/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=BIGGEST --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_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:13:18,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:13:18,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:13:18,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:13:18,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:13:18,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:13:18,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:13:18,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:13:18,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:13:18,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:13:18,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:13:18,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:13:18,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:13:18,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:13:18,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:13:18,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:13:18,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:13:18,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:13:18,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:13:18,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:13:18,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:13:18,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:13:18,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:13:18,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:13:18,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:13:18,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:13:18,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:13:18,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:13:18,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:13:18,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:13:18,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:13:18,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:13:18,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:13:18,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:13:18,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:13:18,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:13:18,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:13:18,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:13:18,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:13:18,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:13:18,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:13:18,614 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 [2020-08-21 17:13:18,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:13:18,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:13:18,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:13:18,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:13:18,644 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:13:18,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:13:18,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:13:18,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:13:18,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:13:18,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:13:18,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:13:18,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:13:18,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:13:18,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:13:18,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:13:18,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:13:18,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:13:18,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:13:18,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:13:18,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:13:18,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:13:18,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:13:18,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:13:18,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:13:18,649 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:13:18,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:13:18,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:13:18,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:13:18,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:13:18,953 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:13:18,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-21 17:13:19,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b56ee3bfc/a2c39c78f1b74571b1b316a1ab3e5679/FLAGdea3ae45c [2020-08-21 17:13:19,499 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:13:19,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-21 17:13:19,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b56ee3bfc/a2c39c78f1b74571b1b316a1ab3e5679/FLAGdea3ae45c [2020-08-21 17:13:19,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b56ee3bfc/a2c39c78f1b74571b1b316a1ab3e5679 [2020-08-21 17:13:19,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:13:19,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:13:19,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:13:19,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:13:19,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:13:19,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:13:19" (1/1) ... [2020-08-21 17:13:19,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:19, skipping insertion in model container [2020-08-21 17:13:19,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:13:19" (1/1) ... [2020-08-21 17:13:19,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:13:19,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:13:20,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:13:20,375 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:13:20,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:13:20,487 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:13:20,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20 WrapperNode [2020-08-21 17:13:20,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:13:20,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:13:20,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:13:20,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:13:20,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (1/1) ... [2020-08-21 17:13:20,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:13:20,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:13:20,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:13:20,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:13:20,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (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 [2020-08-21 17:13:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:13:20,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:13:20,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:13:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:13:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:13:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:13:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:13:20,684 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:13:20,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:13:20,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:13:20,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:13:20,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:13:20,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:13:20,689 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:13:20,689 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:13:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:13:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:13:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:13:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:13:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:13:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:13:20,693 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:13:20,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:13:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:13:20,696 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:13:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 17:13:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:13:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 17:13:20,697 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:13:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:13:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:13:20,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:13:21,875 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:13:21,875 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:13:21,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:13:21 BoogieIcfgContainer [2020-08-21 17:13:21,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:13:21,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:13:21,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:13:21,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:13:21,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:13:19" (1/3) ... [2020-08-21 17:13:21,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad90c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:13:21, skipping insertion in model container [2020-08-21 17:13:21,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:13:20" (2/3) ... [2020-08-21 17:13:21,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad90c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:13:21, skipping insertion in model container [2020-08-21 17:13:21,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:13:21" (3/3) ... [2020-08-21 17:13:21,888 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-21 17:13:21,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:13:21,906 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:13:21,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:13:21,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:13:21,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:13:21,944 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:13:21,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:13:21,945 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:13:21,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:13:21,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:13:21,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:13:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-21 17:13:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:13:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:21,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:21,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-21 17:13:21,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:21,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035788336] [2020-08-21 17:13:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,637 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:13:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:13:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:22,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035788336] [2020-08-21 17:13:22,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:22,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:13:22,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635984487] [2020-08-21 17:13:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:13:22,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:13:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:13:22,785 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-21 17:13:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:23,955 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-21 