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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:14,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:14,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:14,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:14,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:14,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:14,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:14,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:14,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:14,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:14,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:14,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:14,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:14,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:14,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:14,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:14,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:14,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:14,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:14,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:14,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:14,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:14,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:14,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:14,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:14,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:14,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:14,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:14,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:14,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:14,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:14,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:14,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:14,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:14,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:14,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:14,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:14,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:14,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:14,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:14,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:14,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:14,898 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:14,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:14,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:14,900 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:14,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:14,901 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:14,901 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:14,901 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:14,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:14,901 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:14,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:14,904 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:14,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:14,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:14,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:14,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:14,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:14,906 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:14,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:14,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:14,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:14,907 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:14,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:14,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:14,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:14,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:14,908 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:14,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:14,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:14,908 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:14,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:14,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:14,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:14,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:14,968 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:14,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2019-09-20 13:30:15,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4c0c172/85b4619e948b4141befad55661ffc298/FLAGf9f77d949 [2019-09-20 13:30:15,643 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:15,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2019-09-20 13:30:15,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4c0c172/85b4619e948b4141befad55661ffc298/FLAGf9f77d949 [2019-09-20 13:30:15,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4c0c172/85b4619e948b4141befad55661ffc298 [2019-09-20 13:30:15,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:15,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:15,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:15,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:15,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:15,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fda80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:15, skipping insertion in model container [2019-09-20 13:30:15,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:15" (1/1) ... [2019-09-20 13:30:15,956 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:16,017 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:16,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:16,481 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:16,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:16,652 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:16,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16 WrapperNode [2019-09-20 13:30:16,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:16,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:16,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:16,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:16,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... [2019-09-20 13:30:16,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:16,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:16,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:16,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:16,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:16,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:16,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:30:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-20 13:30:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-20 13:30:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:18,060 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:18,061 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:18,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:18 BoogieIcfgContainer [2019-09-20 13:30:18,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:18,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:18,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:18,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:15" (1/3) ... [2019-09-20 13:30:18,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc9585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:18, skipping insertion in model container [2019-09-20 13:30:18,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:16" (2/3) ... [2019-09-20 13:30:18,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc9585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:18, skipping insertion in model container [2019-09-20 13:30:18,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:18" (3/3) ... [2019-09-20 13:30:18,071 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2019-09-20 13:30:18,081 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:18,090 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:18,107 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:18,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:18,136 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:18,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:18,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:18,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:18,137 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:18,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:18,137 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2019-09-20 13:30:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-20 13:30:18,188 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,189 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:18,191 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2019-09-20 13:30:18,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:18,569 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:18,592 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 2 states. [2019-09-20 13:30:18,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,624 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2019-09-20 13:30:18,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:18,625 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-20 13:30:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,638 INFO L225 Difference]: With dead ends: 163 [2019-09-20 13:30:18,639 INFO L226 Difference]: Without dead ends: 152 [2019-09-20 13:30:18,640 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-09-20 13:30:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2019-09-20 13:30:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-09-20 13:30:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2019-09-20 13:30:18,703 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2019-09-20 13:30:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,703 INFO L475 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2019-09-20 13:30:18,704 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2019-09-20 13:30:18,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:18,708 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,708 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:18,708 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2019-09-20 13:30:18,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,712 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:18,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:18,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:18,873 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:18,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:18,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:18,878 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 3 states. [2019-09-20 13:30:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:18,910 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2019-09-20 13:30:18,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:18,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-20 13:30:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:18,917 INFO L225 Difference]: With dead ends: 143 [2019-09-20 13:30:18,917 INFO L226 Difference]: Without dead ends: 143 [2019-09-20 13:30:18,919 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-09-20 13:30:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2019-09-20 