/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_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:01:28,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:01:28,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:01:28,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:01:28,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:01:28,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:01:28,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:01:28,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:01:28,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:01:28,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:01:28,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:01:28,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:01:28,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:01:28,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:01:28,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:01:28,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:01:28,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:01:28,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:01:28,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:01:28,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:01:28,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:01:28,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:01:28,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:01:28,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:01:28,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:01:28,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:01:28,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:01:28,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:01:28,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:01:28,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:01:28,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:01:28,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:01:28,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:01:28,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:01:28,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:01:28,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:01:28,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:01:28,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:01:28,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:01:28,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:01:28,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:01:28,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:01:28,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:01:28,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:01:28,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:01:28,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:01:28,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:01:28,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:01:28,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:01:28,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:01:28,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:01:28,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:01:28,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:01:28,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:01:28,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:01:28,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:01:28,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:01:28,889 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:01:28,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:01:28,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:01:28,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:01:28,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:01:28,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:01:28,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:01:28,891 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:01:29,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:01:29,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:01:29,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:01:29,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:01:29,329 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:01:29,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-04 15:01:29,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841e1ec99/88edd8c1803846749c672da7b71e3281/FLAGf2d68ced3 [2020-09-04 15:01:29,944 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:01:29,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-09-04 15:01:29,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841e1ec99/88edd8c1803846749c672da7b71e3281/FLAGf2d68ced3 [2020-09-04 15:01:30,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841e1ec99/88edd8c1803846749c672da7b71e3281 [2020-09-04 15:01:30,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:01:30,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:01:30,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:30,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:01:30,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:01:30,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:30,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30, skipping insertion in model container [2020-09-04 15:01:30,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:30,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:01:30,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:01:30,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:30,828 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:01:30,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:30,947 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:01:30,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30 WrapperNode [2020-09-04 15:01:30,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:30,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:01:30,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:01:30,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:01:30,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:30,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:30,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:30,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:31,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:31,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:31,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... [2020-09-04 15:01:31,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:01:31,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:01:31,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:01:31,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:01:31,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:01:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:01:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:01:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:01:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:01:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:01:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:01:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:01:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:01:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:01:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:01:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:01:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:01:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:01:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:01:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:01:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:01:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:01:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:01:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:01:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:01:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:01:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:01:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:01:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:01:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:01:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:01:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:01:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:01:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:01:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:01:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:01:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:01:32,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:01:32,298 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:01:32,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:32 BoogieIcfgContainer [2020-09-04 15:01:32,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:01:32,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:01:32,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:01:32,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:01:32,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:01:30" (1/3) ... [2020-09-04 15:01:32,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a504d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:32, skipping insertion in model container [2020-09-04 15:01:32,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:30" (2/3) ... [2020-09-04 15:01:32,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a504d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:32, skipping insertion in model container [2020-09-04 15:01:32,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:32" (3/3) ... [2020-09-04 15:01:32,316 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-09-04 15:01:32,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:01:32,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:01:32,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:01:32,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:01:32,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:01:32,382 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:01:32,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:01:32,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:01:32,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:01:32,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:01:32,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:01:32,411 