java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:35:50,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:35:50,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:35:50,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:35:50,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:35:50,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:35:50,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:35:50,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:35:50,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:35:50,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:35:50,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:35:50,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:35:50,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:35:50,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:35:50,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:35:50,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:35:50,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:35:50,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:35:50,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:35:50,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:35:50,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:35:50,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:35:50,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:35:50,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:35:50,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:35:50,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:35:50,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:35:50,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:35:50,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:35:50,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:35:50,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:35:50,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:35:50,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:35:50,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:35:50,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:35:50,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:35:50,353 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 07:35:50,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:35:50,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:35:50,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:35:50,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:35:50,369 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:35:50,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:35:50,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:35:50,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:35:50,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:35:50,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:35:50,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:35:50,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:35:50,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:35:50,371 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:35:50,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:35:50,372 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:35:50,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:35:50,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:35:50,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:35:50,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:35:50,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:35:50,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:35:50,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:35:50,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:35:50,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:35:50,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:35:50,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:35:50,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:35:50,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:35:50,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:35:50,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:35:50,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:35:50,419 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:35:50,420 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:35:50,420 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2019-09-08 07:35:50,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4952612f/f29b9aa814d14eb78af7950e92d07967/FLAG8e7c62b8f [2019-09-08 07:35:51,040 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:35:51,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2019-09-08 07:35:51,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4952612f/f29b9aa814d14eb78af7950e92d07967/FLAG8e7c62b8f [2019-09-08 07:35:51,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4952612f/f29b9aa814d14eb78af7950e92d07967 [2019-09-08 07:35:51,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:35:51,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:35:51,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:35:51,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:35:51,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:35:51,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f04eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51, skipping insertion in model container [2019-09-08 07:35:51,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,336 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:35:51,383 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:35:51,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:35:51,715 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:35:51,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:35:51,797 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:35:51,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51 WrapperNode [2019-09-08 07:35:51,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:35:51,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:35:51,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:35:51,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:35:51,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (1/1) ... [2019-09-08 07:35:51,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:35:51,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:35:51,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:35:51,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:35:51,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (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 07:35:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:35:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:35:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:35:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:35:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:35:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:35:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:35:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:35:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:35:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:35:51,914 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:35:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:35:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:35:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:35:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:35:51,915 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:35:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:35:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:35:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:35:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:35:51,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:35:52,592 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:35:52,593 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:35:52,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:35:52 BoogieIcfgContainer [2019-09-08 07:35:52,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:35:52,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:35:52,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:35:52,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:35:52,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:35:51" (1/3) ... [2019-09-08 07:35:52,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b9f2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:35:52, skipping insertion in model container [2019-09-08 07:35:52,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:35:51" (2/3) ... [2019-09-08 07:35:52,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b9f2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:35:52, skipping insertion in model container [2019-09-08 07:35:52,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:35:52" (3/3) ... [2019-09-08 07:35:52,605 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2019-09-08 07:35:52,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:35:52,625 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:35:52,643 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:35:52,682 