java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:46:12,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:46:12,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:46:12,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:46:12,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:46:12,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:46:12,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:46:12,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:46:12,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:46:12,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:46:12,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:46:12,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:46:12,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:46:12,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:46:12,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:46:12,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:46:12,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:46:12,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:46:12,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:46:12,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:46:12,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:46:12,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:46:12,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:46:12,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:46:12,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:46:12,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:46:12,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:46:12,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:46:12,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:46:12,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:46:12,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:46:12,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:46:12,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:46:12,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:46:12,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:46:12,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:46:12,459 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 07:46:12,484 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:46:12,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:46:12,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:46:12,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:46:12,488 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:46:12,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:46:12,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:46:12,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:46:12,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:46:12,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:46:12,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:46:12,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:46:12,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:46:12,491 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:46:12,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:46:12,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:46:12,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:46:12,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:46:12,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:46:12,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:46:12,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:46:12,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:46:12,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:46:12,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:46:12,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:46:12,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:46:12,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:46:12,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:46:12,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:46:12,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:46:12,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:46:12,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:46:12,571 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:46:12,571 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:46:12,572 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2019-09-08 07:46:12,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d823fc792/b20686a76532472893d7a45bfd316aad/FLAGe178a700c [2019-09-08 07:46:13,109 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:46:13,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2019-09-08 07:46:13,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d823fc792/b20686a76532472893d7a45bfd316aad/FLAGe178a700c [2019-09-08 07:46:13,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d823fc792/b20686a76532472893d7a45bfd316aad [2019-09-08 07:46:13,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:46:13,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:46:13,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:46:13,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:46:13,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:46:13,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:46:13" (1/1) ... [2019-09-08 07:46:13,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324045ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:13, skipping insertion in model container [2019-09-08 07:46:13,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:46:13" (1/1) ... [2019-09-08 07:46:13,488 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:46:13,543 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:46:13,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:46:13,925 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:46:14,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:46:14,021 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:46:14,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14 WrapperNode [2019-09-08 07:46:14,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:46:14,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:46:14,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:46:14,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:46:14,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (1/1) ... [2019-09-08 07:46:14,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:46:14,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:46:14,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:46:14,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:46:14,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (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 07:46:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:46:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2019-09-08 07:46:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2019-09-08 07:46:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:46:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:46:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:46:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:46:14,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:46:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:46:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:46:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:46:15,001 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:46:15,001 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:46:15,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:46:15 BoogieIcfgContainer [2019-09-08 07:46:15,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:46:15,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:46:15,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:46:15,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:46:15,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:46:13" (1/3) ... [2019-09-08 