/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:09:17,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:09:17,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:09:17,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:09:17,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:09:17,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:09:17,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:09:17,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:09:17,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:09:17,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:09:17,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:09:17,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:09:17,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:09:17,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:09:17,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:09:17,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:09:17,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:09:17,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:09:17,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:09:17,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:09:17,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:09:17,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:09:17,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:09:17,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:09:17,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:09:17,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:09:17,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:09:17,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:09:17,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:09:17,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:09:17,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:09:17,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:09:17,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:09:17,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:09:17,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:09:17,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:09:17,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:09:17,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:09:17,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:09:17,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:09:17,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:09:17,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:09:17,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:09:17,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:09:17,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:09:17,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:09:17,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:09:17,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:09:17,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:09:17,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:09:17,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:09:17,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:09:17,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:09:17,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:09:17,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:09:17,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:09:17,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:09:17,927 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:09:17,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:09:17,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:09:17,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:09:17,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:09:17,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:09:17,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:09:17,928 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:09:18,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:09:18,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:09:18,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:09:18,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:09:18,208 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:09:18,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-22 18:09:18,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e977daf/ebea6e676ad4415faa95d6f0d369e8eb/FLAG5facee34d [2020-08-22 18:09:18,833 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:09:18,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-22 18:09:18,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e977daf/ebea6e676ad4415faa95d6f0d369e8eb/FLAG5facee34d [2020-08-22 18:09:19,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e977daf/ebea6e676ad4415faa95d6f0d369e8eb [2020-08-22 18:09:19,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:09:19,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:09:19,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:19,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:09:19,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:09:19,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19, skipping insertion in model container [2020-08-22 18:09:19,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:09:19,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:09:19,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:19,664 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:09:19,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:19,820 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:09:19,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19 WrapperNode [2020-08-22 18:09:19,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:19,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:09:19,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:09:19,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:09:19,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (1/1) ... [2020-08-22 18:09:19,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:09:19,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:09:19,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:09:19,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:09:19,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (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 [2020-08-22 18:09:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:09:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:09:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:09:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:09:20,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:09:20,014 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:09:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:09:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:09:20,016 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:09:20,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:09:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:09:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:09:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:09:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:09:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:09:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:09:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:09:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:09:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:09:20,027 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:09:20,028 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:09:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:09:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:09:20,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:09:21,131 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:09:21,131 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:09:21,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:21 BoogieIcfgContainer [2020-08-22 18:09:21,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:09:21,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:09:21,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:09:21,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:09:21,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:19" (1/3) ... [2020-08-22 18:09:21,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fadd36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:21, skipping insertion in model container [2020-08-22 18:09:21,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:19" (2/3) ... [2020-08-22 18:09:21,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fadd36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:21, skipping insertion in model container [2020-08-22 18:09:21,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:21" (3/3) ... [2020-08-22 18:09:21,146 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-22 18:09:21,157 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:09:21,165 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:09:21,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:09:21,201 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:09:21,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:09:21,201 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:09:21,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:09:21,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:09:21,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:09:21,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:09:21,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:09:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states. [2020-08-22 18:09:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 