13:30:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-09-20 13:30:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-09-20 13:30:18,951 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2019-09-20 13:30:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:18,952 INFO L475 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-09-20 13:30:18,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:18,953 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-09-20 13:30:18,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:18,957 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:18,957 INFO L407 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] [2019-09-20 13:30:18,957 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2019-09-20 13:30:18,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:18,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:18,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:18,961 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:19,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:19,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:19,080 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:19,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:19,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:19,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:19,082 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 7 states. [2019-09-20 13:30:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:19,494 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2019-09-20 13:30:19,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:19,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:19,497 INFO L225 Difference]: With dead ends: 143 [2019-09-20 13:30:19,497 INFO L226 Difference]: Without dead ends: 143 [2019-09-20 13:30:19,498 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-09-20 13:30:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2019-09-20 13:30:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-09-20 13:30:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2019-09-20 13:30:19,511 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2019-09-20 13:30:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:19,514 INFO L475 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2019-09-20 13:30:19,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2019-09-20 13:30:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-09-20 13:30:19,521 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:19,523 INFO L407 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] [2019-09-20 13:30:19,524 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:19,524 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2019-09-20 13:30:19,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:19,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:19,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:19,528 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:19,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:19,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:19,744 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:19,745 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:19,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:19,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:19,745 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 5 states. [2019-09-20 13:30:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,230 INFO L93 Difference]: Finished difference Result 252 states and 292 transitions. [2019-09-20 13:30:20,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:20,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2019-09-20 13:30:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,233 INFO L225 Difference]: With dead ends: 252 [2019-09-20 13:30:20,233 INFO L226 Difference]: Without dead ends: 252 [2019-09-20 13:30:20,233 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2019-09-20 13:30:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 233. [2019-09-20 13:30:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-20 13:30:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2019-09-20 13:30:20,263 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2019-09-20 13:30:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,264 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2019-09-20 13:30:20,264 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2019-09-20 13:30:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:20,269 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,270 INFO L407 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] [2019-09-20 13:30:20,270 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2019-09-20 13:30:20,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,276 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:20,434 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,436 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:20,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:20,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:20,437 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 6 states. [2019-09-20 13:30:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:20,642 INFO L93 Difference]: Finished difference Result 420 states and 479 transitions. [2019-09-20 13:30:20,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:20,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:20,647 INFO L225 Difference]: With dead ends: 420 [2019-09-20 13:30:20,648 INFO L226 Difference]: Without dead ends: 420 [2019-09-20 13:30:20,648 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2019-09-20 13:30:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 414. [2019-09-20 13:30:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2019-09-20 13:30:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2019-09-20 13:30:20,675 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2019-09-20 13:30:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:20,676 INFO L475 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2019-09-20 13:30:20,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2019-09-20 13:30:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-20 13:30:20,678 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:20,679 INFO L407 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] [2019-09-20 13:30:20,679 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2019-09-20 13:30:20,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:20,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:20,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:20,683 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:20,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:20,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:20,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:20,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:20,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:20,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:20,852 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 7 states. [2019-09-20 13:30:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,552 INFO L93 Difference]: Finished difference Result 445 states and 521 transitions. [2019-09-20 13:30:21,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:30:21,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-09-20 13:30:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,556 INFO L225 Difference]: With dead ends: 445 [2019-09-20 13:30:21,556 INFO L226 Difference]: Without dead ends: 445 [2019-09-20 13:30:21,556 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:30:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-09-20 13:30:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 413. [2019-09-20 13:30:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-09-20 13:30:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2019-09-20 13:30:21,577 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2019-09-20 13:30:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,577 INFO L475 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2019-09-20 13:30:21,577 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2019-09-20 13:30:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:21,579 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,579 INFO L407 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] [2019-09-20 13:30:21,580 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2019-09-20 13:30:21,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,583 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:21,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:21,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:21,664 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,665 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:21,666 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 6 states. [2019-09-20 13:30:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,694 INFO L93 Difference]: Finished difference Result 423 states and 479 transitions. [2019-09-20 13:30:21,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:21,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-09-20 13:30:21,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,698 INFO L225 Difference]: With dead ends: 423 [2019-09-20 13:30:21,698 INFO L226 Difference]: Without dead ends: 423 [2019-09-20 13:30:21,699 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:21,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-09-20 13:30:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2019-09-20 13:30:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-09-20 13:30:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2019-09-20 13:30:21,720 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2019-09-20 13:30:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,721 INFO L475 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2019-09-20 13:30:21,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2019-09-20 13:30:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:21,724 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,724 INFO L407 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] [2019-09-20 13:30:21,725 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2019-09-20 13:30:21,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,728 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:21,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:21,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:30:21,864 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:21,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:30:21,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:30:21,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:21,866 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 8 states. [2019-09-20 13:30:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:21,930 INFO L93 Difference]: Finished difference Result 437 states and 493 transitions. [2019-09-20 13:30:21,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:21,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-09-20 13:30:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:21,936 INFO L225 Difference]: With dead ends: 437 [2019-09-20 13:30:21,936 INFO L226 Difference]: Without dead ends: 437 [2019-09-20 13:30:21,937 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-09-20 13:30:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 431. [2019-09-20 13:30:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2019-09-20 