/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:28:34,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:28:34,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:28:34,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:28:34,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:28:34,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:28:34,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:28:34,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:28:34,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:28:34,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:28:34,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:28:34,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:28:34,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:28:34,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:28:34,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:28:34,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:28:34,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:28:34,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:28:34,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:28:34,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:28:34,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:28:34,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:28:34,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:28:34,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:28:34,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:28:34,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:28:34,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:28:34,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:28:34,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:28:34,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:28:34,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:28:34,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:28:34,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:28:34,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:28:34,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:28:34,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:28:34,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:28:34,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:28:34,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:28:34,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:28:34,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:28:34,826 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 00:28:34,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:28:34,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:28:34,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:28:34,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:28:34,873 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:28:34,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:28:34,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:28:34,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:28:34,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:28:34,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:28:34,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:28:34,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:28:34,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:28:34,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:28:34,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:28:34,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:28:34,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:28:34,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:28:34,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:28:34,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:28:34,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:28:34,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:28:34,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:28:34,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:28:34,880 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:28:35,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:28:35,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:28:35,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:28:35,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:28:35,207 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:28:35,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 00:28:35,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ceea6ee/ccd9dcfa44674e929bcc27a0ade1d71e/FLAG69e91dffd [2020-08-22 00:28:35,864 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:28:35,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-22 00:28:35,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ceea6ee/ccd9dcfa44674e929bcc27a0ade1d71e/FLAG69e91dffd [2020-08-22 00:28:36,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ceea6ee/ccd9dcfa44674e929bcc27a0ade1d71e [2020-08-22 00:28:36,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:28:36,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:28:36,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:36,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:28:36,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:28:36,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36, skipping insertion in model container [2020-08-22 00:28:36,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:28:36,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:28:36,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:36,652 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:28:36,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:28:36,777 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:28:36,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36 WrapperNode [2020-08-22 00:28:36,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:28:36,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:28:36,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:28:36,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:28:36,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (1/1) ... [2020-08-22 00:28:36,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:28:36,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:28:36,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:28:36,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:28:36,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (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 00:28:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:28:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:28:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:28:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:28:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:28:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:28:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:28:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:28:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:28:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:28:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:28:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:28:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:28:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:28:36,949 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:28:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:28:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:28:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:28:36,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:28:36,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:28:36,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:28:38,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:28:38,083 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:28:38,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:38 BoogieIcfgContainer [2020-08-22 00:28:38,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:28:38,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:28:38,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:28:38,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:28:38,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:28:36" (1/3) ... [2020-08-22 00:28:38,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e3d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:38, skipping insertion in model container [2020-08-22 00:28:38,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:28:36" (2/3) ... [2020-08-22 00:28:38,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7e3d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:28:38, skipping insertion in model container [2020-08-22 00:28:38,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:28:38" (3/3) ... [2020-08-22 00:28:38,097 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2020-08-22 00:28:38,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:28:38,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:28:38,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:28:38,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:28:38,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:28:38,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:28:38,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:28:38,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:28:38,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:28:38,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:28:38,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:28:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-22 00:28:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:28:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:38,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:38,182 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2007114508, now seen corresponding path program 1 times [2020-08-22 00:28:38,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:38,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967384863] [2020-08-22 00:28:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,842 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:28:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:28:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:38,970 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 00:28:38,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967384863] [2020-08-22 00:28:38,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:38,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:28:38,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087384667] [2020-08-22 00:28:38,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:28:38,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:38,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:28:38,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:39,001 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-22 00:28:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:40,306 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-22 00:28:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:28:40,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 00:28:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:40,325 INFO L225 Difference]: With dead ends: 323 [2020-08-22 00:28:40,325 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 00:28:40,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:28:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 00:28:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-08-22 00:28:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 00:28:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-22 