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:35:52,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:35:52,682 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:35:52,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:35:52,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:35:52,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:35:52,684 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:35:52,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:35:52,684 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:35:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-09-08 07:35:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 07:35:52,725 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:52,726 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:52,729 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1186279797, now seen corresponding path program 1 times [2019-09-08 07:35:52,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:52,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:52,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:52,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:52,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:53,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:53,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:35:53,123 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:35:53,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:35:53,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:35:53,143 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2019-09-08 07:35:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:53,274 INFO L93 Difference]: Finished difference Result 218 states and 321 transitions. [2019-09-08 07:35:53,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:35:53,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2019-09-08 07:35:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:53,291 INFO L225 Difference]: With dead ends: 218 [2019-09-08 07:35:53,291 INFO L226 Difference]: Without dead ends: 120 [2019-09-08 07:35:53,296 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 07:35:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-09-08 07:35:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-09-08 07:35:53,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-08 07:35:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2019-09-08 07:35:53,358 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 54 [2019-09-08 07:35:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:53,358 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2019-09-08 07:35:53,359 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:35:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2019-09-08 07:35:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-09-08 07:35:53,362 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:53,363 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:53,363 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1479116716, now seen corresponding path program 1 times [2019-09-08 07:35:53,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:53,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:53,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:53,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:53,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:53,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:53,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:35:53,810 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:35:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:35:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:35:53,812 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 11 states. [2019-09-08 07:35:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:57,264 INFO L93 Difference]: Finished difference Result 925 states and 1388 transitions. [2019-09-08 07:35:57,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 07:35:57,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2019-09-08 07:35:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:57,279 INFO L225 Difference]: With dead ends: 925 [2019-09-08 07:35:57,279 INFO L226 Difference]: Without dead ends: 841 [2019-09-08 07:35:57,282 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 07:35:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-09-08 07:35:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 463. [2019-09-08 07:35:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-08 07:35:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 659 transitions. [2019-09-08 07:35:57,411 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 659 transitions. Word has length 77 [2019-09-08 07:35:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:57,412 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 659 transitions. [2019-09-08 07:35:57,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:35:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 659 transitions. [2019-09-08 07:35:57,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-08 07:35:57,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:57,417 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:57,417 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:57,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1900808928, now seen corresponding path program 1 times [2019-09-08 07:35:57,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:57,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:57,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:57,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:57,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:57,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:57,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:35:57,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:35:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:35:57,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:35:57,578 INFO L87 Difference]: Start difference. First operand 463 states and 659 transitions. Second operand 8 states. [2019-09-08 07:35:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:57,672 INFO L93 Difference]: Finished difference Result 560 states and 804 transitions. [2019-09-08 07:35:57,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:35:57,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2019-09-08 07:35:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:57,678 INFO L225 Difference]: With dead ends: 560 [2019-09-08 07:35:57,679 INFO L226 Difference]: Without dead ends: 558 [2019-09-08 07:35:57,680 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 07:35:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2019-09-08 07:35:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 508. [2019-09-08 07:35:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-09-08 07:35:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 704 transitions. [2019-09-08 07:35:57,733 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 704 transitions. Word has length 78 [2019-09-08 07:35:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:57,734 INFO L475 AbstractCegarLoop]: Abstraction has 508 states and 704 transitions. [2019-09-08 07:35:57,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:35:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 704 transitions. [2019-09-08 07:35:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 07:35:57,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:57,738 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:57,738 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:57,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:57,739 INFO L82 PathProgramCache]: Analyzing trace with hash -626616316, now seen corresponding path program 1 times [2019-09-08 07:35:57,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:57,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:57,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:57,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:57,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:57,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:57,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:35:57,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:35:57,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:35:57,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:35:57,951 INFO L87 Difference]: Start difference. First operand 508 states and 704 transitions. Second operand 7 states. [2019-09-08 07:35:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:58,730 INFO L93 Difference]: Finished difference Result 2161 states and 3090 transitions. [2019-09-08 07:35:58,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:35:58,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-09-08 07:35:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:58,741 INFO L225 Difference]: With dead ends: 2161 [2019-09-08 07:35:58,741 INFO L226 Difference]: Without dead ends: 1689 [2019-09-08 07:35:58,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-08 