17:13:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:13:23,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:13:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:23,971 INFO L225 Difference]: With dead ends: 338 [2020-08-21 17:13:23,971 INFO L226 Difference]: Without dead ends: 182 [2020-08-21 17:13:23,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:13:23,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-21 17:13:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-21 17:13:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 17:13:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-21 17:13:24,080 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-21 17:13:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:24,080 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-21 17:13:24,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:13:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-21 17:13:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:13:24,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:24,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:24,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:13:24,085 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:24,086 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-21 17:13:24,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:24,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141797571] [2020-08-21 17:13:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,465 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:13:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:13:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:24,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141797571] [2020-08-21 17:13:24,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:24,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:13:24,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637222787] [2020-08-21 17:13:24,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:13:24,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:24,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:13:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:13:24,510 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-21 17:13:24,882 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:25,751 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-21 17:13:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:13:25,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:13:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:25,756 INFO L225 Difference]: With dead ends: 267 [2020-08-21 17:13:25,756 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 17:13:25,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:13:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 17:13:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 17:13:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 17:13:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-21 17:13:25,797 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-21 17:13:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:25,798 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-21 17:13:25,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:13:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-21 17:13:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:13:25,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:25,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:25,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:13:25,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:25,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-21 17:13:25,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:25,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668697490] [2020-08-21 17:13:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,103 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:13:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:13:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:26,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668697490] [2020-08-21 17:13:26,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:26,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:13:26,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086088500] [2020-08-21 17:13:26,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:13:26,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:13:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:13:26,171 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-21 17:13:26,480 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:26,779 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:27,021 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:27,243 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:28,465 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-21 17:13:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:13:28,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 17:13:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:28,476 INFO L225 Difference]: With dead ends: 280 [2020-08-21 17:13:28,476 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 17:13:28,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 17:13:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 17:13:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 17:13:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-21 17:13:28,519 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-21 17:13:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:28,520 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-21 17:13:28,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:13:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-21 17:13:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 17:13:28,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:28,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:28,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:13:28,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:28,523 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-21 17:13:28,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:28,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71792] [2020-08-21 17:13:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,830 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:13:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:13:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:13:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:28,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71792] [2020-08-21 17:13:28,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:28,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:13:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303036806] [2020-08-21 17:13:28,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:13:28,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:13:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:13:28,911 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-21 17:13:29,168 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:30,348 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:30,968 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-21 17:13:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:13:30,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 17:13:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:30,973 INFO L225 Difference]: With dead ends: 377 [2020-08-21 17:13:30,973 INFO L226 Difference]: Without dead ends: 263 [2020-08-21 17:13:30,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:13:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-21 17:13:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-21 17:13:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 17:13:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-21 17:13:31,041 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-21 17:13:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:31,041 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-21 17:13:31,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:13:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-21 17:13:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:13:31,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:31,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:31,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:13:31,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-21 17:13:31,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:31,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900935549] [2020-08-21 17:13:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,322 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:13:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:13:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:13:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:31,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900935549] [2020-08-21 17:13:31,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:31,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 17:13:31,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470494944] [2020-08-21 17:13:31,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:13:31,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:13:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:13:31,474 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-21 17:13:31,878 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:32,090 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:32,319 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:32,884 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:33,120 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:33,355 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:34,337 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-21 17:13:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:13:34,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-21 17:13:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:34,341 INFO L225 Difference]: With dead ends: 460 [2020-08-21 17:13:34,341 INFO L226 Difference]: Without dead ends: 264 [2020-08-21 17:13:34,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 17:13:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-21 17:13:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-21 17:13:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-21 17:13:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-21 17:13:34,394 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-21 17:13:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:34,394 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-21 17:13:34,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:13:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-21 17:13:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:13:34,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:34,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:34,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:13:34,396 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-21 17:13:34,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:34,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858440174] [2020-08-21 17:13:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,730 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:13:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:13:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:13:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:13:34,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858440174] [2020-08-21 17:13:34,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:13:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:13:34,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204062777] [2020-08-21 