00:28:40,444 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 46 [2020-08-22 00:28:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:40,444 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-22 00:28:40,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:28:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-22 00:28:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 00:28:40,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:40,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:40,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:28:40,449 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:40,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:40,449 INFO L82 PathProgramCache]: Analyzing trace with hash 622418136, now seen corresponding path program 1 times [2020-08-22 00:28:40,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:40,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308676609] [2020-08-22 00:28:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,772 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:28:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:40,859 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 00:28:40,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308676609] [2020-08-22 00:28:40,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:40,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:28:40,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509643087] [2020-08-22 00:28:40,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:28:40,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:28:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:28:40,864 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-22 00:28:41,320 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:42,238 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-22 00:28:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:28:42,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 00:28:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:42,260 INFO L225 Difference]: With dead ends: 250 [2020-08-22 00:28:42,260 INFO L226 Difference]: Without dead ends: 159 [2020-08-22 00:28:42,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:28:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-22 00:28:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 130. [2020-08-22 00:28:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 00:28:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-22 00:28:42,303 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 47 [2020-08-22 00:28:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:42,303 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-22 00:28:42,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:28:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-22 00:28:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 00:28:42,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:42,306 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 00:28:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:28:42,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash -943300313, now seen corresponding path program 1 times [2020-08-22 00:28:42,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:42,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323628917] [2020-08-22 00:28:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,670 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:28:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:42,793 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 00:28:42,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323628917] [2020-08-22 00:28:42,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:42,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:28:42,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396506984] [2020-08-22 00:28:42,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:28:42,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:42,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:28:42,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:28:42,801 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-22 00:28:43,148 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:43,494 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:43,744 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:43,974 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:44,673 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:46,572 INFO L93 Difference]: Finished difference Result 446 states and 552 transitions. [2020-08-22 00:28:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:28:46,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 00:28:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:46,578 INFO L225 Difference]: With dead ends: 446 [2020-08-22 00:28:46,578 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 00:28:46,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:28:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 00:28:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2020-08-22 00:28:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-08-22 00:28:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2020-08-22 00:28:46,656 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 51 [2020-08-22 00:28:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:46,656 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2020-08-22 00:28:46,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:28:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2020-08-22 00:28:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:28:46,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:46,660 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 00:28:46,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:28:46,660 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1373874698, now seen corresponding path program 1 times [2020-08-22 00:28:46,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:46,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193294727] [2020-08-22 00:28:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:46,963 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:46,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:28:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:28:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:47,071 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 00:28:47,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193294727] [2020-08-22 00:28:47,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:47,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:28:47,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169926619] [2020-08-22 00:28:47,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:28:47,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:47,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:28:47,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:28:47,073 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 12 states. [2020-08-22 00:28:47,500 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:47,829 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:48,074 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:48,312 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:48,873 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:28:49,636 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:50,001 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:50,345 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:50,691 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:50,937 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:28:51,369 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:51,694 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:28:51,964 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:28:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:53,856 INFO L93 Difference]: Finished difference Result 1133 states and 1552 transitions. [2020-08-22 00:28:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:28:53,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 00:28:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:53,874 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 00:28:53,875 INFO L226 Difference]: Without dead ends: 879 [2020-08-22 00:28:53,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 00:28:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-22 00:28:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 782. [2020-08-22 00:28:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-08-22 00:28:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 994 transitions. [2020-08-22 00:28:54,069 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 994 transitions. Word has length 57 [2020-08-22 00:28:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:54,069 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 994 transitions. [2020-08-22 00:28:54,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:28:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 994 transitions. [2020-08-22 00:28:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 00:28:54,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:54,074 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] [2020-08-22 00:28:54,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:28:54,075 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:54,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1561170436, now seen corresponding path program 1 times [2020-08-22 00:28:54,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:54,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029666294] [2020-08-22 00:28:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,333 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:28:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:28:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:28:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:28:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:54,420 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 00:28:54,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029666294] [2020-08-22 00:28:54,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:28:54,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:28:54,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058618115] [2020-08-22 00:28:54,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:28:54,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:54,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:28:54,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:28:54,422 INFO L87 Difference]: Start difference. First operand 782 states and 994 transitions. Second operand 6 states. [2020-08-22 00:28:54,710 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:28:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:28:56,608 INFO L93 Difference]: Finished difference Result 1911 states and 2577 transitions. [2020-08-22 00:28:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:28:56,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 00:28:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:28:56,617 INFO L225 Difference]: With dead ends: 1911 [2020-08-22 00:28:56,617 INFO L226 Difference]: Without dead ends: 1153 [2020-08-22 00:28:56,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:28:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-08-22 00:28:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1066. [2020-08-22 00:28:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-22 