07:46:15,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dddacc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:46:15, skipping insertion in model container [2019-09-08 07:46:15,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:14" (2/3) ... [2019-09-08 07:46:15,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dddacc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:46:15, skipping insertion in model container [2019-09-08 07:46:15,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:46:15" (3/3) ... [2019-09-08 07:46:15,015 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2019-09-08 07:46:15,025 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:46:15,035 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:46:15,049 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:46:15,079 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:46:15,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:46:15,080 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:46:15,080 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:46:15,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:46:15,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:46:15,081 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:46:15,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:46:15,082 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:46:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2019-09-08 07:46:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 07:46:15,122 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:15,124 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] [2019-09-08 07:46:15,126 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash -404662855, now seen corresponding path program 1 times [2019-09-08 07:46:15,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:15,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:15,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:15,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:15,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:15,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:15,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:15,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:15,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:15,626 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 5 states. [2019-09-08 07:46:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:15,805 INFO L93 Difference]: Finished difference Result 306 states and 469 transitions. [2019-09-08 07:46:15,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:46:15,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-09-08 07:46:15,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:15,820 INFO L225 Difference]: With dead ends: 306 [2019-09-08 07:46:15,820 INFO L226 Difference]: Without dead ends: 175 [2019-09-08 07:46:15,824 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 07:46:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-09-08 07:46:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2019-09-08 07:46:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-09-08 07:46:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 233 transitions. [2019-09-08 07:46:15,877 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 233 transitions. Word has length 69 [2019-09-08 07:46:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:15,878 INFO L475 AbstractCegarLoop]: Abstraction has 175 states and 233 transitions. [2019-09-08 07:46:15,878 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 233 transitions. [2019-09-08 07:46:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-08 07:46:15,884 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:15,884 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:15,885 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:15,885 INFO L82 PathProgramCache]: Analyzing trace with hash 948036099, now seen corresponding path program 1 times [2019-09-08 07:46:15,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:15,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:15,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:15,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:16,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:16,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-09-08 07:46:16,425 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 07:46:16,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 07:46:16,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:46:16,427 INFO L87 Difference]: Start difference. First operand 175 states and 233 transitions. Second operand 15 states. [2019-09-08 07:46:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:24,981 INFO L93 Difference]: Finished difference Result 1865 states and 2876 transitions. [2019-09-08 07:46:24,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-09-08 07:46:24,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2019-09-08 07:46:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:25,031 INFO L225 Difference]: With dead ends: 1865 [2019-09-08 07:46:25,031 INFO L226 Difference]: Without dead ends: 1743 [2019-09-08 07:46:25,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1105, Invalid=3865, Unknown=0, NotChecked=0, Total=4970 [2019-09-08 07:46:25,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2019-09-08 07:46:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1171. [2019-09-08 07:46:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2019-09-08 07:46:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1731 transitions. [2019-09-08 07:46:25,342 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1731 transitions. Word has length 109 [2019-09-08 07:46:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:25,346 INFO L475 AbstractCegarLoop]: Abstraction has 1171 states and 1731 transitions. [2019-09-08 07:46:25,346 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 07:46:25,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1731 transitions. [2019-09-08 07:46:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-08 07:46:25,366 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:25,367 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:25,368 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:25,369 INFO L82 PathProgramCache]: Analyzing trace with hash -956491520, now seen corresponding path program 1 times [2019-09-08 07:46:25,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:25,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:25,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:25,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:25,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:25,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:25,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:46:25,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:25,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:25,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:25,683 INFO L87 Difference]: Start difference. First operand 1171 states and 1731 transitions. Second operand 8 states. [2019-09-08 07:46:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:25,870 INFO L93 Difference]: Finished difference Result 1353 states and 2037 transitions. [2019-09-08 07:46:25,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:25,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2019-09-08 07:46:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:25,890 INFO L225 Difference]: With dead ends: 1353 [2019-09-08 07:46:25,891 INFO L226 Difference]: Without dead ends: 1351 [2019-09-08 07:46:25,893 