/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:50:28,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:50:28,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:50:28,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:50:28,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:50:28,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:50:28,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:50:28,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:50:28,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:50:28,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:50:28,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:50:28,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:50:28,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:50:28,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:50:28,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:50:28,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:50:28,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:50:28,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:50:28,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:50:28,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:50:28,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:50:28,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:50:28,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:50:28,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:50:28,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:50:28,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:50:28,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:50:28,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:50:28,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:50:28,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:50:28,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:50:28,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:50:28,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:50:28,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:50:28,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:50:28,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:50:28,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:50:28,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:50:28,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:50:28,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:50:28,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:50:28,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:50:28,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:50:28,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:50:28,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:50:28,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:50:28,799 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:50:28,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:50:28,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:50:28,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:50:28,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:50:28,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:50:28,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:50:28,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:50:28,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:50:28,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:50:28,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:50:28,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:50:28,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:50:28,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:50:28,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:50:28,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:50:28,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:50:28,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:50:28,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:50:28,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:50:28,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:50:28,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:50:28,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:50:28,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:50:28,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:50:28,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:50:29,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:50:29,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:50:29,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:50:29,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:50:29,138 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:50:29,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-22 02:50:29,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe7a3895/56afaa7816224bd4987b508af2aaaec8/FLAG305338b20 [2020-08-22 02:50:29,711 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:50:29,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product38.cil.c [2020-08-22 02:50:29,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe7a3895/56afaa7816224bd4987b508af2aaaec8/FLAG305338b20 [2020-08-22 02:50:30,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7fe7a3895/56afaa7816224bd4987b508af2aaaec8 [2020-08-22 02:50:30,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:50:30,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:50:30,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:50:30,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:50:30,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:50:30,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e065585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30, skipping insertion in model container [2020-08-22 02:50:30,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:50:30,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:50:30,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:50:30,547 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:50:30,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:50:30,658 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:50:30,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30 WrapperNode [2020-08-22 02:50:30,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:50:30,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:50:30,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:50:30,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:50:30,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... [2020-08-22 02:50:30,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:50:30,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:50:30,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:50:30,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:50:30,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:50:30,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:50:30,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:50:30,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:50:30,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:50:30,821 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:50:30,822 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:50:30,823 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:50:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:50:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:50:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:50:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:50:30,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:50:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:50:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:50:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:50:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:50:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:50:30,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:50:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:50:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:50:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:50:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:50:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:50:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:50:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:50:30,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:50:30,830 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:50:30,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:50:30,832 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:50:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:50:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:50:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:50:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:50:30,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:50:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:50:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:50:30,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:50:33,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:50:33,961 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:50:33,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:50:33 BoogieIcfgContainer [2020-08-22 02:50:33,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:50:33,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:50:33,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:50:33,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:50:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:50:30" (1/3) ... [2020-08-22 02:50:33,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3c110b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:50:33, skipping insertion in model container [2020-08-22 02:50:33,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:50:30" (2/3) ... [2020-08-22 02:50:33,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3c110b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:50:33, skipping insertion in model container [2020-08-22 02:50:33,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:50:33" (3/3) ... [2020-08-22 02:50:33,979 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2020-08-22 02:50:33,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:50:33,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:50:34,011 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:50:34,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:50:34,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:50:34,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:50:34,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:50:34,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:50:34,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:50:34,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:50:34,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:50:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-22 02:50:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:50:34,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:34,069 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] [2020-08-22 02:50:34,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:34,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1698741088, now seen corresponding path program 1 times [2020-08-22 02:50:34,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:34,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912458767] [2020-08-22 02:50:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,684 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:34,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:50:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:50:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:34,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912458767] [2020-08-22 02:50:34,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:34,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:50:34,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866788116] [2020-08-22 02:50:34,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:50:34,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:50:34,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:50:34,805 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-08-22 02:50:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:35,979 INFO L93 Difference]: Finished difference Result 296 states and 387 transitions. [2020-08-22 02:50:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:50:35,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 02:50:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:36,002 INFO L225 Difference]: With dead ends: 296 [2020-08-22 02:50:36,002 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 