/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:57:48,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:57:48,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:57:48,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:57:48,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:57:48,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:57:48,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:57:48,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:57:48,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:57:48,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:57:48,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:57:48,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:57:48,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:57:48,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:57:48,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:57:48,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:57:48,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:57:48,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:57:48,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:57:48,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:57:48,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:57:48,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:57:48,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:57:48,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:57:48,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:57:48,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:57:48,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:57:48,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:57:48,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:57:48,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:57:48,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:57:48,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:57:48,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:57:48,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:57:48,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:57:48,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:57:48,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:57:48,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:57:48,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:57:48,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:57:48,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:57:48,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:57:48,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:57:48,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:57:48,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:57:48,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:57:48,476 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:57:48,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:57:48,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:57:48,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:57:48,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:57:48,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:57:48,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:57:48,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:57:48,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:57:48,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:57:48,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:57:48,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:57:48,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:57:48,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:57:48,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:57:48,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:57:48,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:57:48,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:57:48,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:57:48,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:57:48,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:57:48,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:57:48,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:57:48,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:57:48,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:57:48,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:57:48,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:57:48,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:57:48,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:57:48,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:57:48,804 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:57:48,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-22 02:57:48,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00856f672/71fafa88fa214f2d9e9db95c171ebcb4/FLAG5a3d6a196 [2020-08-22 02:57:49,402 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:57:49,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-22 02:57:49,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00856f672/71fafa88fa214f2d9e9db95c171ebcb4/FLAG5a3d6a196 [2020-08-22 02:57:49,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00856f672/71fafa88fa214f2d9e9db95c171ebcb4 [2020-08-22 02:57:49,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:57:49,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:57:49,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:57:49,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:57:49,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:57:49,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:57:49" (1/1) ... [2020-08-22 02:57:49,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:49, skipping insertion in model container [2020-08-22 02:57:49,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:57:49" (1/1) ... [2020-08-22 02:57:49,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:57:49,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:57:50,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:57:50,297 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:57:50,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:57:50,412 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:57:50,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50 WrapperNode [2020-08-22 02:57:50,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:57:50,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:57:50,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:57:50,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:57:50,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... [2020-08-22 02:57:50,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:57:50,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:57:50,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:57:50,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:57:50,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-22 02:57:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:57:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:57:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:57:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:57:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:57:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:57:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:57:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:57:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:57:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:57:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:57:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:57:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:57:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:57:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:57:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:57:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:57:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:57:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:57:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:57:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:57:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:57:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:57:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:57:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:57:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:57:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:57:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:57:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:57:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:57:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:57:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:57:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:57:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:57:51,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:57:51,752 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:57:51,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:57:51 BoogieIcfgContainer [2020-08-22 02:57:51,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:57:51,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:57:51,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:57:51,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:57:51,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:57:49" (1/3) ... [2020-08-22 02:57:51,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42217f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:57:51, skipping insertion in model container [2020-08-22 02:57:51,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:57:50" (2/3) ... [2020-08-22 02:57:51,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42217f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:57:51, skipping insertion in model container [2020-08-22 02:57:51,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:57:51" (3/3) ... [2020-08-22 02:57:51,766 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-22 02:57:51,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:57:51,785 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:57:51,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:57:51,826 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:57:51,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:57:51,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:57:51,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:57:51,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:57:51,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:57:51,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:57:51,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:57:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 02:57:51,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:57:51,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:57:51,863 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:57:51,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:57:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:57:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-22 02:57:51,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:57:51,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995975791] [2020-08-22 02:57:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:57:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,528 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:57:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:57:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:57:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:57:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:57:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:57:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:57:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:57:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:57:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:57:52,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995975791] [2020-08-22 02:57:52,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:57:52,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:57:52,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591501054] [2020-08-22 02:57:52,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:57:52,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:57:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:57:52,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:57:52,680 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-22 02:57:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:57:53,734 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-22 02:57:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:57:53,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:57:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:57:53,754 INFO L225 Difference]: With dead ends: 303 [2020-08-22 02:57:53,755 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 02:57:53,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:57:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 