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:46:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2019-09-08 07:46:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1252. [2019-09-08 07:46:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2019-09-08 07:46:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1812 transitions. [2019-09-08 07:46:26,048 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1812 transitions. Word has length 110 [2019-09-08 07:46:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:26,050 INFO L475 AbstractCegarLoop]: Abstraction has 1252 states and 1812 transitions. [2019-09-08 07:46:26,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1812 transitions. [2019-09-08 07:46:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 07:46:26,061 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:26,062 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:26,062 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:26,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1712679803, now seen corresponding path program 1 times [2019-09-08 07:46:26,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:26,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:26,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:26,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:26,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:26,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:26,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:26,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:26,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:26,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:26,341 INFO L87 Difference]: Start difference. First operand 1252 states and 1812 transitions. Second operand 5 states. [2019-09-08 07:46:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:27,361 INFO L93 Difference]: Finished difference Result 4576 states and 6743 transitions. [2019-09-08 07:46:27,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:46:27,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-09-08 07:46:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:27,383 INFO L225 Difference]: With dead ends: 4576 [2019-09-08 07:46:27,384 INFO L226 Difference]: Without dead ends: 3377 [2019-09-08 07:46:27,392 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:46:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2019-09-08 07:46:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3338. [2019-09-08 07:46:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3338 states. [2019-09-08 07:46:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4873 transitions. [2019-09-08 07:46:27,648 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4873 transitions. Word has length 111 [2019-09-08 07:46:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:27,649 INFO L475 AbstractCegarLoop]: Abstraction has 3338 states and 4873 transitions. [2019-09-08 07:46:27,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4873 transitions. [2019-09-08 07:46:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:27,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:27,654 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:27,654 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash -283205894, now seen corresponding path program 1 times [2019-09-08 07:46:27,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:27,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:27,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:27,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:27,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:27,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:27,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:27,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:27,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:27,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:27,847 INFO L87 Difference]: Start difference. First operand 3338 states and 4873 transitions. Second operand 5 states. [2019-09-08 07:46:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:28,831 INFO L93 Difference]: Finished difference Result 6860 states and 10022 transitions. [2019-09-08 07:46:28,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:46:28,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-08 07:46:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:28,868 INFO L225 Difference]: With dead ends: 6860 [2019-09-08 07:46:28,869 INFO L226 Difference]: Without dead ends: 4556 [2019-09-08 07:46:28,880 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2019-09-08 07:46:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4554. [2019-09-08 07:46:29,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2019-09-08 07:46:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6577 transitions. [2019-09-08 07:46:29,183 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6577 transitions. Word has length 112 [2019-09-08 07:46:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:29,184 INFO L475 AbstractCegarLoop]: Abstraction has 4554 states and 6577 transitions. [2019-09-08 07:46:29,184 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6577 transitions. [2019-09-08 07:46:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:29,187 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:29,187 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:29,187 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:29,188 INFO L82 PathProgramCache]: Analyzing trace with hash -357313033, now seen corresponding path program 1 times [2019-09-08 07:46:29,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:29,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:29,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:29,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:29,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:29,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:29,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:29,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:29,344 INFO L87 Difference]: Start difference. First operand 4554 states and 6577 transitions. Second operand 9 states. [2019-09-08 07:46:30,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:30,567 INFO L93 Difference]: Finished difference Result 11782 states and 17158 transitions. [2019-09-08 07:46:30,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:30,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-08 07:46:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:30,611 INFO L225 Difference]: With dead ends: 11782 [2019-09-08 07:46:30,611 INFO L226 Difference]: Without dead ends: 7285 [2019-09-08 07:46:30,625 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2019-09-08 07:46:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 4578. [2019-09-08 07:46:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4578 states. [2019-09-08 07:46:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6610 transitions. [2019-09-08 07:46:30,896 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6610 transitions. Word has length 112 [2019-09-08 07:46:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:30,896 INFO L475 AbstractCegarLoop]: Abstraction has 4578 states and 6610 transitions. [2019-09-08 07:46:30,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6610 transitions. [2019-09-08 07:46:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:30,899 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:30,899 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:30,900 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash -182811423, now seen corresponding path program 1 times [2019-09-08 