00:28:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1328 transitions. [2020-08-22 00:28:56,921 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1328 transitions. Word has length 61 [2020-08-22 00:28:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:28:56,922 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1328 transitions. [2020-08-22 00:28:56,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:28:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1328 transitions. [2020-08-22 00:28:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 00:28:56,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:28:56,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:28:56,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:28:56,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:28:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:28:56,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1580345337, now seen corresponding path program 1 times [2020-08-22 00:28:56,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:28:56,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560286369] [2020-08-22 00:28:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:28:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,348 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:28:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:28:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:28:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:28:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:28:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:28:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:28:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:28:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:28:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:28:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:28:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:28:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 00:28:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 00:28:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:28:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 00:28:57,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560286369] [2020-08-22 00:28:57,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:28:57,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:28:57,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281205593] [2020-08-22 00:28:57,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:28:57,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:28:57,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:28:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:28:57,512 INFO L87 Difference]: Start difference. First operand 1066 states and 1328 transitions. Second operand 10 states. [2020-08-22 00:28:58,128 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 00:28:58,695 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:00,600 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:02,257 INFO L93 Difference]: Finished difference Result 2035 states and 2637 transitions. [2020-08-22 00:29:02,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:29:02,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 00:29:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:02,269 INFO L225 Difference]: With dead ends: 2035 [2020-08-22 00:29:02,269 INFO L226 Difference]: Without dead ends: 1270 [2020-08-22 00:29:02,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 00:29:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-08-22 00:29:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2020-08-22 00:29:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-08-22 00:29:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1439 transitions. [2020-08-22 00:29:02,505 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1439 transitions. Word has length 88 [2020-08-22 00:29:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:02,508 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1439 transitions. [2020-08-22 00:29:02,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1439 transitions. [2020-08-22 00:29:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 00:29:02,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:02,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:02,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:29:02,515 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1992976932, now seen corresponding path program 1 times [2020-08-22 00:29:02,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:02,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305458878] [2020-08-22 00:29:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,796 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 00:29:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 00:29:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 00:29:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 00:29:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 00:29:02,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305458878] [2020-08-22 00:29:02,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:02,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:29:02,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022207083] [2020-08-22 00:29:03,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:29:03,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:03,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:29:03,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:29:03,001 INFO L87 Difference]: Start difference. First operand 1173 states and 1439 transitions. Second operand 10 states. [2020-08-22 00:29:03,922 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:04,189 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:04,449 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:04,686 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:05,627 INFO L93 Difference]: Finished difference Result 2475 states and 3246 transitions. [2020-08-22 00:29:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:29:05,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-22 00:29:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:05,638 INFO L225 Difference]: With dead ends: 2475 [2020-08-22 00:29:05,638 INFO L226 Difference]: Without dead ends: 1326 [2020-08-22 00:29:05,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:29:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-08-22 00:29:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1203. [2020-08-22 00:29:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-08-22 00:29:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1473 transitions. [2020-08-22 00:29:05,933 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1473 transitions. Word has length 141 [2020-08-22 00:29:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:05,933 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1473 transitions. [2020-08-22 00:29:05,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:29:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1473 transitions. [2020-08-22 00:29:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 00:29:05,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:05,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:05,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:29:05,939 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1964476642, now seen corresponding path program 1 times [2020-08-22 00:29:05,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:05,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454986731] [2020-08-22 00:29:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,235 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 00:29:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 00:29:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 00:29:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 00:29:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 00:29:06,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454986731] [2020-08-22 00:29:06,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:06,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:29:06,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938312111] [2020-08-22 00:29:06,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:06,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:06,457 INFO L87 Difference]: Start difference. First operand 1203 states and 1473 transitions. Second operand 12 states. [2020-08-22 00:29:06,986 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:07,208 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:07,432 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:08,069 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:08,345 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:08,588 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:09,715 INFO L93 Difference]: Finished difference Result 2205 states and 2787 transitions. [2020-08-22 00:29:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:29:09,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-22 00:29:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:09,722 INFO L225 Difference]: With dead ends: 2205 [2020-08-22 00:29:09,722 INFO L226 Difference]: Without dead ends: 1026 [2020-08-22 00:29:09,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:29:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-08-22 00:29:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 970. [2020-08-22 00:29:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-22 00:29:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1172 transitions. [2020-08-22 00:29:09,932 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1172 transitions. Word has length 141 [2020-08-22 00:29:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:09,932 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1172 transitions. [2020-08-22 00:29:09,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:29:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1172 transitions. [2020-08-22 00:29:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 00:29:09,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:09,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:09,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:29:09,937 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash -872576729, now seen corresponding path program 1 times [2020-08-22 00:29:09,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:09,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064276694] [2020-08-22 00:29:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,199 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 00:29:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 00:29:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 00:29:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:29:10,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064276694] [2020-08-22 00:29:10,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:10,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:29:10,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274176479] [2020-08-22 00:29:10,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:29:10,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:29:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:29:10,510 INFO L87 Difference]: Start difference. First operand 970 states and 1172 transitions. Second operand 13 states. [2020-08-22 00:29:11,157 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:11,965 