02:57:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-22 02:57:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 02:57:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-22 02:57:53,854 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-22 02:57:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:57:53,854 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-22 02:57:53,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:57:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-22 02:57:53,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 02:57:53,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:57:53,858 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:57:53,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:57:53,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:57:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:57:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-22 02:57:53,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:57:53,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435351361] [2020-08-22 02:57:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:57:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,211 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:57:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:57:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:57:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:57:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:57:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:57:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:57:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:57:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:57:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:57:54,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435351361] [2020-08-22 02:57:54,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:57:54,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:57:54,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024979190] [2020-08-22 02:57:54,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:57:54,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:57:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:57:54,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:57:54,310 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-22 02:57:54,765 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:57:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:57:55,467 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-22 02:57:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:57:55,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 02:57:55,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:57:55,471 INFO L225 Difference]: With dead ends: 248 [2020-08-22 02:57:55,472 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 02:57:55,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:57:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 02:57:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-22 02:57:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 02:57:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-22 02:57:55,534 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-22 02:57:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:57:55,534 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-22 02:57:55,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:57:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-22 02:57:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:57:55,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:57:55,547 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:57:55,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:57:55,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:57:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:57:55,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-22 02:57:55,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:57:55,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709102523] [2020-08-22 02:57:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:57:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:55,953 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:57:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:55,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:57:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:57:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:55,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:57:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:57:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:57:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:57:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:57:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:57:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:57:56,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709102523] [2020-08-22 02:57:56,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:57:56,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:57:56,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77759067] [2020-08-22 02:57:56,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:57:56,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:57:56,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:57:56,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:57:56,049 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-22 02:57:56,508 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:57:56,835 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:57:57,101 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:57:57,388 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:57:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:57:58,555 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-22 02:57:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 02:57:58,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 02:57:58,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:57:58,558 INFO L225 Difference]: With dead ends: 257 [2020-08-22 02:57:58,559 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 02:57:58,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:57:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 02:57:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-22 02:57:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 02:57:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-22 02:57:58,596 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-22 02:57:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:57:58,596 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-22 02:57:58,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:57:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-22 02:57:58,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 02:57:58,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:57:58,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:57:58,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:57:58,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:57:58,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:57:58,599 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-22 02:57:58,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:57:58,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940069743] [2020-08-22 02:57:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:57:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,850 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:57:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:57:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:57:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:57:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:57:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:57:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:57:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:57:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:57:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:57:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:57:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 02:57:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 02:57:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:57:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:57:58,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940069743] [2020-08-22 02:57:58,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:57:58,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:57:58,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997143655] [2020-08-22 02:57:58,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:57:58,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:57:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:57:58,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:57:58,983 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-22 02:57:59,340 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:00,653 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:01,206 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-22 02:58:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:58:01,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-22 02:58:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:01,211 INFO L225 Difference]: With dead ends: 356 [2020-08-22 02:58:01,211 INFO L226 Difference]: Without dead ends: 255 [2020-08-22 02:58:01,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-22 02:58:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-22 02:58:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-22 02:58:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-22 02:58:01,256 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-22 02:58:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:01,257 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-22 02:58:01,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:58:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-22 02:58:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 02:58:01,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:01,259 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:58:01,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:58:01,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-22 02:58:01,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:01,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409951505] [2020-08-22 02:58:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,577 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:58:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:58:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:58:01,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409951505] [2020-08-22 02:58:01,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:01,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:58:01,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973179344] [2020-08-22 02:58:01,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:58:01,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:58:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:58:01,689 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-22 02:58:02,296 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:02,988 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:03,677 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:04,019 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:04,452 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:04,698 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:05,247 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-22 02:58:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:58:05,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-22 02:58:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:05,251 INFO L225 Difference]: With dead ends: 438 [2020-08-22 02:58:05,251 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 02:58:05,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:58:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 02:58:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-22 02:58:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-22 02:58:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-22 02:58:05,298 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-22 02:58:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:05,299 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-22 02:58:05,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:58:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-22 02:58:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 02:58:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:05,301 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:58:05,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:58:05,301 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-22 02:58:05,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:05,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159661754] [2020-08-22 02:58:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,602 