:14,278 INFO L475 AbstractCegarLoop]: Abstraction has 4832 states and 7023 transitions. [2019-09-08 07:46:14,278 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 7023 transitions. [2019-09-08 07:46:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:14,281 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:14,281 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:14,282 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:14,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:14,282 INFO L82 PathProgramCache]: Analyzing trace with hash -377390433, now seen corresponding path program 1 times [2019-09-08 07:46:14,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:14,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:14,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:14,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:14,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:14,394 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 07:46:14,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:14,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:14,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:14,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:14,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:14,396 INFO L87 Difference]: Start difference. First operand 4832 states and 7023 transitions. Second operand 9 states. [2019-09-08 07:46:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:15,558 INFO L93 Difference]: Finished difference Result 9627 states and 13918 transitions. [2019-09-08 07:46:15,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:15,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:15,590 INFO L225 Difference]: With dead ends: 9627 [2019-09-08 07:46:15,591 INFO L226 Difference]: Without dead ends: 5137 [2019-09-08 07:46:15,602 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 07:46:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2019-09-08 07:46:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 4917. [2019-09-08 07:46:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4917 states. [2019-09-08 07:46:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 7143 transitions. [2019-09-08 07:46:15,812 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 7143 transitions. Word has length 111 [2019-09-08 07:46:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:15,812 INFO L475 AbstractCegarLoop]: Abstraction has 4917 states and 7143 transitions. [2019-09-08 07:46:15,813 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 7143 transitions. [2019-09-08 07:46:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:15,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:15,815 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:15,816 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash 308453418, now seen corresponding path program 1 times [2019-09-08 07:46:15,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:15,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:15,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:15,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:15,947 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 07:46:15,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:15,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:15,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:15,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:15,949 INFO L87 Difference]: Start difference. First operand 4917 states and 7143 transitions. Second operand 9 states. [2019-09-08 07:46:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:17,095 INFO L93 Difference]: Finished difference Result 12321 states and 18003 transitions. [2019-09-08 07:46:17,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:17,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:17,130 INFO L225 Difference]: With dead ends: 12321 [2019-09-08 07:46:17,130 INFO L226 Difference]: Without dead ends: 7522 [2019-09-08 07:46:17,145 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 07:46:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2019-09-08 07:46:17,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 5559. [2019-09-08 07:46:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2019-09-08 07:46:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 8127 transitions. [2019-09-08 07:46:17,436 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 8127 transitions. Word has length 111 [2019-09-08 07:46:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:17,436 INFO L475 AbstractCegarLoop]: Abstraction has 5559 states and 8127 transitions. [2019-09-08 07:46:17,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 8127 transitions. [2019-09-08 07:46:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:17,439 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:17,439 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:17,439 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:17,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1893422644, now seen corresponding path program 1 times [2019-09-08 07:46:17,440 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:17,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:17,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:17,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:17,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:17,547 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 07:46:17,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:17,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:17,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:17,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:17,549 INFO L87 Difference]: Start difference. First operand 5559 states and 8127 transitions. Second operand 9 states. [2019-09-08 07:46:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:18,817 INFO L93 Difference]: Finished difference Result 11596 states and 17089 transitions. [2019-09-08 07:46:18,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:18,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-08 07:46:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:18,856 INFO L225 Difference]: With dead ends: 11596 [2019-09-08 07:46:18,856 INFO L226 Difference]: Without dead ends: 7583 [2019-09-08 07:46:18,865 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 07:46:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2019-09-08 07:46:19,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 5186. [2019-09-08 07:46:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2019-09-08 07:46:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7579 transitions. [2019-09-08 07:46:19,122 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 7579 transitions. Word has length 111 [2019-09-08 07:46:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:19,122 INFO L475 AbstractCegarLoop]: Abstraction has 5186 states and 7579 transitions. [2019-09-08 07:46:19,122 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:19,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 7579 transitions. [2019-09-08 07:46:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-08 07:46:19,130 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:19,130 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:19,130 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1557071076, now seen corresponding path program 1 times [2019-09-08 07:46:19,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:19,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:19,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:19,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:19,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-09-08 