17:13:34,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:13:34,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:34,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:13:34,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:34,854 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-21 17:13:35,262 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:35,570 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:35,807 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:36,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:36,527 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:37,403 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:37,702 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:37,944 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:38,218 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:38,526 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:38,766 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:40,082 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:40,471 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:41,083 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-21 17:13:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:13:41,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 17:13:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:41,088 INFO L225 Difference]: With dead ends: 789 [2020-08-21 17:13:41,088 INFO L226 Difference]: Without dead ends: 589 [2020-08-21 17:13:41,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 17:13:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-21 17:13:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-21 17:13:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-21 17:13:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-21 17:13:41,180 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-21 17:13:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:41,181 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-21 17:13:41,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:13:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-21 17:13:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:13:41,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:41,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:41,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:13:41,186 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-21 17:13:41,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:41,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978195970] [2020-08-21 17:13:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,447 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:13:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 17:13:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:13:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 17:13:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 17:13:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-21 17:13:41,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978195970] [2020-08-21 17:13:41,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:41,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:13:41,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700649059] [2020-08-21 17:13:41,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:13:41,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:41,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:13:41,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:13:41,778 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-21 17:13:42,155 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:42,737 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:43,271 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:43,520 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:13:43,791 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:44,038 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:44,276 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:13:44,532 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:13:44,793 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:45,044 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:46,592 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:46,823 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:13:47,049 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:47,264 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:47,757 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-21 17:13:47,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 17:13:47,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-21 17:13:47,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:47,761 INFO L225 Difference]: With dead ends: 937 [2020-08-21 17:13:47,761 INFO L226 Difference]: Without dead ends: 434 [2020-08-21 17:13:47,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 17:13:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-21 17:13:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-21 17:13:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-21 17:13:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-21 17:13:47,834 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-21 17:13:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:47,834 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-21 17:13:47,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:13:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-21 17:13:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 17:13:47,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:47,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:47,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:13:47,838 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:47,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-21 17:13:47,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:47,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436144828] [2020-08-21 17:13:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,077 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:13:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:13:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:13:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 17:13:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 17:13:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 17:13:48,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436144828] [2020-08-21 17:13:48,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:48,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:13:48,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401542631] [2020-08-21 17:13:48,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:13:48,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:13:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:13:48,218 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-21 17:13:49,550 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:49,783 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:50,009 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:50,229 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:50,607 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-21 17:13:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:13:50,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-21 17:13:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:50,612 INFO L225 Difference]: With dead ends: 704 [2020-08-21 17:13:50,612 INFO L226 Difference]: Without dead ends: 411 [2020-08-21 17:13:50,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:13:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-21 17:13:50,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-21 17:13:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 17:13:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-21 17:13:50,702 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-21 17:13:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:50,704 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-21 17:13:50,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:13:50,704 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-21 17:13:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 17:13:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:50,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:50,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:13:50,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:50,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:50,709 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-21 17:13:50,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:50,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558871349] [2020-08-21 17:13:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,955 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:13:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:13:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:13:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 17:13:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 17:13:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 17:13:51,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558871349] [2020-08-21 17:13:51,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:51,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 17:13:51,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531153869] [2020-08-21 17:13:51,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 17:13:51,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 17:13:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:13:51,109 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-21 17:13:51,428 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:52,961 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:53,211 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:53,434 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:53,667 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:53,936 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:13:54,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:13:54,333 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-21 17:13:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:13:54,334 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-21 17:13:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:13:54,337 INFO L225 Difference]: With dead ends: 418 [2020-08-21 17:13:54,337 INFO L226 Difference]: Without dead ends: 415 [2020-08-21 17:13:54,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:13:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-21 17:13:54,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-21 17:13:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 17:13:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-21 17:13:54,415 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-21 17:13:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:13:54,416 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-21 17:13:54,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 17:13:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-21 17:13:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-21 17:13:54,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:13:54,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:13:54,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:13:54,419 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:13:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:13:54,420 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-21 17:13:54,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:13:54,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233767177] [2020-08-21 17:13:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:13:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,802 