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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:28,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:28,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:28,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:28,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:28,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:28,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:28,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:28,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:28,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:28,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:28,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:28,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:28,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:28,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:28,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:28,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:28,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:28,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:28,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:28,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:28,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:28,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:28,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:28,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:28,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:28,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:28,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:28,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:28,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:28,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:28,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:28,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:28,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:28,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:28,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:29,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:29,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:29,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:29,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:29,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:29,003 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 13:30:29,026 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:29,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:29,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:29,028 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:29,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:29,029 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:29,029 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:29,029 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:29,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:29,030 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:29,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:29,032 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:29,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:29,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:29,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:29,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:29,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:29,033 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:29,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:29,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:29,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:29,034 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:29,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:29,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:29,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:29,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:29,036 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:29,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:29,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:29,036 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:29,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:29,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:29,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:29,116 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:29,117 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:29,118 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-09-20 13:30:29,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b3d9dc8/ea8d9e1fbda34811b2fb0fb144643ed8/FLAG9564ef2a2 [2019-09-20 13:30:29,754 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:29,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-09-20 13:30:29,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b3d9dc8/ea8d9e1fbda34811b2fb0fb144643ed8/FLAG9564ef2a2 [2019-09-20 13:30:30,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b3d9dc8/ea8d9e1fbda34811b2fb0fb144643ed8 [2019-09-20 13:30:30,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:30,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:30,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:30,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:30,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:30,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ade0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30, skipping insertion in model container [2019-09-20 13:30:30,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,097 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:30,156 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:30,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:30,725 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:30,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:30,869 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30 WrapperNode [2019-09-20 13:30:30,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:30,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:30,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:30,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:30,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:31,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:31,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:31,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:31,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:31,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:31,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:31,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (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 13:30:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:31,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:30:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:31,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:32,233 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:32,233 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:32,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:32 BoogieIcfgContainer [2019-09-20 13:30:32,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:32,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:32,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:32,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:32,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:30" (1/3) ... [2019-09-20 13:30:32,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:32, skipping insertion in model container [2019-09-20 13:30:32,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (2/3) ... [2019-09-20 13:30:32,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:32, skipping insertion in model container [2019-09-20 13:30:32,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:32" (3/3) ... [2019-09-20 13:30:32,246 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-09-20 13:30:32,273 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:32,284 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:32,300 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:32,324 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:32,324 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:32,324 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:32,324 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:32,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:32,324 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:32,325 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:32,325 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-09-20 13:30:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:32,361 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:32,362 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 13:30:32,365 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:32,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2019-09-20 13:30:32,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:32,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:32,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,441 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:32,820 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 13:30:32,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:32,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:32,823 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:32,830 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:32,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:32,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:32,847 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2019-09-20 13:30:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:32,889 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2019-09-20 13:30:32,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:32,893 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:32,910 INFO L225 Difference]: With dead ends: 138 [2019-09-20 13:30:32,919 INFO L226 Difference]: Without dead ends: 127 [2019-09-20 13:30:32,924 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 13:30:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-20 13:30:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-09-20 13:30:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-09-20 13:30:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-09-20 