07:35:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2019-09-08 07:35:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1683. [2019-09-08 07:35:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1683 states. [2019-09-08 07:35:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2384 transitions. [2019-09-08 07:35:58,829 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2384 transitions. Word has length 79 [2019-09-08 07:35:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:58,830 INFO L475 AbstractCegarLoop]: Abstraction has 1683 states and 2384 transitions. [2019-09-08 07:35:58,830 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:35:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2384 transitions. [2019-09-08 07:35:58,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:35:58,834 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:58,834 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:58,835 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:58,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1831228908, now seen corresponding path program 1 times [2019-09-08 07:35:58,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:58,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:58,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:58,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:58,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:58,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:58,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:35:58,973 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:35:58,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:35:58,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:35:58,974 INFO L87 Difference]: Start difference. First operand 1683 states and 2384 transitions. Second operand 9 states. [2019-09-08 07:35:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:35:59,724 INFO L93 Difference]: Finished difference Result 3600 states and 5171 transitions. [2019-09-08 07:35:59,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:35:59,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:35:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:35:59,737 INFO L225 Difference]: With dead ends: 3600 [2019-09-08 07:35:59,738 INFO L226 Difference]: Without dead ends: 2327 [2019-09-08 07:35:59,742 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:35:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2019-09-08 07:35:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1864. [2019-09-08 07:35:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2019-09-08 07:35:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2652 transitions. [2019-09-08 07:35:59,850 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2652 transitions. Word has length 80 [2019-09-08 07:35:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:35:59,850 INFO L475 AbstractCegarLoop]: Abstraction has 1864 states and 2652 transitions. [2019-09-08 07:35:59,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:35:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2652 transitions. [2019-09-08 07:35:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:35:59,853 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:35:59,853 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:35:59,853 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:35:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:35:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash 303660592, now seen corresponding path program 1 times [2019-09-08 07:35:59,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:35:59,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:35:59,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:59,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:35:59,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:35:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:35:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:35:59,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:35:59,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:35:59,970 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:35:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:35:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:35:59,971 INFO L87 Difference]: Start difference. First operand 1864 states and 2652 transitions. Second operand 9 states. [2019-09-08 07:36:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:00,721 INFO L93 Difference]: Finished difference Result 4192 states and 5962 transitions. [2019-09-08 07:36:00,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:00,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:00,735 INFO L225 Difference]: With dead ends: 4192 [2019-09-08 07:36:00,735 INFO L226 Difference]: Without dead ends: 2402 [2019-09-08 07:36:00,740 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 07:36:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2019-09-08 07:36:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1932. [2019-09-08 07:36:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2019-09-08 07:36:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2746 transitions. [2019-09-08 07:36:00,856 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2746 transitions. Word has length 80 [2019-09-08 07:36:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:00,856 INFO L475 AbstractCegarLoop]: Abstraction has 1932 states and 2746 transitions. [2019-09-08 07:36:00,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2746 transitions. [2019-09-08 07:36:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:00,858 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:00,859 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:00,859 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:00,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1787377174, now seen corresponding path program 1 times [2019-09-08 07:36:00,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:00,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:00,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:00,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:00,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:00,962 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 07:36:00,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:00,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:00,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:00,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:00,964 INFO L87 Difference]: Start difference. First operand 1932 states and 2746 transitions. Second operand 9 states. [2019-09-08 07:36:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:01,677 INFO L93 Difference]: Finished difference Result 3891 states and 5489 transitions. [2019-09-08 07:36:01,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:01,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:01,688 INFO L225 Difference]: With dead ends: 3891 [2019-09-08 07:36:01,688 INFO L226 Difference]: Without dead ends: 2107 [2019-09-08 07:36:01,693 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 07:36:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2019-09-08 07:36:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1980. [2019-09-08 07:36:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2019-09-08 07:36:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2813 transitions. [2019-09-08 07:36:01,787 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2813 transitions. Word has length 80 [2019-09-08 07:36:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:01,787 INFO L475 AbstractCegarLoop]: Abstraction has 1980 states and 2813 transitions. [2019-09-08 07:36:01,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2813 transitions. [2019-09-08 07:36:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-08 07:36:01,789 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:01,789 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:01,790 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:01,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2048395556, now seen corresponding path program 1 times [2019-09-08 07:36:01,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:01,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:01,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:01,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:01,883 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 07:36:01,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:36:01,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:36:01,884 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:36:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:36:01,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:36:01,885 INFO L87 Difference]: Start difference. First operand 1980 states and 2813 transitions. Second operand 9 states. [2019-09-08 07:36:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:02,610 INFO L93 Difference]: Finished difference Result 4695 states and 6689 transitions. [2019-09-08 