18:09:21,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:21,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:21,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:21,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1598852952, now seen corresponding path program 1 times [2020-08-22 18:09:21,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:21,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687020480] [2020-08-22 18:09:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:21,313 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:21,918 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 18:09:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:22,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687020480] [2020-08-22 18:09:22,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:22,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:09:22,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241552265] [2020-08-22 18:09:22,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:09:22,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:22,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:09:22,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:22,108 INFO L87 Difference]: Start difference. First operand 278 states. Second operand 3 states. [2020-08-22 18:09:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:23,337 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-08-22 18:09:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:09:23,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 18:09:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:23,357 INFO L225 Difference]: With dead ends: 419 [2020-08-22 18:09:23,358 INFO L226 Difference]: Without dead ends: 266 [2020-08-22 18:09:23,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-22 18:09:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-08-22 18:09:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-08-22 18:09:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-08-22 18:09:23,527 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-08-22 18:09:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:23,529 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-08-22 18:09:23,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:09:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-08-22 18:09:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 18:09:23,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:23,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:23,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:09:23,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash -469194886, now seen corresponding path program 1 times [2020-08-22 18:09:23,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:23,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340522123] [2020-08-22 18:09:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:23,551 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:23,970 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:09:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:24,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340522123] [2020-08-22 18:09:24,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:24,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:09:24,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504065358] [2020-08-22 18:09:24,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:09:24,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:09:24,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:09:24,078 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand 4 states. [2020-08-22 18:09:24,671 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:25,375 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2020-08-22 18:09:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:09:25,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 18:09:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:25,382 INFO L225 Difference]: With dead ends: 336 [2020-08-22 18:09:25,382 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 18:09:25,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:09:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 18:09:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-08-22 18:09:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-22 18:09:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2020-08-22 18:09:25,457 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 143 [2020-08-22 18:09:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:25,458 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2020-08-22 18:09:25,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:09:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2020-08-22 18:09:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 18:09:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:25,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:25,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:09:25,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash 162245926, now seen corresponding path program 1 times [2020-08-22 18:09:25,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:25,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390342222] [2020-08-22 18:09:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:25,465 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,832 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:09:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:25,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390342222] [2020-08-22 18:09:25,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:25,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:09:25,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397362513] [2020-08-22 18:09:25,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:09:25,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:09:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:09:25,980 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 9 states. [2020-08-22 18:09:26,449 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:26,789 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:27,041 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:27,286 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:27,560 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:27,794 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:29,000 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-08-22 18:09:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:09:29,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-08-22 18:09:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:29,005 INFO L225 Difference]: With dead ends: 356 [2020-08-22 18:09:29,005 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 18:09:29,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:09:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 18:09:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-08-22 18:09:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-08-22 18:09:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2020-08-22 18:09:29,064 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 152 [2020-08-22 18:09:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:29,064 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2020-08-22 18:09:29,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:09:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2020-08-22 18:09:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 18:09:29,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:29,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:29,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:09:29,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:29,068 INFO L82 PathProgramCache]: Analyzing trace with hash 705113863, now seen corresponding path program 1 times [2020-08-22 18:09:29,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:29,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531840669] [2020-08-22 18:09:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:29,072 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,360 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:09:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 18:09:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 18:09:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:29,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531840669] [2020-08-22 18:09:29,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:29,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:09:29,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765341306] [2020-08-22 18:09:29,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:09:29,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:09:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:09:29,471 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand 6 states. [2020-08-22 18:09:30,189 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:31,474 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:31,937 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2020-08-22 18:09:31,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:09:31,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-08-22 18:09:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:31,942 INFO L225 Difference]: With dead ends: 478 [2020-08-22 18:09:31,942 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 18:09:31,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:09:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 18:09:32,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 312. [2020-08-22 18:09:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-22 18:09:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 