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 02:58:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 02:58:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:05,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159661754] [2020-08-22 02:58:05,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:05,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:58:05,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255518200] [2020-08-22 02:58:05,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:58:05,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:05,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:58:05,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:58:05,753 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-22 02:58:06,749 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:07,006 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:07,265 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:07,537 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:08,211 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-22 02:58:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:58:08,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-22 02:58:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:08,215 INFO L225 Difference]: With dead ends: 436 [2020-08-22 02:58:08,215 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 02:58:08,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:58:08,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 02:58:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-22 02:58:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 02:58:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-22 02:58:08,251 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-22 02:58:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:08,252 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-22 02:58:08,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:58:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-22 02:58:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 02:58:08,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:08,253 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:58:08,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:58:08,254 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:08,254 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-22 02:58:08,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:08,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810892922] [2020-08-22 02:58:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,511 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 02:58:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 02:58:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:08,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810892922] [2020-08-22 02:58:08,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:08,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:58:08,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968896280] [2020-08-22 02:58:08,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:58:08,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:08,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:58:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:58:08,689 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-22 02:58:09,489 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:09,780 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:10,016 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:10,662 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:10,915 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:11,153 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:11,932 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-22 02:58:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:58:11,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-22 02:58:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:11,938 INFO L225 Difference]: With dead ends: 448 [2020-08-22 02:58:11,938 INFO L226 Difference]: Without dead ends: 260 [2020-08-22 02:58:11,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:58:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-22 02:58:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-22 02:58:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 02:58:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-22 02:58:11,993 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-22 02:58:11,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:11,993 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-22 02:58:11,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:58:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-22 02:58:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 02:58:11,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:11,998 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:58:11,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:58:11,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:11,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-22 02:58:11,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:12,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881217185] [2020-08-22 02:58:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,253 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:58:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:58:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 02:58:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 02:58:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:12,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881217185] [2020-08-22 02:58:12,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:12,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:58:12,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111178552] [2020-08-22 02:58:12,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:58:12,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:12,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:58:12,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:58:12,421 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-22 02:58:12,862 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:13,423 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:14,975 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-22 02:58:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:58:14,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-22 02:58:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:14,980 INFO L225 Difference]: With dead ends: 617 [2020-08-22 02:58:14,980 INFO L226 Difference]: Without dead ends: 425 [2020-08-22 02:58:14,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:58:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-22 02:58:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-22 02:58:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-22 02:58:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-22 02:58:15,050 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-22 02:58:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:15,050 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-22 02:58:15,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:58:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-22 02:58:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 02:58:15,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:15,052 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 02:58:15,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:58:15,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-22 02:58:15,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:15,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391179153] [2020-08-22 02:58:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,407 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:58:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:58:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 02:58:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 02:58:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:58:15,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391179153] [2020-08-22 02:58:15,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:58:15,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:58:15,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653732687] [2020-08-22 02:58:15,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:58:15,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:15,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:58:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:58:15,621 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-22 02:58:16,133 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:16,739 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:17,717 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:18,026 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:18,257 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:18,530 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:18,804 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:19,878 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:20,126 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:20,649 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-22 02:58:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:58:20,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-22 02:58:20,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:20,660 INFO L225 Difference]: With dead ends: 1065 [2020-08-22 02:58:20,660 INFO L226 Difference]: Without dead ends: 776 [2020-08-22 02:58:20,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 02:58:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-22 02:58:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-22 02:58:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-22 02:58:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-22 02:58:20,779 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-22 02:58:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:20,780 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-22 02:58:20,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:58:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-22 02:58:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 02:58:20,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:20,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:20,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:58:20,783 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:20,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-22 02:58:20,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:20,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560286369] [2020-08-22 02:58:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,096 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:58:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 02:58:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 02:58:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:58:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:58:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 02:58:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 02:58:21,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560286369] [2020-08-22 02:58:21,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:21,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:58:21,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707626013] [2020-08-22 02:58:21,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:58:21,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:58:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:21,361 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-22 02:58:22,390 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:22,839 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:23,087 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:23,334 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:58:23,939 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:24,210 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:24,967 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:25,317 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:26,205 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:26,487 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:26,750 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:27,043 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:27,600 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:27,992 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:28,385 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:29,033 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:29,316 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:29,983 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-22 02:58:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-22 02:58:29,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-22 02:58:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:29,992 