07:36:02,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:36:02,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2019-09-08 07:36:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:02,626 INFO L225 Difference]: With dead ends: 4695 [2019-09-08 07:36:02,626 INFO L226 Difference]: Without dead ends: 2796 [2019-09-08 07:36:02,632 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 07:36:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2019-09-08 07:36:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2008. [2019-09-08 07:36:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2019-09-08 07:36:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2858 transitions. [2019-09-08 07:36:02,736 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2858 transitions. Word has length 80 [2019-09-08 07:36:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:02,736 INFO L475 AbstractCegarLoop]: Abstraction has 2008 states and 2858 transitions. [2019-09-08 07:36:02,736 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:36:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2858 transitions. [2019-09-08 07:36:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 07:36:02,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:02,743 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:02,743 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2024285715, now seen corresponding path program 1 times [2019-09-08 07:36:02,744 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:02,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:02,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:02,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:02,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 07:36:02,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:02,935 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:36:02,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:03,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:36:03,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-08 07:36:03,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:03,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:36:03,272 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:36:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:36:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:36:03,273 INFO L87 Difference]: Start difference. First operand 2008 states and 2858 transitions. Second operand 8 states. [2019-09-08 07:36:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:03,858 INFO L93 Difference]: Finished difference Result 4340 states and 6200 transitions. [2019-09-08 07:36:03,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:36:03,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2019-09-08 07:36:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:03,873 INFO L225 Difference]: With dead ends: 4340 [2019-09-08 07:36:03,873 INFO L226 Difference]: Without dead ends: 2803 [2019-09-08 07:36:03,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:36:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2019-09-08 07:36:04,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2539. [2019-09-08 07:36:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2539 states. [2019-09-08 07:36:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 3559 transitions. [2019-09-08 07:36:04,059 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 3559 transitions. Word has length 123 [2019-09-08 07:36:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:04,060 INFO L475 AbstractCegarLoop]: Abstraction has 2539 states and 3559 transitions. [2019-09-08 07:36:04,060 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:36:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 3559 transitions. [2019-09-08 07:36:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-08 07:36:04,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:04,068 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:04,069 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash -61607363, now seen corresponding path program 1 times [2019-09-08 07:36:04,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:04,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:04,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:04,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-08 07:36:04,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:04,212 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:04,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:04,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:36:04,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:04,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:04,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:36:04,484 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:36:04,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:36:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:04,485 INFO L87 Difference]: Start difference. First operand 2539 states and 3559 transitions. Second operand 4 states. [2019-09-08 07:36:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:04,769 INFO L93 Difference]: Finished difference Result 6998 states and 9920 transitions. [2019-09-08 07:36:04,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:36:04,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-09-08 07:36:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:04,799 INFO L225 Difference]: With dead ends: 6998 [2019-09-08 07:36:04,799 INFO L226 Difference]: Without dead ends: 4556 [2019-09-08 07:36:04,810 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2019-09-08 07:36:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4554. [2019-09-08 07:36:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2019-09-08 07:36:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6324 transitions. [2019-09-08 07:36:05,082 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6324 transitions. Word has length 124 [2019-09-08 07:36:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:05,083 INFO L475 AbstractCegarLoop]: Abstraction has 4554 states and 6324 transitions. [2019-09-08 07:36:05,083 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:36:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6324 transitions. [2019-09-08 07:36:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-08 07:36:05,086 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:05,087 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:05,087 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1589175679, now seen corresponding path program 1 times [2019-09-08 07:36:05,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:05,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:05,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:05,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:05,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 07:36:05,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:05,179 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:36:05,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:05,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:36:05,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Stream closed [2019-09-08 07:36:05,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:36:05,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:36:05,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:36:05,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:36:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:36:05,519 INFO L87 Difference]: Start difference. First operand 4554 states and 6324 transitions. Second operand 13 states. [2019-09-08 07:36:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:08,938 INFO L93 Difference]: Finished difference Result 23534 states and 33073 transitions. [2019-09-08 07:36:08,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:36:08,938 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2019-09-08 07:36:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:09,043 INFO L225 Difference]: With dead ends: 23534 [2019-09-08 07:36:09,043 INFO L226 Difference]: Without dead ends: 19131 [2019-09-08 07:36:09,064 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=498, Invalid=1394, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:36:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19131 states. [2019-09-08 07:36:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19131 to 15625. [2019-09-08 07:36:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15625 states. [2019-09-08 07:36:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15625 states to 15625 states and 21432 transitions. [2019-09-08 07:36:10,143 INFO L78 Accepts]: Start accepts. Automaton has 15625 states and 21432 transitions. Word has length 124 [2019-09-08 07:36:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:10,144 INFO L475 AbstractCegarLoop]: Abstraction has 15625 states and 21432 transitions. [2019-09-08 07:36:10,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:36:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 15625 states and 21432 transitions. [2019-09-08 07:36:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-08 