13:30:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2019-09-20 13:30:21,967 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2019-09-20 13:30:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:21,968 INFO L475 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2019-09-20 13:30:21,969 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:30:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2019-09-20 13:30:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:21,973 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:21,973 INFO L407 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] [2019-09-20 13:30:21,974 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:21,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:21,974 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2019-09-20 13:30:21,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:21,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:21,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:21,978 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:22,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:22,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:30:22,118 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:22,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:30:22,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:30:22,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:22,120 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 4 states. [2019-09-20 13:30:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:22,418 INFO L93 Difference]: Finished difference Result 903 states and 1065 transitions. [2019-09-20 13:30:22,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:30:22,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-09-20 13:30:22,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:22,426 INFO L225 Difference]: With dead ends: 903 [2019-09-20 13:30:22,427 INFO L226 Difference]: Without dead ends: 903 [2019-09-20 13:30:22,428 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:30:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2019-09-20 13:30:22,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 573. [2019-09-20 13:30:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-09-20 13:30:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 642 transitions. [2019-09-20 13:30:22,461 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 642 transitions. Word has length 94 [2019-09-20 13:30:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:22,462 INFO L475 AbstractCegarLoop]: Abstraction has 573 states and 642 transitions. [2019-09-20 13:30:22,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:30:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 642 transitions. [2019-09-20 13:30:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:30:22,468 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:22,468 INFO L407 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] [2019-09-20 13:30:22,468 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2019-09-20 13:30:22,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:22,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:22,472 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:22,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:22,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:22,544 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:22,544 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:22,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:22,545 INFO L87 Difference]: Start difference. First operand 573 states and 642 transitions. Second operand 3 states. [2019-09-20 13:30:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:22,575 INFO L93 Difference]: Finished difference Result 895 states and 1018 transitions. [2019-09-20 13:30:22,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:22,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-09-20 13:30:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:22,582 INFO L225 Difference]: With dead ends: 895 [2019-09-20 13:30:22,582 INFO L226 Difference]: Without dead ends: 895 [2019-09-20 13:30:22,583 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-09-20 13:30:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 741. [2019-09-20 13:30:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-09-20 13:30:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 841 transitions. [2019-09-20 13:30:22,618 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 841 transitions. Word has length 98 [2019-09-20 13:30:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:22,619 INFO L475 AbstractCegarLoop]: Abstraction has 741 states and 841 transitions. [2019-09-20 13:30:22,619 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 841 transitions. [2019-09-20 13:30:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-09-20 13:30:22,625 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:22,626 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:22,626 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2019-09-20 13:30:22,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:22,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:22,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:22,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:22,629 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-20 13:30:22,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:22,772 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:22,773 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2019-09-20 13:30:22,775 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [159], [161], [164], [167], [169], [175], [178], [190], [192], [195], [197], [200], [203], [206], [214], [215], [216], [226], [227], [228], [230], [235], [237], [238], [246], [250], [256], [283], [284], [294], [297], [299], [302], [312], [315], [319], [320], [323], [338], [341], [342], [343], [344], [438], [439], [444], [446], [449], [457], [458], [459], [460], [461], [462], [463], [464], [465], [505], [506], [507], [508], [509], [510], [513], [514], [517], [518], [519], [520], [521], [523], [524], [527], [528], [529], [530], [535], [536], [537], [538], [549], [550], [553], [554], [555], [563], [564], [565] [2019-09-20 13:30:22,821 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:22,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:22,898 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:22,900 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 71 root evaluator evaluations with a maximum evaluation depth of 0. Performed 71 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:30:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:22,905 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:22,965 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:22,966 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:22,971 INFO L420 sIntCurrentIteration]: We unified 161 AI predicates to 161 [2019-09-20 13:30:22,972 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:22,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:22,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-09-20 13:30:22,973 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:22,974 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:22,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:22,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:22,974 INFO L87 Difference]: Start difference. First operand 741 states and 841 transitions. Second operand 2 states. [2019-09-20 13:30:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:22,975 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:22,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:22,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 162 [2019-09-20 13:30:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:22,976 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:22,976 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:22,979 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:22,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 162 [2019-09-20 13:30:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:22,983 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:22,983 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:22,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:22,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:22 BoogieIcfgContainer [2019-09-20 13:30:22,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:22,992 INFO L168 Benchmark]: Toolchain (without parser) took 7052.36 ms. Allocated memory was 130.5 MB in the beginning and 340.8 MB in the end (delta: 210.2 MB). Free memory was 85.0 MB in the beginning and 123.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 172.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:22,992 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 130.5 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:22,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.93 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 84.8 MB in the beginning and 161.1 MB in the end (delta: -76.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:22,994 INFO L168 Benchmark]: Boogie Preprocessor took 111.61 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 156.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:22,995 INFO L168 Benchmark]: RCFGBuilder took 1297.69 ms. Allocated memory was 198.2 MB in the beginning and 217.6 MB in the end (delta: 19.4 MB). Free memory was 156.6 MB in the beginning and 183.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:22,998 INFO L168 Benchmark]: TraceAbstraction took 4925.34 ms. Allocated memory was 217.6 MB in the beginning and 340.8 MB in the end (delta: 123.2 MB). Free memory was 183.6 MB in the beginning and 123.0 MB in the end (delta: 60.6 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:23,008 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 130.5 MB. Free memory was 104.6 MB in the beginning and 104.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.93 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 84.8 MB in the beginning and 161.1 MB in the end (delta: -76.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.61 ms. Allocated memory is still 198.2 MB. Free memory was 161.1 MB in the beginning and 156.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1297.69 ms. Allocated memory was 198.2 MB in the beginning and 217.6 MB in the end (delta: 19.4 MB). Free memory was 156.6 MB in the beginning and 183.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4925.34 ms. Allocated memory was 217.6 MB in the beginning and 340.8 MB in the end (delta: 123.2 MB). Free memory was 183.6 MB in the beginning and 123.0 MB in the end (delta: 60.6 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1002]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 254 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 11 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1803 SDtfs, 1047 SDslu, 3544 SDs, 0 SdLazy, 1165 SolverSat, 267 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=741occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8322981366459627 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 547 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 959 NumberOfCodeBlocks, 959 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 948 ConstructedInterpolants, 0 QuantifiedInterpolants, 146177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 52/60 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...