/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:58:25,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:58:25,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:58:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:58:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:58:25,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:58:25,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:58:25,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:58:25,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:58:25,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:58:25,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:58:25,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:58:25,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:58:25,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:58:25,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:58:25,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:58:25,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:58:25,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:58:25,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:58:25,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:58:25,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:58:25,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:58:25,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:58:25,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:58:25,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:58:25,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:58:25,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:58:25,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:58:25,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:58:25,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:58:25,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:58:25,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:58:25,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:58:25,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:58:25,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:58:25,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:58:25,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:58:25,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:58:25,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:58:25,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:58:25,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:58:25,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:58:25,905 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:58:25,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:58:25,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:58:25,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:58:25,907 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:58:25,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:58:25,907 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:58:25,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:58:25,909 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:58:25,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:58:25,909 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:58:25,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:58:25,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:58:25,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:58:25,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:58:25,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:58:25,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:25,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:58:25,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:58:25,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:58:25,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:58:25,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:58:25,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:58:25,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:58:26,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:58:26,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:58:26,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:58:26,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:58:26,218 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:58:26,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-11-06 21:58:26,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1071782da/4725f2791e75482fac7ce1d5389c96a0/FLAG9bc37dfc4 [2019-11-06 21:58:26,836 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:58:26,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-11-06 21:58:26,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1071782da/4725f2791e75482fac7ce1d5389c96a0/FLAG9bc37dfc4 [2019-11-06 21:58:27,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1071782da/4725f2791e75482fac7ce1d5389c96a0 [2019-11-06 21:58:27,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:58:27,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:58:27,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:27,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:58:27,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:58:27,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27, skipping insertion in model container [2019-11-06 21:58:27,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,152 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:58:27,222 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:58:27,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:27,682 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:58:27,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:27,820 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:58:27,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27 WrapperNode [2019-11-06 21:58:27,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:27,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:58:27,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:58:27,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:58:27,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... [2019-11-06 21:58:27,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:58:27,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:58:27,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:58:27,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:58:27,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 21:58:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:58:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:58:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:58:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:58:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:58:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:58:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:58:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:58:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:58:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:58:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:58:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:58:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:58:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:58:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:58:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:58:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:58:28,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:58:28,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:58:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:58:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:58:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:58:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:58:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:58:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:58:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:58:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:58:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:58:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:58:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:58:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:58:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:58:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:58:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:58:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:58:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:58:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:58:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:58:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:58:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:58:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:58:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:58:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:58:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:58:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:58:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:58:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:58:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:58:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:58:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:58:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:58:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:58:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:58:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:58:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:58:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:58:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:58:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:58:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:58:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:58:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:58:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:58:29,229 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:58:29,229 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:58:29,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:29 