07:46:19,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:19,270 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:19,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:19,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:19,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-09-08 07:46:19,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:19,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:19,614 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:19,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:19,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:19,615 INFO L87 Difference]: Start difference. First operand 5186 states and 7579 transitions. Second operand 8 states. [2019-09-08 07:46:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:21,069 INFO L93 Difference]: Finished difference Result 10789 states and 15757 transitions. [2019-09-08 07:46:21,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:21,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2019-09-08 07:46:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:21,102 INFO L225 Difference]: With dead ends: 10789 [2019-09-08 07:46:21,103 INFO L226 Difference]: Without dead ends: 7404 [2019-09-08 07:46:21,114 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 169 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 07:46:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7404 states. [2019-09-08 07:46:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7404 to 6852. [2019-09-08 07:46:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6852 states. [2019-09-08 07:46:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 9885 transitions. [2019-09-08 07:46:21,624 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 9885 transitions. Word has length 168 [2019-09-08 07:46:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:21,625 INFO L475 AbstractCegarLoop]: Abstraction has 6852 states and 9885 transitions. [2019-09-08 07:46:21,625 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 9885 transitions. [2019-09-08 07:46:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-08 07:46:21,632 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:21,633 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:21,633 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 17895358, now seen corresponding path program 1 times [2019-09-08 07:46:21,634 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:21,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:21,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:21,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:21,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-08 07:46:21,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:21,807 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:21,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:22,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:46:22,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:22,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:46:22,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:46:22,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:46:22,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:46:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:46:22,335 INFO L87 Difference]: Start difference. First operand 6852 states and 9885 transitions. Second operand 13 states. [2019-09-08 07:46:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:26,139 INFO L93 Difference]: Finished difference Result 38699 states and 56435 transitions. [2019-09-08 07:46:26,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:46:26,140 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 170 [2019-09-08 07:46:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:26,268 INFO L225 Difference]: With dead ends: 38699 [2019-09-08 07:46:26,268 INFO L226 Difference]: Without dead ends: 31998 [2019-09-08 07:46:26,298 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:46:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31998 states. [2019-09-08 07:46:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31998 to 22584. [2019-09-08 07:46:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22584 states. [2019-09-08 07:46:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22584 states to 22584 states and 32204 transitions. [2019-09-08 07:46:27,846 INFO L78 Accepts]: Start accepts. Automaton has 22584 states and 32204 transitions. Word has length 170 [2019-09-08 07:46:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:27,846 INFO L475 AbstractCegarLoop]: Abstraction has 22584 states and 32204 transitions. [2019-09-08 07:46:27,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:46:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22584 states and 32204 transitions. [2019-09-08 07:46:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-09-08 07:46:27,856 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:27,856 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:27,857 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1424558670, now seen corresponding path program 1 times [2019-09-08 07:46:27,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:27,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:27,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:27,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:27,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-08 07:46:27,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:27,969 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:27,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:28,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:46:28,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:29,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:46:29,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:46:29,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:46:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:46:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:46:29,061 INFO L87 Difference]: Start difference. First operand 22584 states and 32204 transitions. Second operand 13 states. [2019-09-08 07:46:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:34,349 INFO L93 Difference]: Finished difference Result 116307 states and 167555 transitions. [2019-09-08 07:46:34,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:46:34,349 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 171 [2019-09-08 07:46:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:34,759 INFO L225 Difference]: With dead ends: 116307 [2019-09-08 07:46:34,760 INFO L226 Difference]: Without dead ends: 94015 [2019-09-08 07:46:34,854 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:46:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94015 states. [2019-09-08 07:46:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94015 to 73000. [2019-09-08 07:46:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73000 states. [2019-09-08 07:46:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73000 states to 73000 states and 102821 transitions. [2019-09-08 07:46:40,997 INFO L78 Accepts]: Start accepts. Automaton has 73000 states and 102821 transitions. Word has length 171 [2019-09-08 07:46:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:40,997 INFO L475 AbstractCegarLoop]: Abstraction has 73000 states and 102821 transitions. [2019-09-08 07:46:40,997 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:46:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 73000 states and 102821 transitions. [2019-09-08 07:46:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-08 