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:13:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:13:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:13:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:13:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:13:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:13:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:13:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:13:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:13:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:13:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:54,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 17:13:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 17:13:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:13:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:13:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:13:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 17:13:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 17:13:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:13:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 17:13:55,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233767177] [2020-08-21 17:13:55,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:13:55,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:13:55,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42719039] [2020-08-21 17:13:55,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:13:55,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:13:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:13:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:13:55,101 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-21 17:13:55,612 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:56,274 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:13:57,021 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:57,293 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:57,535 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:57,787 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:13:58,079 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:58,314 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:13:59,463 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:14:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:14:00,240 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-21 17:14:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 17:14:00,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-21 17:14:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:14:00,245 INFO L225 Difference]: With dead ends: 922 [2020-08-21 17:14:00,245 INFO L226 Difference]: Without dead ends: 624 [2020-08-21 17:14:00,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 17:14:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-21 17:14:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-21 17:14:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-21 17:14:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-21 17:14:00,342 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-21 17:14:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:14:00,343 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-21 17:14:00,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:14:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-21 17:14:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 17:14:00,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:14:00,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:14:00,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:14:00,347 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:14:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:14:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-21 17:14:00,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:14:00,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662152597] [2020-08-21 17:14:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:14:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,661 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:14:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:14:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:14:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:14:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:14:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:14:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:14:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:14:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:14:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:14:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 17:14:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 17:14:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-21 17:14:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 17:14:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 17:14:00,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662152597] [2020-08-21 17:14:00,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:14:00,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:14:00,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914303699] [2020-08-21 17:14:00,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:14:00,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:14:00,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:14:00,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:14:00,993 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-21 17:14:01,882 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:14:02,130 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:14:03,699 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 17:14:03,935 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:14:04,157 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:14:04,569 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-21 17:14:06,070 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-21 17:14:06,325 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 17:14:06,608 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:14:06,857 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:14:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:14:07,781 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-21 17:14:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 17:14:07,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-21 17:14:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:14:07,788 INFO L225 Difference]: With dead ends: 1442 [2020-08-21 17:14:07,788 INFO L226 Difference]: Without dead ends: 999 [2020-08-21 17:14:07,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 17:14:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-21 17:14:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-21 17:14:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-21 17:14:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-21 17:14:07,948 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-21 17:14:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:14:07,949 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-21 17:14:07,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:14:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-21 17:14:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-21 17:14:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:14:07,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:14:07,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:14:07,953 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:14:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:14:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-21 17:14:07,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:14:07,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324942910] [2020-08-21 17:14:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:14:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,273 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:14:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:14:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:14:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:14:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:14:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:14:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:14:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:14:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:14:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 17:14:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:14:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:14:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 17:14:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-21 17:14:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:14:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 17:14:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:14:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-21 17:14:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 17:14:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:14:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-21 17:14:08,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324942910] [2020-08-21 17:14:08,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:14:08,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:14:08,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729704559] [2020-08-21 17:14:08,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:14:08,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:14:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:14:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:14:08,606 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-21 17:14:09,153 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:09,389 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:09,610 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:10,930 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:14:11,158 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:14:11,408 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:14:11,630 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:14:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:14:11,919 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-21 17:14:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:14:11,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-21 17:14:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:14:11,921 INFO L225 Difference]: With dead ends: 1133 [2020-08-21 17:14:11,923 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:14:11,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 17:14:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:14:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:14:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:14:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:14:11,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-21 17:14:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:14:11,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:14:11,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:14:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:14:11,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:14:11,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:14:11,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:14:12,126 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-21 17:14:12,438 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-21 17:14:13,735 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2020-08-21 17:14:14,648 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2020-08-21 17:14:14,999 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 245 [2020-08-21 17:14:15,821 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 247 [2020-08-21 17:14:17,197 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 247