BoogieIcfgContainer [2019-11-06 21:58:29,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:58:29,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:58:29,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:58:29,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:58:29,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:27" (1/3) ... [2019-11-06 21:58:29,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8146c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:29, skipping insertion in model container [2019-11-06 21:58:29,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:27" (2/3) ... [2019-11-06 21:58:29,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8146c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:29, skipping insertion in model container [2019-11-06 21:58:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:29" (3/3) ... [2019-11-06 21:58:29,245 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2019-11-06 21:58:29,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:58:29,266 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:58:29,278 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:58:29,316 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:58:29,316 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:58:29,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:58:29,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:58:29,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:58:29,317 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:58:29,317 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:58:29,317 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:58:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-11-06 21:58:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:58:29,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:29,351 INFO L410 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] [2019-11-06 21:58:29,353 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:29,358 INFO L82 PathProgramCache]: Analyzing trace with hash -154299971, now seen corresponding path program 1 times [2019-11-06 21:58:29,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:29,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986633171] [2019-11-06 21:58:29,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,106 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:30,219 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986633171] [2019-11-06 21:58:30,220 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:30,220 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:58:30,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615120074] [2019-11-06 21:58:30,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:58:30,227 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:58:30,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:30,246 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2019-11-06 21:58:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:31,293 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2019-11-06 21:58:31,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:58:31,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:58:31,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:31,311 INFO L225 Difference]: With dead ends: 296 [2019-11-06 21:58:31,311 INFO L226 Difference]: Without dead ends: 164 [2019-11-06 21:58:31,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-06 21:58:31,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2019-11-06 21:58:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-06 21:58:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-11-06 21:58:31,417 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 51 [2019-11-06 21:58:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:31,418 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-11-06 21:58:31,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:58:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-11-06 21:58:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:58:31,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:31,429 INFO L410 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] [2019-11-06 21:58:31,431 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:31,431 INFO L82 PathProgramCache]: Analyzing trace with hash 401693438, now seen corresponding path program 1 times [2019-11-06 21:58:31,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:31,432 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424469022] [2019-11-06 21:58:31,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,817 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:31,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424469022] [2019-11-06 21:58:31,862 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:31,862 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:58:31,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956569636] [2019-11-06 21:58:31,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:58:31,864 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:31,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:58:31,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:58:31,865 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 5 states. [2019-11-06 21:58:32,348 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:33,180 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2019-11-06 21:58:33,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:58:33,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:58:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:33,184 INFO L225 Difference]: With dead ends: 241 [2019-11-06 21:58:33,185 INFO L226 Difference]: Without dead ends: 154 [2019-11-06 21:58:33,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-06 21:58:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2019-11-06 21:58:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-06 21:58:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-11-06 21:58:33,222 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2019-11-06 21:58:33,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:33,222 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-11-06 21:58:33,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:58:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-11-06 21:58:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 21:58:33,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:33,224 INFO L410 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] [2019-11-06 21:58:33,225 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1332267464, now seen corresponding path program 1 times [2019-11-06 21:58:33,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:33,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369513579] [2019-11-06 21:58:33,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,587 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:33,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369513579] [2019-11-06 21:58:33,694 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:33,695 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:33,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107275427] [2019-11-06 21:58:33,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:33,696 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:33,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:33,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:33,697 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 9 states. [2019-11-06 21:58:34,159 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:34,514 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 21:58:34,804 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:35,073 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:36,441 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2019-11-06 21:58:36,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:58:36,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-11-06 21:58:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:36,444 INFO L225 Difference]: With dead ends: 250 [2019-11-06 21:58:36,444 INFO L226 Difference]: Without dead ends: 154 [2019-11-06 21:58:36,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:58:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-06 21:58:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2019-11-06 21:58:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-06 21:58:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2019-11-06 21:58:36,498 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 56 [2019-11-06 21:58:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:36,498 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2019-11-06 21:58:36,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2019-11-06 21:58:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 21:58:36,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:36,500 INFO L410 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] [2019-11-06 21:58:36,501 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -877153324, now seen corresponding path program 1 times [2019-11-06 21:58:36,501 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:36,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093766236] [2019-11-06 21:58:36,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,830 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:36,969 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093766236] [2019-11-06 21:58:36,970 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:36,970 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:58:36,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15303032] [2019-11-06 21:58:36,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:58:36,971 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:58:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:36,972 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2019-11-06 21:58:37,376 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:38,648 