07:46:41,019 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:41,020 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:41,020 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1843635704, now seen corresponding path program 1 times [2019-09-08 07:46:41,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:41,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:41,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:41,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:41,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-08 07:46:41,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:41,127 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:41,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:41,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:46:41,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:41,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:46:41,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:46:41,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:46:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:46:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:46:41,471 INFO L87 Difference]: Start difference. First operand 73000 states and 102821 transitions. Second operand 13 states. [2019-09-08 07:46:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:55,604 INFO L93 Difference]: Finished difference Result 344437 states and 488726 transitions. [2019-09-08 07:46:55,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:46:55,604 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 172 [2019-09-08 07:46:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:56,537 INFO L225 Difference]: With dead ends: 344437 [2019-09-08 07:46:56,537 INFO L226 Difference]: Without dead ends: 272050 [2019-09-08 07:46:56,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:46:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272050 states. [2019-09-08 07:47:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272050 to 234774. [2019-09-08 07:47:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234774 states. [2019-09-08 07:47:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234774 states to 234774 states and 327172 transitions. [2019-09-08 07:47:14,413 INFO L78 Accepts]: Start accepts. Automaton has 234774 states and 327172 transitions. Word has length 172 [2019-09-08 07:47:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:14,414 INFO L475 AbstractCegarLoop]: Abstraction has 234774 states and 327172 transitions. [2019-09-08 07:47:14,414 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:47:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 234774 states and 327172 transitions. [2019-09-08 07:47:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-08 07:47:14,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:14,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:14,461 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:14,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:14,461 INFO L82 PathProgramCache]: Analyzing trace with hash -527683337, now seen corresponding path program 1 times [2019-09-08 07:47:14,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:14,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:14,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:14,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:14,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 07:47:14,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:14,575 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 07:47:14,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:14,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:47:14,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:14,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:47:14,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:47:14,915 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:47:14,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:47:14,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:47:14,916 INFO L87 Difference]: Start difference. First operand 234774 states and 327172 transitions. Second operand 13 states. [2019-09-08 07:48:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:03,181 INFO L93 Difference]: Finished difference Result 1019427 states and 1424293 transitions. [2019-09-08 07:48:03,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:48:03,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2019-09-08 07:48:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:05,418 INFO L225 Difference]: With dead ends: 1019427 [2019-09-08 07:48:05,418 INFO L226 Difference]: Without dead ends: 785923 [2019-09-08 07:48:05,890 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:48:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785923 states. [2019-09-08 07:49:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785923 to 751420. [2019-09-08 07:49:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751420 states. [2019-09-08 07:49:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751420 states to 751420 states and 1037579 transitions. [2019-09-08 07:49:11,843 INFO L78 Accepts]: Start accepts. Automaton has 751420 states and 1037579 transitions. Word has length 173 [2019-09-08 07:49:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:11,844 INFO L475 AbstractCegarLoop]: Abstraction has 751420 states and 1037579 transitions. [2019-09-08 07:49:11,844 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:49:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 751420 states and 1037579 transitions. [2019-09-08 07:49:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-08 07:49:11,982 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:11,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:11,983 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1009852736, now seen corresponding path program 1 times [2019-09-08 07:49:11,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:11,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:11,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:11,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:11,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-08 07:49:12,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:12,075 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 07:49:12,091 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 07:49:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:12,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:49:12,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:12,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:49:12,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:49:12,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:49:12,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:49:12,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:49:12,307 INFO L87 Difference]: Start difference. First operand 751420 states and 1037579 transitions. Second operand 4 states. [2019-09-08 07:50:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:38,509 INFO L93 Difference]: Finished difference Result 1882250 states and 2606368 transitions. [2019-09-08 07:50:38,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:50:38,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-09-08 07:50:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:41,671 INFO L225 Difference]: With dead ends: 1882250 [2019-09-08 07:50:41,672 INFO L226 Difference]: Without dead ends: 1133153 [2019-09-08 07:50:56,934 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 07:50:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133153 states.