13:30:32,973 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2019-09-20 13:30:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:32,973 INFO L475 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-09-20 13:30:32,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-09-20 13:30:32,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:32,977 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:32,978 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] [2019-09-20 13:30:32,978 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:32,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:32,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2019-09-20 13:30:32,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:32,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:32,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,982 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:33,109 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 13:30:33,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:33,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:33,110 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:33,112 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:33,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:33,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:33,114 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 3 states. [2019-09-20 13:30:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:33,150 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2019-09-20 13:30:33,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:33,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:33,156 INFO L225 Difference]: With dead ends: 118 [2019-09-20 13:30:33,156 INFO L226 Difference]: Without dead ends: 118 [2019-09-20 13:30:33,157 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 13:30:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-09-20 13:30:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-09-20 13:30:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-09-20 13:30:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2019-09-20 13:30:33,183 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2019-09-20 13:30:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:33,185 INFO L475 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2019-09-20 13:30:33,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2019-09-20 13:30:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-20 13:30:33,188 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:33,188 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] [2019-09-20 13:30:33,188 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2019-09-20 13:30:33,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:33,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:33,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,192 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:33,323 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 13:30:33,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:33,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:33,324 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:33,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:33,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:33,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:33,328 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 7 states. [2019-09-20 13:30:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:33,663 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2019-09-20 13:30:33,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:33,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-20 13:30:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:33,666 INFO L225 Difference]: With dead ends: 118 [2019-09-20 13:30:33,666 INFO L226 Difference]: Without dead ends: 118 [2019-09-20 13:30:33,666 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 13:30:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-09-20 13:30:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-09-20 13:30:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-09-20 13:30:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-09-20 13:30:33,675 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2019-09-20 13:30:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:33,676 INFO L475 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-09-20 13:30:33,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-09-20 13:30:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-20 13:30:33,678 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:33,678 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] [2019-09-20 13:30:33,679 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2019-09-20 13:30:33,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:33,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:33,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,683 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:33,804 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 13:30:33,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:33,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:33,805 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:33,805 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:33,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:33,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:33,806 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 5 states. [2019-09-20 13:30:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,350 INFO L93 Difference]: Finished difference Result 220 states and 256 transitions. [2019-09-20 13:30:34,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:34,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-20 13:30:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,353 INFO L225 Difference]: With dead ends: 220 [2019-09-20 13:30:34,353 INFO L226 Difference]: Without dead ends: 220 [2019-09-20 13:30:34,354 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-09-20 13:30:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 201. [2019-09-20 13:30:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-09-20 13:30:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2019-09-20 13:30:34,372 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2019-09-20 13:30:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,372 INFO L475 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2019-09-20 13:30:34,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2019-09-20 13:30:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-20 13:30:34,375 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,375 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] [2019-09-20 13:30:34,375 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2019-09-20 13:30:34,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,379 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,480 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 13:30:34,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:34,482 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,484 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:34,485 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 6 states. [2019-09-20 13:30:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,711 INFO L93 Difference]: Finished difference Result 328 states and 380 transitions. [2019-09-20 13:30:34,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:34,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-20 13:30:34,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,716 INFO L225 Difference]: With dead ends: 328 [2019-09-20 13:30:34,716 INFO L226 Difference]: Without dead ends: 328 [2019-09-20 13:30:34,717 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 13:30:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-20 13:30:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2019-09-20 13:30:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-09-20 13:30:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 376 transitions. [2019-09-20 13:30:34,759 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 376 transitions. Word has length 80 [2019-09-20 13:30:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,760 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 376 transitions. [2019-09-20 13:30:34,760 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 376 transitions. [2019-09-20 13:30:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:30:34,762 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,762 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] [2019-09-20 13:30:34,764 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2019-09-20 13:30:34,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,768 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,901 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 13:30:34,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:34,901 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:34,903 INFO L87 Difference]: Start difference. First operand 324 states and 376 transitions. Second operand 6 states. [2019-09-20 13:30:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:35,291 INFO L93 Difference]: Finished difference Result 496 states and 586 transitions. [2019-09-20 13:30:35,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:35,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-20 13:30:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:35,296 INFO L225 Difference]: With dead ends: 496 [2019-09-20 13:30:35,296 INFO L226 Difference]: Without dead ends: 496 [2019-09-20 13:30:35,297 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-09-20 13:30:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 478. [2019-09-20 13:30:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-09-20 13:30:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 565 transitions. [2019-09-20 13:30:35,332 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 565 transitions. Word has length 84 [2019-09-20 13:30:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:35,333 INFO L475 AbstractCegarLoop]: Abstraction has 478 states and 565 transitions. [2019-09-20 13:30:35,333 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 565 transitions. [2019-09-20 13:30:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:30:35,338 