07:36:10,157 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:10,157 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:10,158 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1801919013, now seen corresponding path program 1 times [2019-09-08 07:36:10,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:10,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:10,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:10,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:10,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:36:10,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:10,280 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:10,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:10,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:36:10,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:36:10,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:36:10,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2019-09-08 07:36:10,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:36:10,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:36:10,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:36:10,639 INFO L87 Difference]: Start difference. First operand 15625 states and 21432 transitions. Second operand 13 states. [2019-09-08 07:36:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:15,681 INFO L93 Difference]: Finished difference Result 70657 states and 97434 transitions. [2019-09-08 07:36:15,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:36:15,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2019-09-08 07:36:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:15,902 INFO L225 Difference]: With dead ends: 70657 [2019-09-08 07:36:15,902 INFO L226 Difference]: Without dead ends: 55329 [2019-09-08 07:36:15,963 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 135 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 07:36:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55329 states. [2019-09-08 07:36:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55329 to 51754. [2019-09-08 07:36:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51754 states. [2019-09-08 07:36:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 70102 transitions. [2019-09-08 07:36:19,382 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 70102 transitions. Word has length 125 [2019-09-08 07:36:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:19,383 INFO L475 AbstractCegarLoop]: Abstraction has 51754 states and 70102 transitions. [2019-09-08 07:36:19,383 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:36:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 70102 transitions. [2019-09-08 07:36:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-08 07:36:19,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:19,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:19,411 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -330939439, now seen corresponding path program 1 times [2019-09-08 07:36:19,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:19,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:19,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:19,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:19,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 07:36:19,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:19,489 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 07:36:19,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:19,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:36:19,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:19,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:19,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:36:19,672 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:36:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:36:19,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:19,673 INFO L87 Difference]: Start difference. First operand 51754 states and 70102 transitions. Second operand 4 states. [2019-09-08 07:36:23,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:23,212 INFO L93 Difference]: Finished difference Result 121906 states and 165765 transitions. [2019-09-08 07:36:23,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:36:23,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-09-08 07:36:23,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:23,466 INFO L225 Difference]: With dead ends: 121906 [2019-09-08 07:36:23,466 INFO L226 Difference]: Without dead ends: 70683 [2019-09-08 07:36:23,599 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70683 states. [2019-09-08 07:36:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70683 to 70189. [2019-09-08 07:36:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70189 states. [2019-09-08 07:36:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70189 states to 70189 states and 93404 transitions. [2019-09-08 07:36:28,714 INFO L78 Accepts]: Start accepts. Automaton has 70189 states and 93404 transitions. Word has length 126 [2019-09-08 07:36:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:28,715 INFO L475 AbstractCegarLoop]: Abstraction has 70189 states and 93404 transitions. [2019-09-08 07:36:28,715 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:36:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 70189 states and 93404 transitions. [2019-09-08 07:36:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-08 07:36:28,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:28,750 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:28,751 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash 726311718, now seen corresponding path program 1 times [2019-09-08 07:36:28,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:28,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:28,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:28,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:28,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 07:36:28,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:28,844 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 07:36:28,861 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 07:36:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:28,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:36:28,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 07:36:29,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:29,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2019-09-08 07:36:29,122 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 07:36:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 07:36:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:36:29,123 INFO L87 Difference]: Start difference. First operand 70189 states and 93404 transitions. Second operand 12 states. [2019-09-08 07:36:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:36,561 INFO L93 Difference]: Finished difference Result 193192 states and 259928 transitions. [2019-09-08 07:36:36,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-08 07:36:36,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 127 [2019-09-08 07:36:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:36,963 INFO L225 Difference]: With dead ends: 193192 [2019-09-08 07:36:36,963 INFO L226 Difference]: Without dead ends: 124239 [2019-09-08 07:36:37,080 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:36:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124239 states. [2019-09-08 07:36:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124239 to 115327. [2019-09-08 07:36:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115327 states. [2019-09-08 07:36:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115327 states to 115327 states and 150237 transitions. [2019-09-08 07:36:45,697 INFO L78 Accepts]: Start accepts. Automaton has 115327 states and 150237 transitions. Word has length 127 [2019-09-08 07:36:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:36:45,697 INFO L475 AbstractCegarLoop]: Abstraction has 115327 states and 150237 transitions. [2019-09-08 07:36:45,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 07:36:45,698 INFO L276 IsEmpty]: Start isEmpty. Operand 115327 states and 150237 transitions. [2019-09-08 07:36:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-08 07:36:45,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:36:45,753 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:36:45,754 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:36:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:36:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash -723201790, now seen corresponding path program 1 times [2019-09-08 07:36:45,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:36:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:36:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:45,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:36:45,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:36:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:36:45,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:36:45,829 