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-09-04 15:01:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:01:32,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:32,434 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] [2020-09-04 15:01:32,435 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash -955195086, now seen corresponding path program 1 times [2020-09-04 15:01:32,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:32,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903652872] [2020-09-04 15:01:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:32,529 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,229 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:01:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:01:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:33,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903652872] [2020-09-04 15:01:33,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:33,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:01:33,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822028617] [2020-09-04 15:01:33,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:01:33,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:33,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:01:33,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:01:33,466 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2020-09-04 15:01:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:34,750 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-09-04 15:01:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:01:34,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:01:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:34,774 INFO L225 Difference]: With dead ends: 419 [2020-09-04 15:01:34,774 INFO L226 Difference]: Without dead ends: 266 [2020-09-04 15:01:34,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:01:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-04 15:01:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-09-04 15:01:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-04 15:01:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-09-04 15:01:34,915 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-09-04 15:01:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:34,916 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-09-04 15:01:34,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:01:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-09-04 15:01:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:01:34,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:34,921 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] [2020-09-04 15:01:34,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:01:34,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:34,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:34,922 INFO L82 PathProgramCache]: Analyzing trace with hash -853880488, now seen corresponding path program 1 times [2020-09-04 15:01:34,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:34,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504621423] [2020-09-04 15:01:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:34,926 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,307 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:01:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:01:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:35,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504621423] [2020-09-04 15:01:35,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:35,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:01:35,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006512152] [2020-09-04 15:01:35,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:01:35,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:35,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:01:35,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:01:35,436 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand 4 states. [2020-09-04 15:01:36,096 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:36,792 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2020-09-04 15:01:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:01:36,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:01:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:36,798 INFO L225 Difference]: With dead ends: 336 [2020-09-04 15:01:36,798 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 15:01:36,801 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 [2020-09-04 15:01:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 15:01:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 15:01:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 15:01:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2020-09-04 15:01:36,872 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 143 [2020-09-04 15:01:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:36,873 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2020-09-04 15:01:36,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:01:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2020-09-04 15:01:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:01:36,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:36,876 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] [2020-09-04 15:01:36,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:01:36,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:36,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2102825874, now seen corresponding path program 1 times [2020-09-04 15:01:36,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:36,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192815059] [2020-09-04 15:01:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:36,880 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,323 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:01:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:01:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:37,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192815059] [2020-09-04 15:01:37,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:37,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:01:37,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764157244] [2020-09-04 15:01:37,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:01:37,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:01:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:01:37,491 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 9 states. [2020-09-04 15:01:37,986 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:38,396 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:38,690 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:01:38,986 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:39,281 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:39,592 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:40,798 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-09-04 15:01:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:01:40,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:01:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:40,803 INFO L225 Difference]: With dead ends: 356 [2020-09-04 15:01:40,803 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 15:01:40,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:01:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 15:01:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 15:01:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 15:01:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2020-09-04 15:01:40,887 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 152 [2020-09-04 15:01:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:40,897 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2020-09-04 15:01:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:01:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2020-09-04 15:01:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 15:01:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:40,901 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] [2020-09-04 15:01:40,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:01:40,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:40,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1355593621, now seen corresponding path program 1 times [2020-09-04 15:01:40,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:40,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618870695] [2020-09-04 15:01:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:40,904 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,236 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:01:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:01:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:01:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:01:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:41,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618870695] [2020-09-04 15:01:41,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:41,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:01:41,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672828360] [2020-09-04 15:01:41,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:01:41,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:41,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:01:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:01:41,378 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand 6 states. [2020-09-04 15:01:41,978 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:43,423 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:43,916 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2020-09-04 15:01:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:01:43,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-04 15:01:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:43,921 INFO L225 Difference]: With dead ends: 478 [2020-09-04 15:01:43,921 INFO L226 Difference]: Without dead ends: 371 [2020-09-04 15:01:43,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:01:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-04 15:01:44,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 312. [2020-09-04 