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:35,338 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] [2019-09-20 13:30:35,339 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2019-09-20 13:30:35,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:35,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:35,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,343 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:35,455 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 13:30:35,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:35,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:35,456 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:35,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:35,458 INFO L87 Difference]: Start difference. First operand 478 states and 565 transitions. Second operand 5 states. [2019-09-20 13:30:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:35,479 INFO L93 Difference]: Finished difference Result 488 states and 575 transitions. [2019-09-20 13:30:35,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:35,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-09-20 13:30:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:35,484 INFO L225 Difference]: With dead ends: 488 [2019-09-20 13:30:35,484 INFO L226 Difference]: Without dead ends: 488 [2019-09-20 13:30:35,484 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2019-09-20 13:30:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 482. [2019-09-20 13:30:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-09-20 13:30:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 568 transitions. [2019-09-20 13:30:35,510 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 568 transitions. Word has length 84 [2019-09-20 13:30:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:35,511 INFO L475 AbstractCegarLoop]: Abstraction has 482 states and 568 transitions. [2019-09-20 13:30:35,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 568 transitions. [2019-09-20 13:30:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:30:35,514 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:35,514 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] [2019-09-20 13:30:35,514 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2019-09-20 13:30:35,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:35,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:35,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,518 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:35,645 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 13:30:35,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:35,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:35,645 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:35,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:35,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:35,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:35,650 INFO L87 Difference]: Start difference. First operand 482 states and 568 transitions. Second operand 9 states. [2019-09-20 13:30:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:35,713 INFO L93 Difference]: Finished difference Result 499 states and 591 transitions. [2019-09-20 13:30:35,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:35,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-09-20 13:30:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:35,721 INFO L225 Difference]: With dead ends: 499 [2019-09-20 13:30:35,721 INFO L226 Difference]: Without dead ends: 499 [2019-09-20 13:30:35,722 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-20 13:30:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 489. [2019-09-20 13:30:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-09-20 13:30:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 575 transitions. [2019-09-20 13:30:35,744 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 575 transitions. Word has length 84 [2019-09-20 13:30:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:35,745 INFO L475 AbstractCegarLoop]: Abstraction has 489 states and 575 transitions. [2019-09-20 13:30:35,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 575 transitions. [2019-09-20 13:30:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-20 13:30:35,749 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:35,749 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:35,750 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2019-09-20 13:30:35,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:35,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:35,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:35,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:35,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:35,861 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:35,862 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 97 with the following transitions: [2019-09-20 13:30:35,865 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [99], [103], [104], [105], [108], [110], [113], [123], [125], [134], [138], [142], [145], [150], [156], [158], [164], [167], [186], [188], [191], [196], [197], [199], [204], [206], [207], [208], [209], [215], [219], [252], [253], [265], [269], [270], [273], [274], [275], [298], [300], [301], [370], [371], [381], [383], [388], [390], [393], [395], [400], [407], [415], [416], [417], [418], [419], [420], [421], [422], [423], [455], [456], [457], [458], [463], [464], [469], [473], [474], [477], [478], [481], [482], [483], [491], [493], [494], [499], [500], [501], [502], [503], [504], [505], [507], [508], [509] [2019-09-20 13:30:35,911 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:35,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:36,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:36,038 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:30:36,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:36,044 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:36,127 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:36,127 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:36,137 INFO L420 sIntCurrentIteration]: We unified 95 AI predicates to 95 [2019-09-20 13:30:36,138 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:36,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:36,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:30:36,139 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:36,140 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:36,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:36,141 INFO L87 Difference]: Start difference. First operand 489 states and 575 transitions. Second operand 2 states. [2019-09-20 13:30:36,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:36,142 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:36,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:36,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 96 [2019-09-20 13:30:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:36,142 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:36,143 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:36,143 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 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 13:30:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:36,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2019-09-20 13:30:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:36,144 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:36,145 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:36,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:36,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:36 BoogieIcfgContainer [2019-09-20 13:30:36,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:36,155 INFO L168 Benchmark]: Toolchain (without parser) took 6072.83 ms. Allocated memory was 132.6 MB in the beginning and 266.9 MB in the end (delta: 134.2 MB). Free memory was 83.8 MB in the beginning and 104.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 113.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,156 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.49 ms. Allocated memory was 132.6 MB in the beginning and 198.7 MB in the end (delta: 66.1 MB). Free memory was 83.6 MB in the beginning and 164.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,160 INFO L168 Benchmark]: Boogie Preprocessor took 152.68 ms. Allocated memory is still 198.7 MB. Free memory was 164.3 MB in the beginning and 159.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,161 INFO L168 Benchmark]: RCFGBuilder took 1211.08 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 75.5 MB in the end (delta: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,168 INFO L168 Benchmark]: TraceAbstraction took 3915.12 ms. Allocated memory was 198.7 MB in the beginning and 266.9 MB in the end (delta: 68.2 MB). Free memory was 74.9 MB in the beginning and 104.4 MB in the end (delta: -29.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:36,175 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.6 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 789.49 ms. Allocated memory was 132.6 MB in the beginning and 198.7 MB in the end (delta: 66.1 MB). Free memory was 83.6 MB in the beginning and 164.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.68 ms. Allocated memory is still 198.7 MB. Free memory was 164.3 MB in the beginning and 159.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1211.08 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 75.5 MB in the end (delta: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3915.12 ms. Allocated memory was 198.7 MB in the beginning and 266.9 MB in the end (delta: 68.2 MB). Free memory was 74.9 MB in the beginning and 104.4 MB in the end (delta: -29.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 497]: 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 39 procedures, 229 locations, 1 error locations. SAFE Result, 3.8s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1168 SDtfs, 519 SDslu, 2877 SDs, 0 SdLazy, 602 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=489occurred in iteration=8, 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, 1.1789473684210525 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 78557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...