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_spec5_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:30,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:30,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:30,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:30,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:30,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:30,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:30,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:30,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:30,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:30,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:30,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:30,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:30,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:30,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:30,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:30,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:30,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:30,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:30,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:30,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:30,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:30,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:30,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:30,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:30,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:30,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:30,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:30,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:30,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:30,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:30,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:30,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:30,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:30,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:30,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:30,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:30,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:30,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:30,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:30,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:30,175 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 13:31:30,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:30,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:30,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:30,203 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:30,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:30,204 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:30,204 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:30,204 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:30,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:30,204 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:30,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:30,207 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:30,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:30,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:30,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:30,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:30,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:30,209 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:30,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:30,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:30,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:30,209 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:30,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:30,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:30,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:30,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:30,211 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:30,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:30,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:30,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:30,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:30,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:30,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:30,290 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:30,291 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:30,292 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2019-09-20 13:31:30,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812fdea85/44f60d7008fc4214a0ad2cfa3dd07201/FLAG62ff55414 [2019-09-20 13:31:30,925 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:30,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2019-09-20 13:31:30,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812fdea85/44f60d7008fc4214a0ad2cfa3dd07201/FLAG62ff55414 [2019-09-20 13:31:31,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812fdea85/44f60d7008fc4214a0ad2cfa3dd07201 [2019-09-20 13:31:31,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:31,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:31,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:31,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:31,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:31,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3029f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31, skipping insertion in model container [2019-09-20 13:31:31,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,228 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:31,289 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:31,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,725 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:31,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,919 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:31,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31 WrapperNode [2019-09-20 13:31:31,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:31,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:31,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:31,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:31,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:32,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:32,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:32,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:32,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:32,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:32,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:32,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (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 13:31:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:32,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:32,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:32,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:32,084 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:32,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:32,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:32,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:32,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:32,087 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:32,087 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:32,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:32,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:32,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:32,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:32,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:33,127 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:33,128 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:33,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:33 BoogieIcfgContainer [2019-09-20 13:31:33,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:33,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:33,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:33,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:33,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:31" (1/3) ... [2019-09-20 13:31:33,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c88ec5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:33, skipping insertion in model container [2019-09-20 13:31:33,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (2/3) ... [2019-09-20 13:31:33,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c88ec5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:33, skipping insertion in model container [2019-09-20 13:31:33,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:33" (3/3) ... [2019-09-20 13:31:33,139 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2019-09-20 13:31:33,150 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:33,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:33,178 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:33,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:33,207 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:33,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:33,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:33,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:33,209 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:33,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:33,209 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2019-09-20 13:31:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:33,256 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,257 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] [2019-09-20 13:31:33,262 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1834170296, now seen corresponding path program 1 times [2019-09-20 13:31:33,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,323 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:33,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:33,665 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,674 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:33,694 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 2 states. [2019-09-20 13:31:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,747 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2019-09-20 