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:39,352 INFO L93 Difference]: Finished difference Result 344 states and 433 transitions. [2019-11-06 21:58:39,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:39,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-11-06 21:58:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:39,356 INFO L225 Difference]: With dead ends: 344 [2019-11-06 21:58:39,356 INFO L226 Difference]: Without dead ends: 248 [2019-11-06 21:58:39,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:58:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-11-06 21:58:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2019-11-06 21:58:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-11-06 21:58:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2019-11-06 21:58:39,416 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 69 [2019-11-06 21:58:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:39,416 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2019-11-06 21:58:39,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:58:39,416 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2019-11-06 21:58:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-06 21:58:39,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:39,418 INFO L410 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] [2019-11-06 21:58:39,418 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1061705923, now seen corresponding path program 1 times [2019-11-06 21:58:39,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:39,419 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413745503] [2019-11-06 21:58:39,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,758 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:39,869 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413745503] [2019-11-06 21:58:39,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:39,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:39,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229677093] [2019-11-06 21:58:39,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:39,870 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:39,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:39,871 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 9 states. [2019-11-06 21:58:40,278 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:41,576 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:41,875 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:42,170 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:42,444 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:43,487 INFO L93 Difference]: Finished difference Result 597 states and 752 transitions. [2019-11-06 21:58:43,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:58:43,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-11-06 21:58:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:43,492 INFO L225 Difference]: With dead ends: 597 [2019-11-06 21:58:43,492 INFO L226 Difference]: Without dead ends: 423 [2019-11-06 21:58:43,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:58:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-11-06 21:58:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 352. [2019-11-06 21:58:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2019-11-06 21:58:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 404 transitions. [2019-11-06 21:58:43,570 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 404 transitions. Word has length 83 [2019-11-06 21:58:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:43,571 INFO L462 AbstractCegarLoop]: Abstraction has 352 states and 404 transitions. [2019-11-06 21:58:43,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 404 transitions. [2019-11-06 21:58:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-06 21:58:43,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:43,573 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:43,573 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:43,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1506381919, now seen corresponding path program 1 times [2019-11-06 21:58:43,574 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:43,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580960978] [2019-11-06 21:58:43,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,863 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:43,980 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580960978] [2019-11-06 21:58:43,980 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:43,980 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:43,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796071444] [2019-11-06 21:58:43,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:43,981 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:43,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:43,982 INFO L87 Difference]: Start difference. First operand 352 states and 404 transitions. Second operand 10 states. [2019-11-06 21:58:44,456 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:45,725 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:45,992 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:46,310 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:46,618 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:47,820 INFO L93 Difference]: Finished difference Result 782 states and 967 transitions. [2019-11-06 21:58:47,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:58:47,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2019-11-06 21:58:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:47,825 INFO L225 Difference]: With dead ends: 782 [2019-11-06 21:58:47,826 INFO L226 Difference]: Without dead ends: 458 [2019-11-06 21:58:47,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-11-06 21:58:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-11-06 21:58:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 351. [2019-11-06 21:58:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-11-06 21:58:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2019-11-06 21:58:47,896 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 87 [2019-11-06 21:58:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:47,896 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2019-11-06 21:58:47,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:47,897 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2019-11-06 21:58:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:47,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:47,898 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:47,898 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1049604760, now seen corresponding path program 1 times [2019-11-06 21:58:47,899 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:47,899 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339846057] [2019-11-06 21:58:47,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,162 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:48,345 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339846057] [2019-11-06 21:58:48,345 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:48,345 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:48,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601718171] [2019-11-06 21:58:48,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:48,347 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:48,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:48,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:48,347 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 10 states. [2019-11-06 21:58:49,385 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:49,661 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:58:49,933 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:50,223 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:51,169 INFO L93 Difference]: Finished difference Result 785 states and 976 transitions. [2019-11-06 21:58:51,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:51,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 21:58:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:51,173 INFO L225 Difference]: With dead ends: 785 [2019-11-06 21:58:51,173 INFO L226 Difference]: Without dead ends: 462 [2019-11-06 21:58:51,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:58:51,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-11-06 21:58:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 361. [2019-11-06 21:58:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-11-06 21:58:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2019-11-06 21:58:51,247 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 88 [2019-11-06 21:58:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:51,248 INFO L462 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2019-11-06 21:58:51,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2019-11-06 21:58:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:51,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:51,250 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:51,250 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1751204634, now seen corresponding path program 1 times [2019-11-06 21:58:51,251 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:51,251 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367371482] [2019-11-06 21:58:51,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,528 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:51,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367371482] [2019-11-06 21:58:51,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:51,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:58:51,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517544754] [2019-11-06 21:58:51,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:58:51,681 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:58:51,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:58:51,683 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand 12 states. [2019-11-06 21:58:52,495 