336 transitions. [2020-08-22 18:09:32,045 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 336 transitions. Word has length 160 [2020-08-22 18:09:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:32,046 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 336 transitions. [2020-08-22 18:09:32,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:09:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 336 transitions. [2020-08-22 18:09:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-08-22 18:09:32,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:32,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:32,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:09:32,050 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:32,050 INFO L82 PathProgramCache]: Analyzing trace with hash 392099313, now seen corresponding path program 1 times [2020-08-22 18:09:32,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:32,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769412004] [2020-08-22 18:09:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:32,053 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,329 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:09:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 18:09:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-22 18:09:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:32,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769412004] [2020-08-22 18:09:32,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:32,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:32,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264042493] [2020-08-22 18:09:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:32,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:32,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:32,556 INFO L87 Difference]: Start difference. First operand 312 states and 336 transitions. Second operand 14 states. [2020-08-22 18:09:33,117 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:33,563 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:33,897 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:34,268 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:34,578 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:34,829 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:35,477 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:36,519 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:36,770 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:37,032 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:37,281 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:37,528 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:37,768 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:38,013 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:38,283 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:38,577 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:38,841 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:39,741 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:39,986 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:40,323 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:41,035 INFO L93 Difference]: Finished difference Result 916 states and 1098 transitions. [2020-08-22 18:09:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 18:09:41,036 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 184 [2020-08-22 18:09:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:41,044 INFO L225 Difference]: With dead ends: 916 [2020-08-22 18:09:41,045 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 18:09:41,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 18:09:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 18:09:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 617. [2020-08-22 18:09:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-08-22 18:09:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 687 transitions. [2020-08-22 18:09:41,260 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 687 transitions. Word has length 184 [2020-08-22 18:09:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:41,261 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 687 transitions. [2020-08-22 18:09:41,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:09:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 687 transitions. [2020-08-22 18:09:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-22 18:09:41,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:41,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:41,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:09:41,267 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:41,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:41,267 INFO L82 PathProgramCache]: Analyzing trace with hash -45879308, now seen corresponding path program 1 times [2020-08-22 18:09:41,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:41,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296212135] [2020-08-22 18:09:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:41,297 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,595 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:41,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:09:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:09:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:09:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 18:09:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-22 18:09:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-22 18:09:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-22 18:09:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 18:09:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:41,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296212135] [2020-08-22 18:09:41,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:41,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:41,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583600716] [2020-08-22 18:09:41,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:41,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:41,977 INFO L87 Difference]: Start difference. First operand 617 states and 687 transitions. Second operand 14 states. [2020-08-22 18:09:42,415 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:43,148 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:43,802 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:44,090 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:44,348 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:44,619 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:44,866 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:45,125 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:45,348 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:45,594 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:09:45,827 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:46,091 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:46,373 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:46,617 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:48,028 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:48,292 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:48,533 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:09:48,755 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:48,977 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:49,199 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:49,711 INFO L93 Difference]: Finished difference Result 1229 states and 1451 transitions. [2020-08-22 18:09:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 18:09:49,712 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 241 [2020-08-22 18:09:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:49,717 INFO L225 Difference]: With dead ends: 1229 [2020-08-22 18:09:49,717 INFO L226 Difference]: Without dead ends: 722 [2020-08-22 18:09:49,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 18:09:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-08-22 18:09:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 613. [2020-08-22 18:09:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-08-22 18:09:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 683 transitions. [2020-08-22 18:09:49,952 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 683 transitions. Word has length 241 [2020-08-22 18:09:49,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:49,952 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 683 transitions. [2020-08-22 18:09:49,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:09:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 683 transitions. [2020-08-22 18:09:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-08-22 18:09:49,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:49,957 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:49,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:09:49,957 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash 440058570, now seen corresponding path program 1 times [2020-08-22 18:09:49,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:49,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532536490] [2020-08-22 18:09:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:49,967 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,218 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:09:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:09:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-22 18:09:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 18:09:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-22 18:09:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-22 