13:31:33,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:33,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,763 INFO L225 Difference]: With dead ends: 154 [2019-09-20 13:31:33,763 INFO L226 Difference]: Without dead ends: 143 [2019-09-20 13:31:33,765 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 13:31:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-09-20 13:31:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2019-09-20 13:31:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-09-20 13:31:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2019-09-20 13:31:33,821 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 59 [2019-09-20 13:31:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,821 INFO L475 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2019-09-20 13:31:33,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2019-09-20 13:31:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:33,826 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,827 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] [2019-09-20 13:31:33,828 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1514103119, now seen corresponding path program 1 times [2019-09-20 13:31:33,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,833 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:34,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:34,001 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:34,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:34,005 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 3 states. [2019-09-20 13:31:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,037 INFO L93 Difference]: Finished difference Result 134 states and 153 transitions. [2019-09-20 13:31:34,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:34,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:34,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,043 INFO L225 Difference]: With dead ends: 134 [2019-09-20 13:31:34,043 INFO L226 Difference]: Without dead ends: 134 [2019-09-20 13:31:34,044 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 13:31:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-09-20 13:31:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-09-20 13:31:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-09-20 13:31:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2019-09-20 13:31:34,057 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 60 [2019-09-20 13:31:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,058 INFO L475 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2019-09-20 13:31:34,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2019-09-20 13:31:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:34,060 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,061 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] [2019-09-20 13:31:34,061 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1793464780, now seen corresponding path program 1 times [2019-09-20 13:31:34,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,065 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:34,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:34,238 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,240 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:34,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:34,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:34,241 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 7 states. [2019-09-20 13:31:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,819 INFO L93 Difference]: Finished difference Result 296 states and 350 transitions. [2019-09-20 13:31:34,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:34,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,826 INFO L225 Difference]: With dead ends: 296 [2019-09-20 13:31:34,826 INFO L226 Difference]: Without dead ends: 296 [2019-09-20 13:31:34,827 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 13:31:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-09-20 13:31:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 272. [2019-09-20 13:31:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2019-09-20 13:31:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 322 transitions. [2019-09-20 13:31:34,887 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 322 transitions. Word has length 65 [2019-09-20 13:31:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,888 INFO L475 AbstractCegarLoop]: Abstraction has 272 states and 322 transitions. [2019-09-20 13:31:34,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 322 transitions. [2019-09-20 13:31:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:34,895 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,895 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] [2019-09-20 13:31:34,896 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash -10520395, now seen corresponding path program 1 times [2019-09-20 13:31:34,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,899 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:35,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:35,056 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,056 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:35,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:35,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:35,057 INFO L87 Difference]: Start difference. First operand 272 states and 322 transitions. Second operand 7 states. [2019-09-20 13:31:35,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,849 INFO L93 Difference]: Finished difference Result 438 states and 539 transitions. [2019-09-20 13:31:35,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:35,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,854 INFO L225 Difference]: With dead ends: 438 [2019-09-20 13:31:35,854 INFO L226 Difference]: Without dead ends: 438 [2019-09-20 13:31:35,855 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 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 13:31:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2019-09-20 13:31:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 390. [2019-09-20 13:31:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2019-09-20 13:31:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 462 transitions. [2019-09-20 13:31:35,887 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 462 transitions. Word has length 70 [2019-09-20 13:31:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,888 INFO L475 AbstractCegarLoop]: Abstraction has 390 states and 462 transitions. [2019-09-20 13:31:35,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 462 transitions. [2019-09-20 13:31:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:35,892 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,892 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:35,892 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash -762155168, now seen corresponding path program 1 times [2019-09-20 13:31:35,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,896 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:36,010 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,012 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:36,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:36,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:36,013 INFO L87 Difference]: Start difference. First operand 390 states and 462 transitions. Second operand 4 states. [2019-09-20 13:31:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,327 INFO L93 Difference]: Finished difference Result 1076 states and 1332 transitions. [2019-09-20 13:31:36,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:36,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-20 13:31:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,334 INFO L225 Difference]: With dead ends: 1076 [2019-09-20 13:31:36,335 INFO L226 Difference]: Without dead ends: 1076 [2019-09-20 13:31:36,335 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 13:31:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2019-09-20 13:31:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1056. [2019-09-20 13:31:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-09-20 13:31:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1293 transitions. [2019-09-20 13:31:36,386 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1293 transitions. Word has length 103 [2019-09-20 13:31:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,387 INFO L475 AbstractCegarLoop]: Abstraction has 1056 states and 1293 transitions. [2019-09-20 13:31:36,387 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1293 transitions. [2019-09-20 13:31:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:36,391 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,391 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:36,391 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1731736191, now seen corresponding path program 1 times [2019-09-20 13:31:36,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,394 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:36,492 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:36,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:36,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:36,493 INFO L87 Difference]: Start difference. First operand 1056 states and 1293 transitions. Second operand 6 states. [2019-09-20 13:31:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,545 INFO L93 Difference]: Finished difference Result 1098 states and 1345 transitions. [2019-09-20 13:31:36,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:36,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-20 13:31:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,555 INFO L225 Difference]: With dead ends: 1098 [2019-09-20 13:31:36,555 INFO L226 Difference]: Without dead ends: 1098 [2019-09-20 13:31:36,555 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 13:31:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2019-09-20 13:31:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1086. [2019-09-20 13:31:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1086 states. [2019-09-20 13:31:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1325 transitions. [2019-09-20 13:31:36,611 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1325 