07:46:30,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:30,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:30,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:30,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:30,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:31,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:31,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:31,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:31,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:31,072 INFO L87 Difference]: Start difference. First operand 4578 states and 6610 transitions. Second operand 9 states. [2019-09-08 07:46:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:32,186 INFO L93 Difference]: Finished difference Result 10025 states and 14457 transitions. [2019-09-08 07:46:32,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:32,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-08 07:46:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:32,220 INFO L225 Difference]: With dead ends: 10025 [2019-09-08 07:46:32,220 INFO L226 Difference]: Without dead ends: 5519 [2019-09-08 07:46:32,233 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2019-09-08 07:46:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4682. [2019-09-08 07:46:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4682 states. [2019-09-08 07:46:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 6760 transitions. [2019-09-08 07:46:32,530 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 6760 transitions. Word has length 112 [2019-09-08 07:46:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:32,531 INFO L475 AbstractCegarLoop]: Abstraction has 4682 states and 6760 transitions. [2019-09-08 07:46:32,531 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 6760 transitions. [2019-09-08 07:46:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:32,537 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:32,538 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:32,538 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:32,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1043156884, now seen corresponding path program 1 times [2019-09-08 07:46:32,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:32,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:32,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:32,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:32,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:32,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:32,683 INFO L87 Difference]: Start difference. First operand 4682 states and 6760 transitions. Second operand 9 states. [2019-09-08 07:46:33,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:33,996 INFO L93 Difference]: Finished difference Result 9470 states and 13597 transitions. [2019-09-08 07:46:33,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:33,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-08 07:46:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:34,047 INFO L225 Difference]: With dead ends: 9470 [2019-09-08 07:46:34,047 INFO L226 Difference]: Without dead ends: 4949 [2019-09-08 07:46:34,064 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2019-09-08 07:46:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4735. [2019-09-08 07:46:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4735 states. [2019-09-08 07:46:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 6834 transitions. [2019-09-08 07:46:34,351 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 6834 transitions. Word has length 112 [2019-09-08 07:46:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:34,352 INFO L475 AbstractCegarLoop]: Abstraction has 4735 states and 6834 transitions. [2019-09-08 07:46:34,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 6834 transitions. [2019-09-08 07:46:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:34,354 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:34,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:34,354 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:34,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1296232565, now seen corresponding path program 1 times [2019-09-08 07:46:34,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:34,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:34,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:34,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:34,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:34,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:34,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:34,497 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:34,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:34,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:34,498 INFO L87 Difference]: Start difference. First operand 4735 states and 6834 transitions. Second operand 9 states. [2019-09-08 07:46:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:35,777 INFO L93 Difference]: Finished difference Result 10794 states and 15595 transitions. [2019-09-08 07:46:35,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:35,777 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-08 07:46:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:35,804 INFO L225 Difference]: With dead ends: 10794 [2019-09-08 07:46:35,804 INFO L226 Difference]: Without dead ends: 6190 [2019-09-08 07:46:35,817 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2019-09-08 07:46:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 4855. [2019-09-08 07:46:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4855 states. [2019-09-08 07:46:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7012 transitions. [2019-09-08 07:46:36,063 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7012 transitions. Word has length 112 [2019-09-08 07:46:36,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:36,063 INFO L475 AbstractCegarLoop]: Abstraction has 4855 states and 7012 transitions. [2019-09-08 07:46:36,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:36,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7012 transitions. [2019-09-08 07:46:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-08 07:46:36,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:36,066 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:36,067 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2138874059, now seen corresponding path program 1 times [2019-09-08 07:46:36,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:36,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:36,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:36,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:36,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:36,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:36,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:36,227 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:36,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:36,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:36,228 INFO L87 Difference]: Start difference. First operand 4855 states and 7012 transitions. Second operand 9 states. [2019-09-08 07:46:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:37,453 INFO L93 Difference]: Finished difference Result 11820 states and 17154 transitions. [2019-09-08 07:46:37,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:37,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-08 07:46:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:37,485 INFO L225 Difference]: With dead ends: 11820 [2019-09-08 07:46:37,485 INFO L226 Difference]: Without dead ends: 7062 [2019-09-08 07:46:37,498 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2019-09-08 07:46:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 