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:36:45,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:36:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:36:45,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:36:45,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:36:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:36:46,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:36:46,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:36:46,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:36:46,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:36:46,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:46,014 INFO L87 Difference]: Start difference. First operand 115327 states and 150237 transitions. Second operand 4 states. [2019-09-08 07:36:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:36:54,411 INFO L93 Difference]: Finished difference Result 260902 states and 344204 transitions. [2019-09-08 07:36:54,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:36:54,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-09-08 07:36:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:36:54,846 INFO L225 Difference]: With dead ends: 260902 [2019-09-08 07:36:54,846 INFO L226 Difference]: Without dead ends: 147132 [2019-09-08 07:36:55,026 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:36:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147132 states. [2019-09-08 07:37:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147132 to 136931. [2019-09-08 07:37:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136931 states. [2019-09-08 07:37:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136931 states to 136931 states and 172436 transitions. [2019-09-08 07:37:05,608 INFO L78 Accepts]: Start accepts. Automaton has 136931 states and 172436 transitions. Word has length 128 [2019-09-08 07:37:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:05,609 INFO L475 AbstractCegarLoop]: Abstraction has 136931 states and 172436 transitions. [2019-09-08 07:37:05,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:37:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 136931 states and 172436 transitions. [2019-09-08 07:37:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-08 07:37:05,658 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:05,658 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:05,658 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:05,659 INFO L82 PathProgramCache]: Analyzing trace with hash -622498346, now seen corresponding path program 1 times [2019-09-08 07:37:05,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:05,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:05,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:05,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:05,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:37:05,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:05,800 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:37:05,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:05,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:05,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:37:06,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:06,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2019-09-08 07:37:06,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 07:37:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 07:37:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-09-08 07:37:06,195 INFO L87 Difference]: Start difference. First operand 136931 states and 172436 transitions. Second operand 18 states. [2019-09-08 07:37:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:13,383 INFO L93 Difference]: Finished difference Result 199021 states and 250409 transitions. [2019-09-08 07:37:13,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-08 07:37:13,384 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 128 [2019-09-08 07:37:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:13,686 INFO L225 Difference]: With dead ends: 199021 [2019-09-08 07:37:13,686 INFO L226 Difference]: Without dead ends: 145001 [2019-09-08 07:37:13,765 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 07:37:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145001 states. [2019-09-08 07:37:23,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145001 to 135971. [2019-09-08 07:37:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135971 states. [2019-09-08 07:37:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135971 states to 135971 states and 170391 transitions. [2019-09-08 07:37:23,862 INFO L78 Accepts]: Start accepts. Automaton has 135971 states and 170391 transitions. Word has length 128 [2019-09-08 07:37:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:23,863 INFO L475 AbstractCegarLoop]: Abstraction has 135971 states and 170391 transitions. [2019-09-08 07:37:23,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 07:37:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 135971 states and 170391 transitions. [2019-09-08 07:37:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:37:23,904 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:23,904 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:23,904 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash -693674036, now seen corresponding path program 1 times [2019-09-08 07:37:23,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:23,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:23,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:23,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:23,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:37:24,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:24,025 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:37:24,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:24,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 07:37:24,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:37:24,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:37:24,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2019-09-08 07:37:24,657 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 07:37:24,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 07:37:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-09-08 07:37:24,658 INFO L87 Difference]: Start difference. First operand 135971 states and 170391 transitions. Second operand 18 states. [2019-09-08 07:37:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:37:33,591 INFO L93 Difference]: Finished difference Result 276569 states and 347153 transitions. [2019-09-08 07:37:33,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 07:37:33,592 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2019-09-08 07:37:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:37:34,032 INFO L225 Difference]: With dead ends: 276569 [2019-09-08 07:37:34,032 INFO L226 Difference]: Without dead ends: 201146 [2019-09-08 07:37:34,126 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2019-09-08 07:37:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201146 states. [2019-09-08 07:37:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201146 to 197131. [2019-09-08 07:37:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197131 states. [2019-09-08 07:37:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197131 states to 197131 states and 246133 transitions. [2019-09-08 07:37:47,396 INFO L78 Accepts]: Start accepts. Automaton has 197131 states and 246133 transitions. Word has length 129 [2019-09-08 07:37:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:37:47,397 INFO L475 AbstractCegarLoop]: Abstraction has 197131 states and 246133 transitions. [2019-09-08 07:37:47,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 07:37:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 197131 states and 246133 transitions. [2019-09-08 07:37:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 07:37:47,457 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:37:47,457 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:37:47,457 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:37:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:37:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1447978065, now seen corresponding path program 1 times [2019-09-08 07:37:47,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:37:47,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:37:47,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:47,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:37:47,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:37:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-08 07:37:47,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:37:47,672 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:37:47,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:37:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:37:47,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:37:47,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:37:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:37:48,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:37:48,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2019-09-08 