18:09:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:50,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532536490] [2020-08-22 18:09:50,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:50,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:50,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281522228] [2020-08-22 18:09:50,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:50,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:50,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:50,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:50,468 INFO L87 Difference]: Start difference. First operand 613 states and 683 transitions. Second operand 14 states. [2020-08-22 18:09:50,956 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:51,186 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:51,418 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:51,643 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:51,857 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:52,570 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:52,786 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:53,016 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:53,254 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:53,476 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:54,401 INFO L93 Difference]: Finished difference Result 1053 states and 1208 transitions. [2020-08-22 18:09:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:09:54,402 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2020-08-22 18:09:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:54,407 INFO L225 Difference]: With dead ends: 1053 [2020-08-22 18:09:54,407 INFO L226 Difference]: Without dead ends: 550 [2020-08-22 18:09:54,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 18:09:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-22 18:09:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 508. [2020-08-22 18:09:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-08-22 18:09:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 562 transitions. [2020-08-22 18:09:54,650 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 562 transitions. Word has length 232 [2020-08-22 18:09:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:54,651 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 562 transitions. [2020-08-22 18:09:54,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:09:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 562 transitions. [2020-08-22 18:09:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 18:09:54,655 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:54,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:54,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:09:54,656 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1204398017, now seen corresponding path program 1 times [2020-08-22 18:09:54,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:54,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884629310] [2020-08-22 18:09:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:54,674 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,968 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:54,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:09:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:09:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:09:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:09:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 18:09:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-22 18:09:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 18:09:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:09:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-22 18:09:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-22 18:09:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:09:55,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884629310] [2020-08-22 18:09:55,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:55,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 18:09:55,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791535504] [2020-08-22 18:09:55,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 18:09:55,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 18:09:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 18:09:55,196 INFO L87 Difference]: Start difference. First operand 508 states and 562 transitions. Second operand 13 states. [2020-08-22 18:09:55,626 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:56,313 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:57,323 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:57,550 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:57,802 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:58,058 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:58,280 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:58,501 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:58,728 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:58,978 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:59,257 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:59,484 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:00,257 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:00,466 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:01,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:01,416 INFO L93 Difference]: Finished difference Result 1105 states and 1307 transitions. [2020-08-22 18:10:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 18:10:01,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 237 [2020-08-22 18:10:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:01,426 INFO L225 Difference]: With dead ends: 1105 [2020-08-22 18:10:01,427 INFO L226 Difference]: Without dead ends: 788 [2020-08-22 18:10:01,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 18:10:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-08-22 18:10:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 651. [2020-08-22 18:10:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-08-22 18:10:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 731 transitions. [2020-08-22 18:10:01,772 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 731 transitions. Word has length 237 [2020-08-22 18:10:01,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:01,773 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 731 transitions. [2020-08-22 18:10:01,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 18:10:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 731 transitions. [2020-08-22 18:10:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-22 18:10:01,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:01,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:01,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:10:01,781 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385309, now seen corresponding path program 2 times [2020-08-22 18:10:01,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:01,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533337201] [2020-08-22 18:10:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:01,798 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:01,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:01,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:02,277 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:10:02,277 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:10:02,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:10:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:10:02 BoogieIcfgContainer [2020-08-22 18:10:02,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:10:02,316 INFO L168 Benchmark]: Toolchain (without parser) took 43201.14 ms. Allocated memory was 140.5 MB in the beginning and 833.6 MB in the end (delta: 693.1 MB). Free memory was 103.8 MB in the beginning and 592.8 MB in the end (delta: -489.0 MB). Peak memory consumption was 204.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,317 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.91 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 173.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,318 INFO L168 Benchmark]: Boogie Preprocessor took 108.53 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,319 INFO L168 Benchmark]: RCFGBuilder took 1207.92 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 169.7 MB in the beginning and 177.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,320 INFO L168 Benchmark]: TraceAbstraction took 41175.64 ms. Allocated memory was 235.9 MB in the beginning and 833.6 MB in the end (delta: 597.7 MB). Free memory was 177.4 MB in the beginning and 592.8 MB in the end (delta: -415.4 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:02,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.91 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 173.7 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.53 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1207.92 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 169.7 MB in the beginning and 177.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41175.64 ms. Allocated memory was 235.9 MB in the beginning and 833.6 MB in the end (delta: 597.7 MB). Free memory was 177.4 MB in the beginning and 592.8 MB in the end (delta: -415.4 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1785 SDtfs, 3671 SDslu, 4506 SDs, 0 SdLazy, 8453 SolverSat, 1042 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 224 SyntacticMatches, 7 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=651occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 547 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...