15:01:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-04 15:01:44,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 336 transitions. [2020-09-04 15:01:44,061 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 336 transitions. Word has length 160 [2020-09-04 15:01:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:44,062 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 336 transitions. [2020-09-04 15:01:44,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:01:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 336 transitions. [2020-09-04 15:01:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 15:01:44,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:44,065 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] [2020-09-04 15:01:44,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:01:44,065 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2011013837, now seen corresponding path program 1 times [2020-09-04 15:01:44,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:44,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499903209] [2020-09-04 15:01:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:44,069 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,374 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:01:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:01:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:01:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:01:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 15:01:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:01:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:44,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499903209] [2020-09-04 15:01:44,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:44,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:01:44,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777935836] [2020-09-04 15:01:44,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:01:44,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:44,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:01:44,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:01:44,644 INFO L87 Difference]: Start difference. First operand 312 states and 336 transitions. Second operand 12 states. [2020-09-04 15:01:45,420 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:45,844 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:01:46,078 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:46,345 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:46,631 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:47,508 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:47,845 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:48,167 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:48,503 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:48,806 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:49,797 INFO L93 Difference]: Finished difference Result 578 states and 658 transitions. [2020-09-04 15:01:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:01:49,798 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 184 [2020-09-04 15:01:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:49,802 INFO L225 Difference]: With dead ends: 578 [2020-09-04 15:01:49,804 INFO L226 Difference]: Without dead ends: 376 [2020-09-04 15:01:49,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-09-04 15:01:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-09-04 15:01:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 318. [2020-09-04 15:01:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-09-04 15:01:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 342 transitions. [2020-09-04 15:01:49,923 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 342 transitions. Word has length 184 [2020-09-04 15:01:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:49,924 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 342 transitions. [2020-09-04 15:01:49,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:01:49,924 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 342 transitions. [2020-09-04 15:01:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 15:01:49,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:49,926 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] [2020-09-04 15:01:49,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:01:49,927 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:49,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash 394324589, now seen corresponding path program 1 times [2020-09-04 15:01:49,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:49,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225861302] [2020-09-04 15:01:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:49,930 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,295 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:01:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:01:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:01:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:01:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 15:01:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:01:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:50,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225861302] [2020-09-04 15:01:50,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:50,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:01:50,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151096188] [2020-09-04 15:01:50,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:01:50,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:50,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:01:50,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:01:50,498 INFO L87 Difference]: Start difference. First operand 318 states and 342 transitions. Second operand 9 states. [2020-09-04 15:01:51,002 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:52,537 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:52,852 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:53,163 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:53,456 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:53,768 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:54,065 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:54,400 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:54,812 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:55,694 INFO L93 Difference]: Finished difference Result 788 states and 910 transitions. [2020-09-04 15:01:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:01:55,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 184 [2020-09-04 15:01:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:55,700 INFO L225 Difference]: With dead ends: 788 [2020-09-04 15:01:55,700 INFO L226 Difference]: Without dead ends: 580 [2020-09-04 15:01:55,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:01:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-09-04 15:01:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 489. [2020-09-04 15:01:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-09-04 15:01:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 532 transitions. [2020-09-04 15:01:55,839 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 532 transitions. Word has length 184 [2020-09-04 15:01:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:55,840 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 532 transitions. [2020-09-04 15:01:55,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:01:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 532 transitions. [2020-09-04 15:01:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-04 15:01:55,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:55,844 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, 1, 1, 1, 1, 1] [2020-09-04 15:01:55,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:01:55,844 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:55,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:55,845 INFO L82 PathProgramCache]: Analyzing trace with hash 682865486, now seen corresponding path program 1 times [2020-09-04 15:01:55,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:55,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780837486] [2020-09-04 15:01:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:55,848 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,236 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:01:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:01:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:01:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:01:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:01:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-04 15:01:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:01:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:56,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780837486] [2020-09-04 15:01:56,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:56,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:01:56,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015471500] [2020-09-04 15:01:56,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:01:56,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:56,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:01:56,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:01:56,435 INFO L87 Difference]: Start difference. First operand 489 states and 532 transitions. Second operand 10 states. [2020-09-04 15:01:56,974 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:58,487 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:58,804 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:59,104 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:59,381 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:59,685 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:00,035 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:00,346 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:00,675 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:01,487 INFO L93 Difference]: Finished difference Result 646 states and 750 transitions. [2020-09-04 15:02:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:02:01,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 189 [2020-09-04 15:02:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:01,492 INFO L225 Difference]: With dead ends: 646 [2020-09-04 15:02:01,492 INFO L226 Difference]: Without dead ends: 643 [2020-09-04 15:02:01,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:02:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-09-04 15:02:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 489. [2020-09-04 15:02:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-09-04 15:02:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 531 transitions. [2020-09-04 15:02:01,680 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 531 transitions. Word has length 189 [2020-09-04 15:02:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:01,680 INFO L479 AbstractCegarLoop]: Abstraction has 489 states and 531 transitions. [2020-09-04 15:02:01,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 531 transitions. [2020-09-04 15:02:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:02:01,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:01,684 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, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:01,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:02:01,685 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:01,685 INFO L82 PathProgramCache]: Analyzing trace with hash 888496141, now seen corresponding path program 1 times [2020-09-04 15:02:01,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:01,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590526774] [2020-09-04 15:02:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:01,690 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:01,987 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:02:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:02:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:02,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590526774] [2020-09-04 15:02:02,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:02,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:02,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634200543] [2020-09-04 15:02:02,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:02,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:02,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:02,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:02,205 INFO L87 Difference]: Start difference. First operand 489 states and 531 transitions. Second operand 10 states. [2020-09-04 15:02:03,728 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:04,046 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:04,374 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:02:04,687 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:04,991 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:05,279 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:06,339 INFO L93 Difference]: Finished difference Result 1032 states and 1191 transitions. [2020-09-04 15:02:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:02:06,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-04 15:02:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:06,344 INFO L225 Difference]: With dead ends: 1032 [2020-09-04 15:02:06,345 INFO L226 Difference]: Without dead ends: 653 [2020-09-04 15:02:06,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:02:06,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-09-04 15:02:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 505. [2020-09-04 15:02:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-09-04 15:02:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 547 transitions. [2020-09-04 15:02:06,547 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 547 transitions. Word has length 190 [2020-09-04 15:02:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:06,547 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 547 transitions. [2020-09-04 15:02:06,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 547 transitions. [2020-09-04 15:02:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:02:06,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:06,550 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, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:06,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:02:06,551 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:06,551 INFO L82 PathProgramCache]: Analyzing trace with hash -325395952, now seen corresponding path program 1 times [2020-09-04 15:02:06,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:06,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188813711] [2020-09-04 15:02:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:06,554 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,893 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:02:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:02:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:07,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188813711] [2020-09-04 15:02:07,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:07,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:02:07,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605762186] [2020-09-04 15:02:07,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:02:07,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:07,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:02:07,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:02:07,091 INFO L87 Difference]: Start difference. First operand 505 states and 547 transitions. Second operand 7 states. [2020-09-04 15:02:07,613 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:08,204 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:10,467 INFO L93 Difference]: Finished difference Result 1471 states and 1751 transitions. [2020-09-04 15:02:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:10,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-04 15:02:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:10,475 INFO L225 Difference]: With dead ends: 1471 [2020-09-04 15:02:10,475 INFO L226 Difference]: Without dead ends: 1076 [2020-09-04 15:02:10,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:02:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-09-04 15:02:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 903. [2020-09-04 15:02:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-09-04 15:02:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1011 transitions. [2020-09-04 15:02:10,863 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1011 transitions. Word has length 190 [2020-09-04 15:02:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:10,863 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1011 transitions. [2020-09-04 15:02:10,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:02:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1011 transitions. [2020-09-04 15:02:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:02:10,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:10,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:10,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:02:10,866 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash -527704718, now seen corresponding path program 1 times [2020-09-04 15:02:10,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:10,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048606425] [2020-09-04 15:02:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:10,869 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:10,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:11,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:11,269 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:02:11,270 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:02:11,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:02:11,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:02:11 BoogieIcfgContainer [2020-09-04 15:02:11,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:02:11,316 INFO L168 Benchmark]: Toolchain (without parser) took 41055.29 ms. Allocated memory was 139.5 MB in the beginning and 771.8 MB in the end (delta: 632.3 MB). Free memory was 101.4 MB in the beginning and 497.0 MB in the end (delta: -395.5 MB). Peak memory consumption was 236.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:11,322 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:02:11,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.98 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 172.8 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:11,324 INFO L168 Benchmark]: Boogie Preprocessor took 95.22 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:11,328 INFO L168 Benchmark]: RCFGBuilder took 1263.33 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 168.3 MB in the beginning and 180.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:11,330 INFO L168 Benchmark]: TraceAbstraction took 39005.09 ms. Allocated memory was 238.0 MB in the beginning and 771.8 MB in the end (delta: 533.7 MB). Free memory was 178.8 MB in the beginning and 497.0 MB in the end (delta: -318.1 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:11,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.98 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 172.8 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.22 ms. Allocated memory is still 203.9 MB. Free memory was 172.8 MB in the beginning and 168.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1263.33 ms. Allocated memory was 203.9 MB in the beginning and 238.0 MB in the end (delta: 34.1 MB). Free memory was 168.3 MB in the beginning and 180.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39005.09 ms. Allocated memory was 238.0 MB in the beginning and 771.8 MB in the end (delta: 533.7 MB). Free memory was 178.8 MB in the beginning and 497.0 MB in the end (delta: -318.1 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: 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; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 31.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1935 SDtfs, 3181 SDslu, 3627 SDs, 0 SdLazy, 6418 SolverSat, 882 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=903occurred in iteration=9, 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, 9 MinimizatonAttempts, 786 StatesRemovedByMinimization, 9 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...