4885. [2019-09-08 07:46:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4885 states. [2019-09-08 07:46:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 7060 transitions. [2019-09-08 07:46:37,746 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 7060 transitions. Word has length 112 [2019-09-08 07:46:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:37,747 INFO L475 AbstractCegarLoop]: Abstraction has 4885 states and 7060 transitions. [2019-09-08 07:46:37,747 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 7060 transitions. [2019-09-08 07:46:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-08 07:46:37,751 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:37,752 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:37,752 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1501164675, now seen corresponding path program 1 times [2019-09-08 07:46:37,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:37,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:37,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:37,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:37,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-08 07:46:37,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:37,873 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:37,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:38,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:38,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-08 07:46:38,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:38,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:38,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:38,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:38,354 INFO L87 Difference]: Start difference. First operand 4885 states and 7060 transitions. Second operand 8 states. [2019-09-08 07:46:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:39,658 INFO L93 Difference]: Finished difference Result 14241 states and 20651 transitions. [2019-09-08 07:46:39,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:39,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2019-09-08 07:46:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:39,713 INFO L225 Difference]: With dead ends: 14241 [2019-09-08 07:46:39,713 INFO L226 Difference]: Without dead ends: 9432 [2019-09-08 07:46:39,727 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:46:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2019-09-08 07:46:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 8943. [2019-09-08 07:46:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8943 states. [2019-09-08 07:46:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8943 states to 8943 states and 12830 transitions. [2019-09-08 07:46:40,295 INFO L78 Accepts]: Start accepts. Automaton has 8943 states and 12830 transitions. Word has length 170 [2019-09-08 07:46:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:40,295 INFO L475 AbstractCegarLoop]: Abstraction has 8943 states and 12830 transitions. [2019-09-08 07:46:40,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:40,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8943 states and 12830 transitions. [2019-09-08 07:46:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-09-08 07:46:40,305 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:40,307 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:40,307 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2107696819, now seen corresponding path program 1 times [2019-09-08 07:46:40,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:40,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:40,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:40,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:40,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-08 07:46:40,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:40,440 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:40,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:40,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:40,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-08 07:46:40,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:40,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:40,775 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:40,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:40,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:40,777 INFO L87 Difference]: Start difference. First operand 8943 states and 12830 transitions. Second operand 8 states. [2019-09-08 07:46:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:42,181 INFO L93 Difference]: Finished difference Result 25848 states and 37163 transitions. [2019-09-08 07:46:42,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:42,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2019-09-08 07:46:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:42,247 INFO L225 Difference]: With dead ends: 25848 [2019-09-08 07:46:42,247 INFO L226 Difference]: Without dead ends: 16987 [2019-09-08 07:46:42,271 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:46:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16987 states. [2019-09-08 07:46:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16987 to 16371. [2019-09-08 07:46:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16371 states. [2019-09-08 07:46:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16371 states to 16371 states and 23279 transitions. [2019-09-08 07:46:43,158 INFO L78 Accepts]: Start accepts. Automaton has 16371 states and 23279 transitions. Word has length 171 [2019-09-08 07:46:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:43,158 INFO L475 AbstractCegarLoop]: Abstraction has 16371 states and 23279 transitions. [2019-09-08 07:46:43,158 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 16371 states and 23279 transitions. [2019-09-08 07:46:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-08 07:46:43,168 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:43,168 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:43,168 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 99286433, now seen corresponding path program 1 times [2019-09-08 07:46:43,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:43,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:43,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:43,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:43,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-08 07:46:43,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:43,287 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 07:46:43,302 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 07:46:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:43,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:43,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-08 07:46:43,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:43,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:43,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:43,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:43,578 INFO L87 Difference]: Start difference. First operand 16371 states and 23279 transitions. Second operand 8 states. [2019-09-08 07:46:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:45,565 INFO L93 Difference]: Finished difference Result 48071 states and 68495 transitions. [2019-09-08 07:46:45,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:45,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2019-09-08 07:46:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:45,699 INFO L225 Difference]: With dead ends: 48071 [2019-09-08 07:46:45,700 INFO L226 Difference]: Without dead ends: 31800 [2019-09-08 07:46:45,752 