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:52,762 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:53,024 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:53,763 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:54,036 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:54,316 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:55,643 INFO L93 Difference]: Finished difference Result 809 states and 1018 transitions. [2019-11-06 21:58:55,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:55,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-11-06 21:58:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:55,651 INFO L225 Difference]: With dead ends: 809 [2019-11-06 21:58:55,651 INFO L226 Difference]: Without dead ends: 476 [2019-11-06 21:58:55,654 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:58:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-11-06 21:58:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2019-11-06 21:58:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-11-06 21:58:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2019-11-06 21:58:55,762 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 88 [2019-11-06 21:58:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:55,762 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2019-11-06 21:58:55,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:58:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2019-11-06 21:58:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:55,765 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:55,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:55,766 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash -818281765, now seen corresponding path program 1 times [2019-11-06 21:58:55,767 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:55,767 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472639269] [2019-11-06 21:58:55,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,083 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:56,217 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472639269] [2019-11-06 21:58:56,217 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:56,217 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:58:56,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774913420] [2019-11-06 21:58:56,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:56,219 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:58:56,220 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand 8 states. [2019-11-06 21:58:56,633 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:57,178 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:59,475 INFO L93 Difference]: Finished difference Result 1128 states and 1469 transitions. [2019-11-06 21:58:59,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 21:58:59,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-11-06 21:58:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:59,482 INFO L225 Difference]: With dead ends: 1128 [2019-11-06 21:58:59,482 INFO L226 Difference]: Without dead ends: 787 [2019-11-06 21:58:59,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:58:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-11-06 21:58:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 655. [2019-11-06 21:58:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-11-06 21:58:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 773 transitions. [2019-11-06 21:58:59,629 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 773 transitions. Word has length 88 [2019-11-06 21:58:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:59,630 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 773 transitions. [2019-11-06 21:58:59,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:58:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 773 transitions. [2019-11-06 21:58:59,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 21:58:59,636 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:59,636 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:59,636 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:59,637 INFO L82 PathProgramCache]: Analyzing trace with hash -470187979, now seen corresponding path program 1 times [2019-11-06 21:58:59,637 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:59,638 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082378708] [2019-11-06 21:58:59,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,950 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:00,042 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082378708] [2019-11-06 21:59:00,042 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:00,043 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:59:00,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039415151] [2019-11-06 21:59:00,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:00,043 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:00,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:59:00,044 INFO L87 Difference]: Start difference. First operand 655 states and 773 transitions. Second operand 8 states. [2019-11-06 21:59:00,619 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:03,039 INFO L93 Difference]: Finished difference Result 1292 states and 1674 transitions. [2019-11-06 21:59:03,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:59:03,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-11-06 21:59:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:03,047 INFO L225 Difference]: With dead ends: 1292 [2019-11-06 21:59:03,048 INFO L226 Difference]: Without dead ends: 1289 [2019-11-06 21:59:03,049 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2019-11-06 21:59:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2019-11-06 21:59:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1091. [2019-11-06 21:59:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-11-06 21:59:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1300 transitions. [2019-11-06 21:59:03,237 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1300 transitions. Word has length 92 [2019-11-06 21:59:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:03,238 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1300 transitions. [2019-11-06 21:59:03,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:03,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1300 transitions. [2019-11-06 21:59:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 21:59:03,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:03,242 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:03,242 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:03,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1507801122, now seen corresponding path program 1 times [2019-11-06 21:59:03,243 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:03,243 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234514431] [2019-11-06 21:59:03,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,608 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-06 21:59:03,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234514431] [2019-11-06 21:59:03,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245298304] [2019-11-06 21:59:03,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:59:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:04,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:59:04,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:59:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:04,109 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:59:04,109 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2019-11-06 21:59:04,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266254073] [2019-11-06 21:59:04,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:59:04,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:04,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:59:04,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:59:04,111 INFO L87 Difference]: Start difference. First operand 1091 states and 1300 transitions. Second operand 3 states. [2019-11-06 21:59:04,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:04,450 INFO L93 Difference]: Finished difference Result 1831 states and 2219 transitions. [2019-11-06 21:59:04,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:59:04,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-11-06 21:59:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:04,457 INFO L225 Difference]: With dead ends: 1831 [2019-11-06 21:59:04,457 INFO L226 Difference]: Without dead ends: 892 [2019-11-06 21:59:04,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:59:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-11-06 21:59:04,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 892. [2019-11-06 21:59:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2019-11-06 21:59:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1050 transitions. [2019-11-06 21:59:04,679 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1050 transitions. Word has length 150 [2019-11-06 21:59:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:04,681 INFO L462 AbstractCegarLoop]: Abstraction has 892 states and 1050 transitions. [2019-11-06 21:59:04,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:59:04,681 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1050 transitions. [2019-11-06 21:59:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 21:59:04,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:04,684 INFO L410 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] [2019-11-06 21:59:04,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:59:04,891 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:04,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1309638405, now seen corresponding path program 1 times [2019-11-06 21:59:04,892 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:04,892 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200803950] [2019-11-06 21:59:04,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat