/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=SMALLEST --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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:36:49,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:36:49,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:36:49,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:36:49,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:36:49,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:36:49,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:36:49,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:36:49,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:36:49,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:36:49,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:36:49,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:36:49,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:36:49,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:36:49,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:36:49,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:36:49,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:36:49,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:36:49,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:36:49,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:36:49,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:36:49,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:36:49,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:36:49,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:36:49,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:36:49,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:36:49,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:36:49,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:36:49,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:36:49,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:36:49,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:36:49,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:36:49,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:36:49,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:36:49,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:36:49,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:36:49,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:36:49,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:36:49,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:36:49,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:36:49,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:36:49,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:36:49,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:36:49,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:36:49,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:36:49,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:36:49,916 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:36:49,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:36:49,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:36:49,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:36:49,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:36:49,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:36:49,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:36:49,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:36:49,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:36:49,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:36:49,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:36:49,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:36:49,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:36:49,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:36:49,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:36:49,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:36:49,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:36:49,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:49,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:36:49,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:36:49,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:36:49,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:36:49,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:36:49,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:36:49,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:36:49,922 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:36:50,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:36:50,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:36:50,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:36:50,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:36:50,250 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:36:50,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 15:36:50,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d3987d7/d4199aee2974477fb7214ec4fdfcacf4/FLAG0efd6de5e [2020-08-21 15:36:50,812 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:36:50,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2020-08-21 15:36:50,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d3987d7/d4199aee2974477fb7214ec4fdfcacf4/FLAG0efd6de5e [2020-08-21 15:36:51,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3d3987d7/d4199aee2974477fb7214ec4fdfcacf4 [2020-08-21 15:36:51,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:36:51,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:36:51,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:51,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:36:51,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:36:51,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627c2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51, skipping insertion in model container [2020-08-21 15:36:51,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:36:51,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:36:51,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:51,446 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:36:51,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:51,668 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:36:51,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51 WrapperNode [2020-08-21 15:36:51,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:51,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:36:51,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:36:51,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:36:51,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... [2020-08-21 15:36:51,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:36:51,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:36:51,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:36:51,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:36:51,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:36:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:36:51,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:36:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:36:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:36:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:36:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:36:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:36:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:36:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:36:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:36:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:36:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:36:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:36:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:36:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:36:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:36:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:36:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:36:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:36:52,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:36:52,844 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:36:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:52 BoogieIcfgContainer [2020-08-21 15:36:52,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:36:52,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:36:52,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:36:52,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:36:52,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:36:51" (1/3) ... [2020-08-21 15:36:52,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b9c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:52, skipping insertion in model container [2020-08-21 15:36:52,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:51" (2/3) ... [2020-08-21 15:36:52,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b9c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:52, skipping insertion in model container [2020-08-21 15:36:52,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:52" (3/3) ... [2020-08-21 15:36:52,857 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2020-08-21 15:36:52,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:36:52,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:36:52,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:36:52,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:36:52,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:36:52,918 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:36:52,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:36:52,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:36:52,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:36:52,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:36:52,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:36:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-21 15:36:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:36:52,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:52,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:52,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:52,966 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2020-08-21 15:36:52,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:52,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276471063] [2020-08-21 15:36:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,679 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:53,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276471063] [2020-08-21 15:36:53,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:53,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:36:53,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473891268] [2020-08-21 15:36:53,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:36:53,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:53,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:36:53,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:53,798 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2020-08-21 15:36:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:55,316 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2020-08-21 15:36:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:36:55,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:36:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:55,334 INFO L225 Difference]: With dead ends: 360 [2020-08-21 15:36:55,334 INFO L226 Difference]: Without dead ends: 194 [2020-08-21 15:36:55,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-21 15:36:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2020-08-21 15:36:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 15:36:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2020-08-21 15:36:55,481 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2020-08-21 15:36:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:55,482 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2020-08-21 15:36:55,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:36:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2020-08-21 15:36:55,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:36:55,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:55,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:55,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:36:55,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:55,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2020-08-21 15:36:55,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:55,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120507604] [2020-08-21 15:36:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,865 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:36:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:55,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120507604] [2020-08-21 15:36:55,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:55,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:36:55,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493219747] [2020-08-21 15:36:55,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:36:55,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:36:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:36:55,919 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2020-08-21 15:36:56,358 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:57,367 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2020-08-21 15:36:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:36:57,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:36:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:57,375 INFO L225 Difference]: With dead ends: 289 [2020-08-21 15:36:57,377 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 15:36:57,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:36:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 15:36:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 15:36:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 15:36:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2020-08-21 15:36:57,437 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2020-08-21 15:36:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:57,438 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2020-08-21 15:36:57,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:36:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2020-08-21 15:36:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:36:57,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:57,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:57,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:36:57,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2020-08-21 15:36:57,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:57,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717361632] [2020-08-21 15:36:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,829 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:36:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:57,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717361632] [2020-08-21 15:36:57,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:57,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:36:57,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385880030] [2020-08-21 15:36:57,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:36:57,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:57,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:36:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:36:57,936 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2020-08-21 15:36:58,339 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:58,631 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:58,886 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:59,120 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:00,496 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2020-08-21 15:37:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:37:00,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 15:37:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:00,500 INFO L225 Difference]: With dead ends: 302 [2020-08-21 15:37:00,500 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 15:37:00,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 15:37:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2020-08-21 15:37:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 15:37:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-08-21 15:37:00,545 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2020-08-21 15:37:00,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:00,545 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-08-21 15:37:00,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:37:00,545 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-08-21 15:37:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 15:37:00,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:00,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:00,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:37:00,548 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2020-08-21 15:37:00,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:00,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928462828] [2020-08-21 15:37:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,830 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:37:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:37:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 15:37:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:37:00,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928462828] [2020-08-21 15:37:00,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:37:00,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:37:00,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480372444] [2020-08-21 15:37:00,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:37:00,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:00,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:37:00,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:37:00,970 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2020-08-21 15:37:01,307 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:02,531 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:03,274 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2020-08-21 15:37:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:37:03,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 15:37:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:03,278 INFO L225 Difference]: With dead ends: 413 [2020-08-21 15:37:03,278 INFO L226 Difference]: Without dead ends: 289 [2020-08-21 15:37:03,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:37:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-08-21 15:37:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-08-21 15:37:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-21 15:37:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2020-08-21 15:37:03,347 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2020-08-21 15:37:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:03,348 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2020-08-21 15:37:03,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:37:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2020-08-21 15:37:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 15:37:03,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:03,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:03,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:37:03,350 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:03,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:03,350 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2020-08-21 15:37:03,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:03,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553743816] [2020-08-21 15:37:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,660 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:37:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:37:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 15:37:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:37:03,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553743816] [2020-08-21 15:37:03,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:37:03,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:37:03,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922245627] [2020-08-21 15:37:03,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:03,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:03,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:03,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:03,775 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2020-08-21 15:37:04,283 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:04,598 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:04,884 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:05,116 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:05,654 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:06,686 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:07,016 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:07,283 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:07,554 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:07,864 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:08,132 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:09,608 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:09,956 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:10,837 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2020-08-21 15:37:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 15:37:10,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 15:37:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:10,848 INFO L225 Difference]: With dead ends: 866 [2020-08-21 15:37:10,849 INFO L226 Difference]: Without dead ends: 644 [2020-08-21 15:37:10,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 15:37:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-08-21 15:37:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2020-08-21 15:37:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-08-21 15:37:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2020-08-21 15:37:10,982 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2020-08-21 15:37:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:10,983 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2020-08-21 15:37:10,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2020-08-21 15:37:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 15:37:10,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:10,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:10,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:37:10,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:10,988 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2020-08-21 15:37:10,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:10,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477040841] [2020-08-21 15:37:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,296 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 15:37:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 15:37:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 15:37:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 15:37:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 15:37:11,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477040841] [2020-08-21 15:37:11,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:11,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:37:11,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986017356] [2020-08-21 15:37:11,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:37:11,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:11,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:37:11,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:37:11,555 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 13 states. [2020-08-21 15:37:12,094 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:12,717 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:13,307 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:13,577 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:37:13,851 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:14,097 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:14,330 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:14,605 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 15:37:14,896 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:15,155 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:17,135 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:17,387 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:37:17,637 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:17,890 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:18,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:18,562 INFO L93 Difference]: Finished difference Result 1164 states and 1458 transitions. [2020-08-21 15:37:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 15:37:18,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-08-21 15:37:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:18,574 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 15:37:18,574 INFO L226 Difference]: Without dead ends: 606 [2020-08-21 15:37:18,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 15:37:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-08-21 15:37:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 533. [2020-08-21 15:37:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-08-21 15:37:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 619 transitions. [2020-08-21 15:37:18,676 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 619 transitions. Word has length 156 [2020-08-21 15:37:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:18,676 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 619 transitions. [2020-08-21 15:37:18,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:37:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 619 transitions. [2020-08-21 15:37:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 15:37:18,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:18,680 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] [2020-08-21 15:37:18,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:37:18,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2020-08-21 15:37:18,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:18,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453679455] [2020-08-21 15:37:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,001 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:37:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:37:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 15:37:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 15:37:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 15:37:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 15:37:19,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453679455] [2020-08-21 15:37:19,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:19,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:19,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495269215] [2020-08-21 15:37:19,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:19,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:19,252 INFO L87 Difference]: Start difference. First operand 533 states and 619 transitions. Second operand 12 states. [2020-08-21 15:37:19,812 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:20,048 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:20,261 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:20,863 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:21,109 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:21,322 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:22,668 INFO L93 Difference]: Finished difference Result 951 states and 1145 transitions. [2020-08-21 15:37:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:37:22,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 148 [2020-08-21 15:37:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:22,672 INFO L225 Difference]: With dead ends: 951 [2020-08-21 15:37:22,672 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 15:37:22,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:37:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 15:37:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2020-08-21 15:37:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 15:37:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 483 transitions. [2020-08-21 15:37:22,769 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 483 transitions. Word has length 148 [2020-08-21 15:37:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:22,769 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 483 transitions. [2020-08-21 15:37:22,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 483 transitions. [2020-08-21 15:37:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 15:37:22,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:22,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:22,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:37:22,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2020-08-21 15:37:22,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:22,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325828325] [2020-08-21 15:37:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,074 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:23,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:37:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:37:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-21 15:37:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 15:37:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-21 15:37:23,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325828325] [2020-08-21 15:37:23,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:23,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:37:23,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183857362] [2020-08-21 15:37:23,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:37:23,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:23,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:37:23,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:37:23,328 INFO L87 Difference]: Start difference. First operand 416 states and 483 transitions. Second operand 13 states. [2020-08-21 15:37:23,819 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:24,522 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:25,521 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:25,839 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:26,124 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:26,364 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:26,660 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:26,916 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:28,053 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:28,263 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:28,517 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:28,758 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:29,549 INFO L93 Difference]: Finished difference Result 1172 states and 1412 transitions. [2020-08-21 15:37:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 15:37:29,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 15:37:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:29,561 INFO L225 Difference]: With dead ends: 1172 [2020-08-21 15:37:29,561 INFO L226 Difference]: Without dead ends: 780 [2020-08-21 15:37:29,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 15:37:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-21 15:37:29,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 738. [2020-08-21 15:37:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-08-21 15:37:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 848 transitions. [2020-08-21 15:37:29,754 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 848 transitions. Word has length 152 [2020-08-21 15:37:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:29,755 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 848 transitions. [2020-08-21 15:37:29,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:37:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 848 transitions. [2020-08-21 15:37:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 15:37:29,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:29,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:29,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:37:29,758 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:29,759 INFO L82 PathProgramCache]: Analyzing trace with hash -508382690, now seen corresponding path program 1 times [2020-08-21 15:37:29,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:29,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915544410] [2020-08-21 15:37:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,024 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:37:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:37:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 15:37:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 15:37:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 15:37:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 15:37:30,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915544410] [2020-08-21 15:37:30,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:30,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 15:37:30,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730511153] [2020-08-21 15:37:30,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 15:37:30,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:30,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 15:37:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:37:30,537 INFO L87 Difference]: Start difference. First operand 738 states and 848 transitions. Second operand 18 states. [2020-08-21 15:37:31,983 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:32,304 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:32,552 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:32,785 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:33,433 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:34,543 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:34,865 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:35,143 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:35,423 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:35,790 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:36,084 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:36,667 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:37:37,190 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 15:37:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:39,215 INFO L93 Difference]: Finished difference Result 1398 states and 1701 transitions. [2020-08-21 15:37:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 15:37:39,216 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2020-08-21 15:37:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:39,222 INFO L225 Difference]: With dead ends: 1398 [2020-08-21 15:37:39,222 INFO L226 Difference]: Without dead ends: 820 [2020-08-21 15:37:39,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 15:37:39,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-08-21 15:37:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 700. [2020-08-21 15:37:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 15:37:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 801 transitions. [2020-08-21 15:37:39,369 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 801 transitions. Word has length 156 [2020-08-21 15:37:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:39,370 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 801 transitions. [2020-08-21 15:37:39,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 15:37:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 801 transitions. [2020-08-21 15:37:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-21 15:37:39,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:39,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:39,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:37:39,375 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash -620136546, now seen corresponding path program 2 times [2020-08-21 15:37:39,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:39,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926539154] [2020-08-21 15:37:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,683 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 15:37:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 15:37:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 15:37:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 15:37:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 15:37:39,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926539154] [2020-08-21 15:37:39,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:39,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:37:39,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452148029] [2020-08-21 15:37:39,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:37:39,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:37:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:37:39,860 INFO L87 Difference]: Start difference. First operand 700 states and 801 transitions. Second operand 11 states. [2020-08-21 15:37:40,643 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:42,951 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:43,214 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:43,481 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:43,875 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:44,199 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:44,579 INFO L93 Difference]: Finished difference Result 826 states and 1019 transitions. [2020-08-21 15:37:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 15:37:44,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 156 [2020-08-21 15:37:44,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:44,585 INFO L225 Difference]: With dead ends: 826 [2020-08-21 15:37:44,585 INFO L226 Difference]: Without dead ends: 823 [2020-08-21 15:37:44,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:37:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-08-21 15:37:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 700. [2020-08-21 15:37:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-08-21 15:37:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 799 transitions. [2020-08-21 15:37:44,716 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 799 transitions. Word has length 156 [2020-08-21 15:37:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:44,716 INFO L479 AbstractCegarLoop]: Abstraction has 700 states and 799 transitions. [2020-08-21 15:37:44,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:37:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 799 transitions. [2020-08-21 15:37:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-21 15:37:44,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:44,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:44,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:37:44,720 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash 350169461, now seen corresponding path program 1 times [2020-08-21 15:37:44,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:44,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248228853] [2020-08-21 15:37:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,030 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:37:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:37:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:37:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:37:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 15:37:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 15:37:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 15:37:45,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248228853] [2020-08-21 15:37:45,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:45,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:45,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622945854] [2020-08-21 15:37:45,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:45,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:45,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:45,313 INFO L87 Difference]: Start difference. First operand 700 states and 799 transitions. Second operand 12 states. [2020-08-21 15:37:45,943 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:47,079 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:47,665 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:47,951 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190