02:50:36,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:50:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 02:50:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-22 02:50:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 02:50:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-22 02:50:36,117 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 51 [2020-08-22 02:50:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:36,118 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-22 02:50:36,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:50:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-22 02:50:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:50:36,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:36,131 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] [2020-08-22 02:50:36,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:50:36,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash 160126664, now seen corresponding path program 1 times [2020-08-22 02:50:36,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:36,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880911665] [2020-08-22 02:50:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,568 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:36,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:50:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:50:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:36,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880911665] [2020-08-22 02:50:36,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:36,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:50:36,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401015114] [2020-08-22 02:50:36,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:50:36,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:36,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:50:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:50:36,623 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 5 states. [2020-08-22 02:50:37,084 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:37,878 INFO L93 Difference]: Finished difference Result 237 states and 294 transitions. [2020-08-22 02:50:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:50:37,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 02:50:37,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:37,883 INFO L225 Difference]: With dead ends: 237 [2020-08-22 02:50:37,883 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 02:50:37,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:50:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 02:50:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 02:50:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:50:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-22 02:50:37,923 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 52 [2020-08-22 02:50:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:37,923 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-22 02:50:37,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:50:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-22 02:50:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:50:37,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:37,925 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] [2020-08-22 02:50:37,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:50:37,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:37,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1051645430, now seen corresponding path program 1 times [2020-08-22 02:50:37,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:37,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212744778] [2020-08-22 02:50:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,245 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:50:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:50:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:38,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212744778] [2020-08-22 02:50:38,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:38,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:50:38,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140519932] [2020-08-22 02:50:38,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:50:38,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:38,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:50:38,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:50:38,409 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 9 states. [2020-08-22 02:50:38,836 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:39,144 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:39,418 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:39,645 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:40,842 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2020-08-22 02:50:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 02:50:40,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 02:50:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:40,845 INFO L225 Difference]: With dead ends: 250 [2020-08-22 02:50:40,845 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 02:50:40,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:50:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 02:50:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 02:50:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:50:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-22 02:50:40,895 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 57 [2020-08-22 02:50:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:40,897 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-22 02:50:40,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:50:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-22 02:50:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:50:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:40,902 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] [2020-08-22 02:50:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:50:40,902 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:40,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash 23828646, now seen corresponding path program 1 times [2020-08-22 02:50:40,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:40,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403872333] [2020-08-22 02:50:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,196 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:41,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:50:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:50:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:50:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:41,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403872333] [2020-08-22 02:50:41,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:41,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:50:41,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441961600] [2020-08-22 02:50:41,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:50:41,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:41,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:50:41,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:50:41,310 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2020-08-22 02:50:41,714 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:42,850 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:43,495 INFO L93 Difference]: Finished difference Result 349 states and 441 transitions. [2020-08-22 02:50:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:50:43,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-22 02:50:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:43,500 INFO L225 Difference]: With dead ends: 349 [2020-08-22 02:50:43,500 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 02:50:43,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:50:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 02:50:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-22 02:50:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 02:50:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2020-08-22 02:50:43,551 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 70 [2020-08-22 02:50:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:43,551 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2020-08-22 02:50:43,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:50:43,552 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2020-08-22 02:50:43,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:50:43,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:43,553 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, 1, 1, 1, 1, 1] [2020-08-22 02:50:43,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:50:43,554 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:43,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:43,554 INFO L82 PathProgramCache]: Analyzing trace with hash 765865706, now seen corresponding path program 1 times [2020-08-22 02:50:43,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:43,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165827290] [2020-08-22 02:50:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,823 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:50:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:50:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:50:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 02:50:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 02:50:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:43,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165827290] [2020-08-22 02:50:43,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:43,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:50:43,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373954335] [2020-08-22 02:50:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:50:43,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:50:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:50:43,995 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 9 states. [2020-08-22 02:50:44,434 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:45,580 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:45,836 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:46,071 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:46,288 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:47,391 INFO L93 Difference]: Finished difference Result 611 states and 771 transitions. [2020-08-22 02:50:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:50:47,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 02:50:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:47,396 INFO L225 Difference]: With dead ends: 611 [2020-08-22 02:50:47,396 INFO L226 Difference]: Without dead ends: 434 [2020-08-22 02:50:47,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:50:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-22 02:50:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 358. [2020-08-22 02:50:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-08-22 02:50:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2020-08-22 02:50:47,481 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 84 [2020-08-22 02:50:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:47,482 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2020-08-22 02:50:47,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:50:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2020-08-22 02:50:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:50:47,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:47,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:50:47,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:50:47,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:47,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1305842374, now seen corresponding path program 1 times [2020-08-22 02:50:47,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:47,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736007083] [2020-08-22 02:50:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,770 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:50:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:50:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:50:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:50:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 02:50:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 02:50:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:47,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736007083] [2020-08-22 