INFO L225 Difference]: With dead ends: 1445 [2020-08-22 02:58:29,992 INFO L226 Difference]: Without dead ends: 873 [2020-08-22 02:58:29,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 02:58:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-22 02:58:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-22 02:58:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-22 02:58:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-22 02:58:30,141 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-22 02:58:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:30,145 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-22 02:58:30,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:58:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-22 02:58:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 02:58:30,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:30,151 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:58:30,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:58:30,152 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:30,152 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-22 02:58:30,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:30,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483502964] [2020-08-22 02:58:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,487 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:58:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:58:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 02:58:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 02:58:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 02:58:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 02:58:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 02:58:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-22 02:58:30,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483502964] [2020-08-22 02:58:30,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:30,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:58:30,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041967249] [2020-08-22 02:58:30,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:58:30,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:58:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:58:30,950 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-22 02:58:32,480 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:32,745 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:32,983 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:33,220 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:34,531 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:35,167 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-22 02:58:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:58:35,168 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-22 02:58:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:35,175 INFO L225 Difference]: With dead ends: 2078 [2020-08-22 02:58:35,175 INFO L226 Difference]: Without dead ends: 1225 [2020-08-22 02:58:35,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 02:58:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-22 02:58:35,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-22 02:58:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-22 02:58:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-22 02:58:35,341 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-22 02:58:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:35,341 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-22 02:58:35,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:58:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-22 02:58:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-22 02:58:35,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:35,348 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:58:35,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:58:35,348 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-22 02:58:35,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:35,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041739646] [2020-08-22 02:58:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,632 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:58:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:58:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:58:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 02:58:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 02:58:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 02:58:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-22 02:58:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 02:58:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:35,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-22 02:58:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-22 02:58:36,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041739646] [2020-08-22 02:58:36,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:36,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:58:36,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077663612] [2020-08-22 02:58:36,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:58:36,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:58:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:58:36,143 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-22 02:58:37,476 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:37,790 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:38,042 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:38,277 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:58:38,887 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:39,638 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:58:39,978 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:40,225 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:40,811 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:41,570 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:41,811 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:42,298 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-22 02:58:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:58:42,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-22 02:58:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:42,307 INFO L225 Difference]: With dead ends: 1968 [2020-08-22 02:58:42,307 INFO L226 Difference]: Without dead ends: 1042 [2020-08-22 02:58:42,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 02:58:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-22 02:58:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-22 02:58:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-22 02:58:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-22 02:58:42,506 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-22 02:58:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:42,507 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-22 02:58:42,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:58:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-22 02:58:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-22 02:58:42,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:42,515 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:58:42,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:58:42,516 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:42,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:42,516 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-22 02:58:42,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:42,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803354464] [2020-08-22 02:58:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,814 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:58:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:58:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:58:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 02:58:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 02:58:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 02:58:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 02:58:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-22 02:58:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-22 02:58:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-22 02:58:43,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803354464] [2020-08-22 02:58:43,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:43,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 02:58:43,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089025432] [2020-08-22 02:58:43,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:58:43,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:43,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:58:43,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:58:43,160 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-22 02:58:44,706 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:58:44,950 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:58:45,194 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:45,433 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:58:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:58:45,862 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-22 02:58:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:58:45,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-22 02:58:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:58:45,871 INFO L225 Difference]: With dead ends: 1920 [2020-08-22 02:58:45,871 INFO L226 Difference]: Without dead ends: 1034 [2020-08-22 02:58:45,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:58:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-22 02:58:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-22 02:58:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-22 02:58:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-22 02:58:46,037 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-22 02:58:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:58:46,037 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-22 02:58:46,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:58:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-22 02:58:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-22 02:58:46,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:58:46,042 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 02:58:46,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 02:58:46,043 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:58:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:58:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-22 02:58:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:58:46,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708298234] [2020-08-22 02:58:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:58:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,365 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:58:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:58:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:58:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:58:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:58:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:58:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:58:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:58:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:58:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:58:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:58:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 02:58:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:58:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:58:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 02:58:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:58:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 02:58:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:58:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-22 02:58:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:58:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:58:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:58:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-22 02:58:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-22 02:58:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:58:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-22 02:58:46,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708298234] [2020-08-22 02:58:46,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:58:46,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:58:46,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892169443] [2020-08-22 02:58:46,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:58:46,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:58:46,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:58:46,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:58:46,900 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states.