07:37:48,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:37:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:37:48,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:37:48,024 INFO L87 Difference]: Start difference. First operand 197131 states and 246133 transitions. Second operand 22 states. [2019-09-08 07:38:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:38:16,739 INFO L93 Difference]: Finished difference Result 358815 states and 471878 transitions. [2019-09-08 07:38:16,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-08 07:38:16,739 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2019-09-08 07:38:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:38:17,776 INFO L225 Difference]: With dead ends: 358815 [2019-09-08 07:38:17,776 INFO L226 Difference]: Without dead ends: 308754 [2019-09-08 07:38:17,903 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=993, Invalid=4263, Unknown=0, NotChecked=0, Total=5256 [2019-09-08 07:38:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308754 states. [2019-09-08 07:38:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308754 to 282694. [2019-09-08 07:38:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282694 states. [2019-09-08 07:38:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282694 states to 282694 states and 355077 transitions. [2019-09-08 07:38:43,604 INFO L78 Accepts]: Start accepts. Automaton has 282694 states and 355077 transitions. Word has length 129 [2019-09-08 07:38:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:38:43,605 INFO L475 AbstractCegarLoop]: Abstraction has 282694 states and 355077 transitions. [2019-09-08 07:38:43,605 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 07:38:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 282694 states and 355077 transitions. [2019-09-08 07:38:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:38:43,650 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:38:43,650 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:38:43,650 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:38:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:38:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1535994395, now seen corresponding path program 1 times [2019-09-08 07:38:43,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:38:43,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:38:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:43,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:38:43,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:38:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 07:38:43,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:38:43,851 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:38:43,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:38:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:38:43,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:38:43,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:38:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (12)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:38:44,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:38:44,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2019-09-08 07:38:44,232 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 07:38:44,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 07:38:44,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2019-09-08 07:38:44,233 INFO L87 Difference]: Start difference. First operand 282694 states and 355077 transitions. Second operand 23 states. [2019-09-08 07:39:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:39:12,056 INFO L93 Difference]: Finished difference Result 436557 states and 564112 transitions. [2019-09-08 07:39:12,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 07:39:12,057 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 130 [2019-09-08 07:39:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:39:13,413 INFO L225 Difference]: With dead ends: 436557 [2019-09-08 07:39:13,414 INFO L226 Difference]: Without dead ends: 386695 [2019-09-08 07:39:13,634 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=703, Invalid=3203, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 07:39:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386695 states. [2019-09-08 07:39:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386695 to 364600. [2019-09-08 07:39:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364600 states. [2019-09-08 07:39:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364600 states to 364600 states and 457604 transitions. [2019-09-08 07:39:48,356 INFO L78 Accepts]: Start accepts. Automaton has 364600 states and 457604 transitions. Word has length 130 [2019-09-08 07:39:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:39:48,357 INFO L475 AbstractCegarLoop]: Abstraction has 364600 states and 457604 transitions. [2019-09-08 07:39:48,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 07:39:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 364600 states and 457604 transitions. [2019-09-08 07:39:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-08 07:39:48,402 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:39:48,402 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:39:48,402 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:39:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:39:48,403 INFO L82 PathProgramCache]: Analyzing trace with hash 106752571, now seen corresponding path program 1 times [2019-09-08 07:39:48,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:39:48,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:39:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:39:48,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:39:48,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:39:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:39:48,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:39:48,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:39:48,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:39:48,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:39:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:39:48,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 07:39:48,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:39:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:39:48,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:39:48,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2019-09-08 07:39:48,951 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 07:39:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 07:39:48,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2019-09-08 07:39:48,952 INFO L87 Difference]: Start difference. First operand 364600 states and 457604 transitions. Second operand 22 states. [2019-09-08 07:40:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:24,914 INFO L93 Difference]: Finished difference Result 483620 states and 623042 transitions. [2019-09-08 07:40:24,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-08 07:40:24,915 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2019-09-08 07:40:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:25,994 INFO L225 Difference]: With dead ends: 483620 [2019-09-08 07:40:25,994 INFO L226 Difference]: Without dead ends: 423866 [2019-09-08 07:40:26,139 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=717, Invalid=3189, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 07:40:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423866 states. [2019-09-08 07:41:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423866 to 405655. [2019-09-08 07:41:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405655 states. [2019-09-08 07:41:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405655 states to 405655 states and 509479 transitions. [2019-09-08 07:41:02,330 INFO L78 Accepts]: Start accepts. Automaton has 405655 states and 509479 transitions. Word has length 130 [2019-09-08 07:41:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:41:02,331 INFO L475 AbstractCegarLoop]: Abstraction has 405655 states and 509479 transitions. [2019-09-08 07:41:02,331 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 07:41:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 405655 states and 509479 transitions. [2019-09-08 07:41:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-08 07:41:02,380 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:41:02,381 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:41:02,381 INFO L418 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:41:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:41:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1472526717, now seen corresponding path program 1 times [2019-09-08 07:41:02,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:41:02,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:41:02,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:02,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:02,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:41:02,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:41:02,450 