02:50:47,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:47,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:50:47,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346596842] [2020-08-22 02:50:47,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:50:47,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:47,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:50:47,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:50:47,892 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand 10 states. [2020-08-22 02:50:48,373 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:49,498 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:49,715 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:50:49,950 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:50,246 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:51,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:51,288 INFO L93 Difference]: Finished difference Result 802 states and 995 transitions. [2020-08-22 02:50:51,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 02:50:51,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 02:50:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:51,293 INFO L225 Difference]: With dead ends: 802 [2020-08-22 02:50:51,293 INFO L226 Difference]: Without dead ends: 472 [2020-08-22 02:50:51,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:50:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-08-22 02:50:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 357. [2020-08-22 02:50:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-22 02:50:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-08-22 02:50:51,376 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 88 [2020-08-22 02:50:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:51,377 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-08-22 02:50:51,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:50:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-08-22 02:50:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:50:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:51,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:50:51,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:50:51,379 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash -638509814, now seen corresponding path program 1 times [2020-08-22 02:50:51,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:51,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766086210] [2020-08-22 02:50:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,629 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:50:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:50:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:50:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:50:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:50:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:50:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:51,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766086210] [2020-08-22 02:50:51,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:51,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:50:51,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750582741] [2020-08-22 02:50:51,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:50:51,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:51,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:50:51,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:50:51,778 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 10 states. [2020-08-22 02:50:52,836 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:53,070 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:50:53,303 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:53,543 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:54,415 INFO L93 Difference]: Finished difference Result 805 states and 1004 transitions. [2020-08-22 02:50:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:50:54,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 02:50:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:54,420 INFO L225 Difference]: With dead ends: 805 [2020-08-22 02:50:54,420 INFO L226 Difference]: Without dead ends: 476 [2020-08-22 02:50:54,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:50:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-22 02:50:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 367. [2020-08-22 02:50:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-22 02:50:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-22 02:50:54,519 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 89 [2020-08-22 02:50:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:54,519 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-22 02:50:54,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:50:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-22 02:50:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:50:54,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:54,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:50:54,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:50:54,522 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:54,523 INFO L82 PathProgramCache]: Analyzing trace with hash 63090060, now seen corresponding path program 1 times [2020-08-22 02:50:54,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:54,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858499061] [2020-08-22 02:50:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,824 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:50:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:50:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:50:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:50:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:50:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:50:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:54,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858499061] [2020-08-22 02:50:54,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:54,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:50:54,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153370040] [2020-08-22 02:50:54,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:50:54,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:54,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:50:54,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:50:54,974 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 12 states. [2020-08-22 02:50:56,332 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:50:56,563 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:56,788 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:57,458 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:57,702 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:57,936 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:50:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:50:58,903 INFO L93 Difference]: Finished difference Result 829 states and 1046 transitions. [2020-08-22 02:50:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:50:58,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-22 02:50:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:50:58,914 INFO L225 Difference]: With dead ends: 829 [2020-08-22 02:50:58,915 INFO L226 Difference]: Without dead ends: 490 [2020-08-22 02:50:58,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:50:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-22 02:50:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 375. [2020-08-22 02:50:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-08-22 02:50:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 425 transitions. [2020-08-22 02:50:58,974 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 425 transitions. Word has length 89 [2020-08-22 02:50:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:50:58,974 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 425 transitions. [2020-08-22 02:50:58,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:50:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 425 transitions. [2020-08-22 02:50:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 02:50:58,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:50:58,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:50:58,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:50:58,977 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:50:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:50:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1788570957, now seen corresponding path program 1 times [2020-08-22 02:50:58,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:50:58,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567242449] [2020-08-22 02:50:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:50:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,218 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:50:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:50:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:50:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:50:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:50:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:50:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:50:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:50:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:50:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:50:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:50:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:50:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:50:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:50:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:50:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:50:59,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567242449] [2020-08-22 02:50:59,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:50:59,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:50:59,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388734805] [2020-08-22 02:50:59,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:50:59,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:50:59,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:50:59,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:50:59,353 INFO L87 Difference]: Start difference. First operand 375 states and 425 transitions. Second operand 8 states. [2020-08-22 02:50:59,976 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:00,524 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:51:02,883 INFO L93 Difference]: Finished difference Result 1177 states and 1533 transitions. [2020-08-22 02:51:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 02:51:02,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-22 02:51:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:51:02,890 INFO L225 Difference]: With dead ends: 1177 [2020-08-22 02:51:02,890 INFO L226 Difference]: Without dead ends: 830 [2020-08-22 02:51:02,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 02:51:02,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-22 02:51:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 685. [2020-08-22 02:51:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-22 02:51:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 803 transitions. [2020-08-22 02:51:03,013 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 803 transitions. Word has length 89 [2020-08-22 02:51:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:51:03,013 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 803 transitions. [2020-08-22 02:51:03,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:51:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 803 transitions. [2020-08-22 02:51:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:51:03,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:51:03,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:51:03,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:51:03,016 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:51:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:51:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1370895219, now seen corresponding path program 1 times [2020-08-22 02:51:03,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:51:03,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943611368] [2020-08-22 02:51:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:51:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,260 