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:46:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31800 states. [2019-09-08 07:46:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31800 to 30818. [2019-09-08 07:46:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30818 states. [2019-09-08 07:46:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30818 states to 30818 states and 43415 transitions. [2019-09-08 07:46:47,570 INFO L78 Accepts]: Start accepts. Automaton has 30818 states and 43415 transitions. Word has length 172 [2019-09-08 07:46:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:47,571 INFO L475 AbstractCegarLoop]: Abstraction has 30818 states and 43415 transitions. [2019-09-08 07:46:47,571 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 30818 states and 43415 transitions. [2019-09-08 07:46:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-08 07:46:47,587 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:47,587 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:47,588 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:47,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1664852203, now seen corresponding path program 1 times [2019-09-08 07:46:47,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:47,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:47,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:47,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:47,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-08 07:46:47,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:47,712 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:47,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:47,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:47,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:46:48,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:48,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:48,005 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:48,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:48,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:48,006 INFO L87 Difference]: Start difference. First operand 30818 states and 43415 transitions. Second operand 8 states. [2019-09-08 07:46:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:51,476 INFO L93 Difference]: Finished difference Result 90513 states and 127787 transitions. [2019-09-08 07:46:51,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:51,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2019-09-08 07:46:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:51,727 INFO L225 Difference]: With dead ends: 90513 [2019-09-08 07:46:51,727 INFO L226 Difference]: Without dead ends: 59807 [2019-09-08 07:46:51,791 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:46:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59807 states. [2019-09-08 07:46:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59807 to 57845. [2019-09-08 07:46:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57845 states. [2019-09-08 07:46:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57845 states to 57845 states and 80671 transitions. [2019-09-08 07:46:55,835 INFO L78 Accepts]: Start accepts. Automaton has 57845 states and 80671 transitions. Word has length 173 [2019-09-08 07:46:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:55,836 INFO L475 AbstractCegarLoop]: Abstraction has 57845 states and 80671 transitions. [2019-09-08 07:46:55,836 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 57845 states and 80671 transitions. [2019-09-08 07:46:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-08 07:46:55,857 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:55,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:55,858 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 616420035, now seen corresponding path program 1 times [2019-09-08 07:46:55,859 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:55,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:55,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:55,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:55,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-08 07:46:55,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:55,967 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 07:46:55,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:56,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:56,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 07:46:56,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:56,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:56,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:56,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:56,206 INFO L87 Difference]: Start difference. First operand 57845 states and 80671 transitions. Second operand 8 states. [2019-09-08 07:47:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:03,501 INFO L93 Difference]: Finished difference Result 169899 states and 237395 transitions. [2019-09-08 07:47:03,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:47:03,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2019-09-08 07:47:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:03,897 INFO L225 Difference]: With dead ends: 169899 [2019-09-08 07:47:03,897 INFO L226 Difference]: Without dead ends: 112178 [2019-09-08 07:47:03,993 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 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 07:47:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112178 states. [2019-09-08 07:47:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112178 to 108256. [2019-09-08 07:47:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108256 states. [2019-09-08 07:47:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108256 states to 108256 states and 149207 transitions. [2019-09-08 07:47:11,143 INFO L78 Accepts]: Start accepts. Automaton has 108256 states and 149207 transitions. Word has length 174 [2019-09-08 07:47:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:11,144 INFO L475 AbstractCegarLoop]: Abstraction has 108256 states and 149207 transitions. [2019-09-08 07:47:11,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:47:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 108256 states and 149207 transitions. [2019-09-08 07:47:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-09-08 07:47:11,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:11,172 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:11,173 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:11,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1322575826, now seen corresponding path program 1 times [2019-09-08 07:47:11,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:11,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:11,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:11,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:11,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-08 07:47:11,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:11,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:47:11,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:11,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-08 07:47:11,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:47:12,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:47:12,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 19 [2019-09-08 07:47:12,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 07:47:12,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 07:47:12,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-09-08 07:47:12,126 INFO L87 Difference]: Start difference. First operand 108256 states and 149207 transitions. Second operand 19 states.