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:41:02,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:02,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 07:41:02,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:41:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:41:02,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:41:02,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 07:41:02,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 07:41:02,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 07:41:02,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 07:41:02,617 INFO L87 Difference]: Start difference. First operand 405655 states and 509479 transitions. Second operand 4 states. [2019-09-08 07:41:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:41:35,256 INFO L93 Difference]: Finished difference Result 875908 states and 1114112 transitions. [2019-09-08 07:41:35,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 07:41:35,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-09-08 07:41:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:41:36,371 INFO L225 Difference]: With dead ends: 875908 [2019-09-08 07:41:36,371 INFO L226 Difference]: Without dead ends: 465701 [2019-09-08 07:41:36,805 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 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 07:41:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465701 states. [2019-09-08 07:42:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465701 to 445022. [2019-09-08 07:42:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445022 states. [2019-09-08 07:42:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445022 states to 445022 states and 540092 transitions. [2019-09-08 07:42:15,621 INFO L78 Accepts]: Start accepts. Automaton has 445022 states and 540092 transitions. Word has length 132 [2019-09-08 07:42:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:42:15,622 INFO L475 AbstractCegarLoop]: Abstraction has 445022 states and 540092 transitions. [2019-09-08 07:42:15,622 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 07:42:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 445022 states and 540092 transitions. [2019-09-08 07:42:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-08 07:42:15,709 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:42:15,709 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:42:15,709 INFO L418 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:42:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:42:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash -509299168, now seen corresponding path program 1 times [2019-09-08 07:42:15,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:42:15,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:42:15,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:42:15,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:42:15,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:42:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:42:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:42:16,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:42:16,060 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:42:16,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:42:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:42:16,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:42:16,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:42:16,526 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:42:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (15)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:42:18,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:42:18,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2019-09-08 07:42:18,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-08 07:42:18,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-08 07:42:18,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1164, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 07:42:18,095 INFO L87 Difference]: Start difference. First operand 445022 states and 540092 transitions. Second operand 36 states. [2019-09-08 07:42:20,885 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-08 07:42:21,670 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-08 07:42:24,209 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 07:42:25,715 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 07:42:33,204 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-08 07:42:34,203 WARN L188 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:42:34,825 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:42:35,166 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 07:42:37,273 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-08 07:42:37,861 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-08 07:42:43,889 WARN L188 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-08 07:42:47,189 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-08 07:42:49,456 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-08 07:42:50,559 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 07:42:52,053 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:42:52,575 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-08 07:42:54,489 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 07:42:54,649 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2019-09-08 07:42:54,819 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-08 07:42:56,669 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-08 07:42:57,019 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-08 07:42:57,291 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-08 07:42:57,905 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 07:42:58,943 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-08 07:42:59,096 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-08 07:42:59,322 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-08 07:42:59,491 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 07:43:00,054 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 07:43:00,923 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 07:43:01,690 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 07:43:01,973 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 07:43:02,205 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:43:02,396 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 07:43:02,553 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-08 07:43:02,915 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-08 07:43:03,385 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 07:43:03,675 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 07:43:05,563 WARN L188 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:43:05,758 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-08 07:43:05,933 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-08 07:43:06,752 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-08 07:43:07,193 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:43:07,658 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 07:43:07,877 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 07:43:08,526 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-08 07:43:08,979 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-08 07:43:09,241 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 07:43:09,458 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-08 07:43:11,225 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2019-09-08 07:43:11,562 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-08 07:43:12,454 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2019-09-08 07:43:18,302 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-09-08 07:43:27,711 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-09-08 07:43:38,826 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-08 07:43:43,056 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-08 07:43:43,218 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-08 07:43:44,597 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-08 07:46:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:18,617 INFO L93 Difference]: Finished difference Result 2885498 states and 3480400 transitions. [2019-09-08 07:46:18,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2019-09-08 07:46:18,619 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 133 [2019-09-08 07:46:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:25,727 INFO L225 Difference]: With dead ends: 2885498 [2019-09-08 07:46:25,727 INFO L226 Difference]: Without dead ends: 2562506 [2019-09-08 07:46:26,564 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 444 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86877 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=19706, Invalid=178763, Unknown=1, NotChecked=0, Total=198470 [2019-09-08 07:46:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562506 states.