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:51:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:51:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:51:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:51:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:51:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:51:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:51:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:51:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:51:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:51:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:51:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:51:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:51:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:51:03,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943611368] [2020-08-22 02:51:03,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:51:03,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:51:03,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224893865] [2020-08-22 02:51:03,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:51:03,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:51:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:51:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:51:03,365 INFO L87 Difference]: Start difference. First operand 685 states and 803 transitions. Second operand 8 states. [2020-08-22 02:51:03,882 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:51:06,833 INFO L93 Difference]: Finished difference Result 1357 states and 1763 transitions. [2020-08-22 02:51:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 02:51:06,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-22 02:51:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:51:06,842 INFO L225 Difference]: With dead ends: 1357 [2020-08-22 02:51:06,842 INFO L226 Difference]: Without dead ends: 1354 [2020-08-22 02:51:06,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 02:51:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-22 02:51:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1127. [2020-08-22 02:51:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-22 02:51:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1336 transitions. [2020-08-22 02:51:07,048 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1336 transitions. Word has length 93 [2020-08-22 02:51:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:51:07,048 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1336 transitions. [2020-08-22 02:51:07,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:51:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1336 transitions. [2020-08-22 02:51:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 02:51:07,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:51:07,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:51:07,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:51:07,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:51:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:51:07,054 INFO L82 PathProgramCache]: Analyzing trace with hash -669184687, now seen corresponding path program 1 times [2020-08-22 02:51:07,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:51:07,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385012047] [2020-08-22 02:51:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:51:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,349 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:51:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:51:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:51:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:51:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:51:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:51:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:51:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:51:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:51:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:51:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:51:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:51:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:51:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 02:51:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 02:51:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:51:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 02:51:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 02:51:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 02:51:07,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385012047] [2020-08-22 02:51:07,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:51:07,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 02:51:07,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494802781] [2020-08-22 02:51:07,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 02:51:07,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:51:07,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 02:51:07,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:51:07,712 INFO L87 Difference]: Start difference. First operand 1127 states and 1336 transitions. Second operand 19 states. [2020-08-22 02:51:08,406 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:08,733 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:51:08,998 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:51:09,236 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:51:09,921 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:11,042 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:11,400 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:12,726 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:12,972 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:13,240 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:13,513 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:13,752 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:14,000 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:14,284 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:14,522 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:51:15,477 INFO L93 Difference]: Finished difference Result 2141 states and 2612 transitions. [2020-08-22 02:51:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 02:51:15,478 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-22 02:51:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:51:15,487 INFO L225 Difference]: With dead ends: 2141 [2020-08-22 02:51:15,487 INFO L226 Difference]: Without dead ends: 1042 [2020-08-22 02:51:15,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 02:51:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-22 02:51:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 906. [2020-08-22 02:51:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-08-22 02:51:15,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1027 transitions. [2020-08-22 02:51:15,723 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1027 transitions. Word has length 152 [2020-08-22 02:51:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:51:15,726 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1027 transitions. [2020-08-22 02:51:15,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 02:51:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1027 transitions. [2020-08-22 02:51:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 02:51:15,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:51:15,732 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, 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] [2020-08-22 02:51:15,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:51:15,732 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:51:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:51:15,733 INFO L82 PathProgramCache]: Analyzing trace with hash 906656976, now seen corresponding path program 1 times [2020-08-22 02:51:15,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:51:15,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557246419] [2020-08-22 02:51:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:51:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,057 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:51:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:51:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:51:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:51:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:51:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:51:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:51:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:51:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:51:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:51:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:51:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:51:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:51:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 02:51:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:51:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:51:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:51:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 02:51:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 02:51:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:51:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-22 02:51:16,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557246419] [2020-08-22 02:51:16,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:51:16,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:51:16,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993144678] [2020-08-22 02:51:16,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:51:16,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:51:16,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:51:16,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:51:16,227 INFO L87 Difference]: Start difference. First operand 906 states and 1027 transitions. Second operand 13 states. [2020-08-22 02:51:16,808 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:51:17,040 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:51:17,264 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:51:18,248 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:51:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:51:19,504 INFO L93 Difference]: Finished difference Result 1616 states and 1930 transitions. [2020-08-22 02:51:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:51:19,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-22 02:51:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:51:19,505 INFO L225 Difference]: With dead ends: 1616 [2020-08-22 02:51:19,505 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:51:19,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 02:51:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:51:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:51:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:51:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:51:19,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2020-08-22 02:51:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:51:19,511 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:51:19,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:51:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:51:19,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:51:19,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:51:19,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:51:19,969 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 26 [2020-08-22 02:51:20,133 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-22 02:51:20,333 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-22 02:51:20,535 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26 [2020-08-22 02:51:20,741 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-22 02:51:20,946 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25 [2020-08-22 02:51:21,054 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 25 [2020-08-22 02:51:21,196 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-22 02:51:23,416 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-22 02:51:24,092 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 293 [2020-08-22 02:51:25,237 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 308 [2020-08-22 02:51:26,541 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 290 [2020-08-22 02:51:27,167 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 24 [2020-08-22 02:51:27,609 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 25