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:13,359 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:13,679 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:13,921 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:14,147 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:14,461 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:14,746 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:15,721 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:15,969 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:16,235 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:16,464 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:17,211 INFO L93 Difference]: Finished difference Result 2803 states and 3512 transitions. [2020-08-22 00:29:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:29:17,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-08-22 00:29:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:17,222 INFO L225 Difference]: With dead ends: 2803 [2020-08-22 00:29:17,222 INFO L226 Difference]: Without dead ends: 1857 [2020-08-22 00:29:17,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 00:29:17,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-08-22 00:29:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1755. [2020-08-22 00:29:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-08-22 00:29:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2091 transitions. [2020-08-22 00:29:17,536 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2091 transitions. Word has length 145 [2020-08-22 00:29:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:17,537 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2091 transitions. [2020-08-22 00:29:17,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:29:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2091 transitions. [2020-08-22 00:29:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:29:17,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:17,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:17,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:29:17,544 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:17,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1489780363, now seen corresponding path program 1 times [2020-08-22 00:29:17,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:17,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459106005] [2020-08-22 00:29:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,815 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:29:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:29:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 00:29:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 00:29:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:29:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:29:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 00:29:18,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459106005] [2020-08-22 00:29:18,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:18,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 00:29:18,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140538873] [2020-08-22 00:29:18,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 00:29:18,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:18,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 00:29:18,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:29:18,286 INFO L87 Difference]: Start difference. First operand 1755 states and 2091 transitions. Second operand 18 states. [2020-08-22 00:29:18,771 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:19,091 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:19,388 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:19,626 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:20,236 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:21,873 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:22,309 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:22,596 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:22,861 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:23,232 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:23,502 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:24,040 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 00:29:24,543 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-22 00:29:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:26,223 INFO L93 Difference]: Finished difference Result 3380 states and 4249 transitions. [2020-08-22 00:29:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 00:29:26,224 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2020-08-22 00:29:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:26,237 INFO L225 Difference]: With dead ends: 3380 [2020-08-22 00:29:26,237 INFO L226 Difference]: Without dead ends: 1959 [2020-08-22 00:29:26,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 00:29:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-08-22 00:29:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1677. [2020-08-22 00:29:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 00:29:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1989 transitions. [2020-08-22 00:29:26,576 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1989 transitions. Word has length 149 [2020-08-22 00:29:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:26,577 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1989 transitions. [2020-08-22 00:29:26,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 00:29:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1989 transitions. [2020-08-22 00:29:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:29:26,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:26,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:26,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:29:26,582 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash -913393781, now seen corresponding path program 2 times [2020-08-22 00:29:26,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:26,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821814965] [2020-08-22 00:29:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,865 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 00:29:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 00:29:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 00:29:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:29:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:29:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 00:29:27,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821814965] [2020-08-22 00:29:27,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:27,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:29:27,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64867463] [2020-08-22 00:29:27,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:29:27,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:27,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:29:27,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:29:27,022 INFO L87 Difference]: Start difference. First operand 1677 states and 1989 transitions. Second operand 11 states. [2020-08-22 00:29:27,810 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:29,848 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:30,090 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:29:30,351 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:30,685 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:29:30,923 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:29:31,475 INFO L93 Difference]: Finished difference Result 1987 states and 2521 transitions. [2020-08-22 00:29:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 00:29:31,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-22 00:29:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:29:31,485 INFO L225 Difference]: With dead ends: 1987 [2020-08-22 00:29:31,486 INFO L226 Difference]: Without dead ends: 1984 [2020-08-22 00:29:31,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 00:29:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-08-22 00:29:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1677. [2020-08-22 00:29:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-22 00:29:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1979 transitions. [2020-08-22 00:29:31,795 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1979 transitions. Word has length 149 [2020-08-22 00:29:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:29:31,796 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1979 transitions. [2020-08-22 00:29:31,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:29:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1979 transitions. [2020-08-22 00:29:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:29:31,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:29:31,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:31,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:29:31,802 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:29:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:29:31,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425787, now seen corresponding path program 1 times [2020-08-22 00:29:31,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:29:31,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898739990] [2020-08-22 00:29:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:29:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,101 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:29:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:29:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:29:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:29:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:29:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 00:29:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:29:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:29:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:29:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:29:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:29:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 00:29:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:29:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:29:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:29:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:29:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:29:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:29:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 00:29:32,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898739990] [2020-08-22 00:29:32,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:29:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 00:29:32,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67777807] [2020-08-22 00:29:32,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:29:32,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:29:32,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:29:32,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:29:32,330 INFO L87 Difference]: Start difference. First operand 1677 states and 1979 transitions. Second operand 12 states. [2020-08-22 00:29:32,678 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:29:33,580 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:29:33,865 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:29:34,116 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190