transitions. Word has length 103 [2019-09-20 13:31:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,612 INFO L475 AbstractCegarLoop]: Abstraction has 1086 states and 1325 transitions. [2019-09-20 13:31:36,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1325 transitions. [2019-09-20 13:31:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-20 13:31:36,617 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,617 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:36,617 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash 513843263, now seen corresponding path program 1 times [2019-09-20 13:31:36,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,623 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:36,735 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:36,738 INFO L87 Difference]: Start difference. First operand 1086 states and 1325 transitions. Second operand 8 states. [2019-09-20 13:31:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,773 INFO L93 Difference]: Finished difference Result 883 states and 1064 transitions. [2019-09-20 13:31:36,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:36,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-20 13:31:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,779 INFO L225 Difference]: With dead ends: 883 [2019-09-20 13:31:36,779 INFO L226 Difference]: Without dead ends: 883 [2019-09-20 13:31:36,780 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 13:31:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-09-20 13:31:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2019-09-20 13:31:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-09-20 13:31:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1064 transitions. [2019-09-20 13:31:36,817 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1064 transitions. Word has length 103 [2019-09-20 13:31:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,817 INFO L475 AbstractCegarLoop]: Abstraction has 883 states and 1064 transitions. [2019-09-20 13:31:36,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1064 transitions. [2019-09-20 13:31:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:36,820 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:36,821 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1595809660, now seen corresponding path program 1 times [2019-09-20 13:31:36,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,824 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:37,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:37,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:37,042 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:37,043 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:37,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:37,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:37,044 INFO L87 Difference]: Start difference. First operand 883 states and 1064 transitions. Second operand 9 states. [2019-09-20 13:31:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,200 INFO L93 Difference]: Finished difference Result 1755 states and 2116 transitions. [2019-09-20 13:31:38,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:38,201 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2019-09-20 13:31:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,211 INFO L225 Difference]: With dead ends: 1755 [2019-09-20 13:31:38,211 INFO L226 Difference]: Without dead ends: 1755 [2019-09-20 13:31:38,212 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2019-09-20 13:31:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1552. [2019-09-20 13:31:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2019-09-20 13:31:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1852 transitions. [2019-09-20 13:31:38,293 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1852 transitions. Word has length 107 [2019-09-20 13:31:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:38,294 INFO L475 AbstractCegarLoop]: Abstraction has 1552 states and 1852 transitions. [2019-09-20 13:31:38,294 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1852 transitions. [2019-09-20 13:31:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-20 13:31:38,298 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:38,298 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:38,298 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 439174861, now seen corresponding path program 1 times [2019-09-20 13:31:38,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:38,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:38,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,302 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-20 13:31:38,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:38,514 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:38,516 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2019-09-20 13:31:38,519 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [173], [179], [196], [198], [203], [206], [207], [208], [209], [211], [216], [218], [219], [220], [221], [225], [228], [232], [238], [267], [271], [276], [280], [281], [284], [285], [286], [288], [289], [290], [292], [295], [297], [300], [303], [312], [314], [315], [316], [340], [342], [343], [361], [362], [412], [413], [423], [431], [432], [433], [434], [435], [436], [437], [438], [439], [473], [474], [475], [476], [479], [480], [481], [482], [489], [490], [493], [494], [495], [496], [497], [498], [499], [500], [501], [502], [503], [504], [505], [506], [511], [512], [513], [514], [515], [516], [517], [521], [522], [523], [525], [526], [531], [532], [533] [2019-09-20 13:31:38,563 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:38,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:38,650 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:38,652 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 128 variables. [2019-09-20 13:31:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,657 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:38,759 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:38,760 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:38,767 INFO L420 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2019-09-20 13:31:38,768 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:38,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:38,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:38,769 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,771 INFO L87 Difference]: Start difference. First operand 1552 states and 1852 transitions. Second operand 2 states. [2019-09-20 13:31:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,771 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:38,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:38,771 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 151 [2019-09-20 13:31:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,772 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:38,772 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:38,772 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 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 13:31:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:38,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2019-09-20 13:31:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:38,774 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:38,774 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:38,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:38,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:38,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:38 BoogieIcfgContainer [2019-09-20 13:31:38,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:38,783 INFO L168 Benchmark]: Toolchain (without parser) took 7569.87 ms. Allocated memory was 132.6 MB in the beginning and 333.4 MB in the end (delta: 200.8 MB). Free memory was 86.7 MB in the beginning and 244.2 MB in the end (delta: -157.5 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,784 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.06 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.5 MB in the beginning and 162.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,788 INFO L168 Benchmark]: Boogie Preprocessor took 92.14 ms. Allocated memory is still 199.2 MB. Free memory was 162.9 MB in the beginning and 159.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,790 INFO L168 Benchmark]: RCFGBuilder took 1116.43 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 158.5 MB in the beginning and 189.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,795 INFO L168 Benchmark]: TraceAbstraction took 5648.91 ms. Allocated memory was 222.8 MB in the beginning and 333.4 MB in the end (delta: 110.6 MB). Free memory was 189.3 MB in the beginning and 244.2 MB in the end (delta: -55.0 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,802 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.06 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.5 MB in the beginning and 162.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.14 ms. Allocated memory is still 199.2 MB. Free memory was 162.9 MB in the beginning and 159.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1116.43 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 158.5 MB in the beginning and 189.3 MB in the end (delta: -30.8 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5648.91 ms. Allocated memory was 222.8 MB in the beginning and 333.4 MB in the end (delta: 110.6 MB). Free memory was 189.3 MB in the beginning and 244.2 MB in the end (delta: -55.0 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 922]: 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 42 procedures, 242 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1474 SDtfs, 1093 SDslu, 3263 SDs, 0 SdLazy, 1617 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1552occurred 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, 0.86 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 307 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 821 NumberOfCodeBlocks, 821 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 812 ConstructedInterpolants, 0 QuantifiedInterpolants, 130382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 58/63 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...