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_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:34,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:34,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:34,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:34,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:34,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:34,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:34,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:34,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:34,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:34,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:34,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:34,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:34,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:34,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:34,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:34,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:34,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:34,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:34,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:34,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:34,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:34,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:34,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:34,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:34,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:34,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:34,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:34,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:34,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:34,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:34,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:34,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:34,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:34,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:34,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:34,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:34,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:34,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:34,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:34,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:34,162 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 13:30:34,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:34,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:34,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:34,181 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:34,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:34,182 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:34,182 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:34,182 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:34,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:34,184 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:34,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:34,185 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:34,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:34,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:34,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:34,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:34,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:34,188 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:34,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:34,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:34,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:34,188 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:34,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:34,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:34,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:34,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:34,190 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:34,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:34,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:34,191 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:34,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:34,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:34,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:34,256 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:34,257 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:34,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-09-20 13:30:34,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f91929a/a9707413b5e14cb5bd06c8f66822c309/FLAG5f09652d2 [2019-09-20 13:30:34,836 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:34,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-09-20 13:30:34,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f91929a/a9707413b5e14cb5bd06c8f66822c309/FLAG5f09652d2 [2019-09-20 13:30:35,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f91929a/a9707413b5e14cb5bd06c8f66822c309 [2019-09-20 13:30:35,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:35,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:35,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:35,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:35,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:35,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c6722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35, skipping insertion in model container [2019-09-20 13:30:35,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,196 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:35,271 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:35,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,741 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:35,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,962 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:35,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35 WrapperNode [2019-09-20 13:30:35,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:35,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:35,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:35,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:35,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:36,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:36,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:36,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:36,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:36,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:36,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:36,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:36,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:36,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (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 13:30:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:36,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:36,119 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:36,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:36,120 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:36,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:36,124 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:30:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:37,245 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:37,245 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:37,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:37 BoogieIcfgContainer [2019-09-20 13:30:37,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:37,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:37,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:37,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:37,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:35" (1/3) ... [2019-09-20 13:30:37,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b279757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:37, skipping insertion in model container [2019-09-20 13:30:37,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (2/3) ... [2019-09-20 13:30:37,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b279757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:37, skipping insertion in model container [2019-09-20 13:30:37,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:37" (3/3) ... [2019-09-20 13:30:37,260 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2019-09-20 13:30:37,270 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:37,282 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:37,299 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:37,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:37,328 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:37,328 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:37,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:37,328 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:37,328 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:37,329 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:37,329 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-09-20 13:30:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:37,361 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,363 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 13:30:37,365 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1940108659, now seen corresponding path program 1 times [2019-09-20 13:30:37,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,756 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 13:30:37,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:37,763 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,769 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:37,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:37,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:37,796 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 2 states. [2019-09-20 13:30:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,835 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2019-09-20 13:30:37,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:37,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,852 INFO L225 Difference]: With dead ends: 171 [2019-09-20 13:30:37,852 INFO L226 Difference]: Without dead ends: 160 [2019-09-20 13:30:37,854 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 13:30:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-20 13:30:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-20 13:30:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-20 13:30:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2019-09-20 13:30:37,931 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 52 [2019-09-20 13:30:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,932 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2019-09-20 13:30:37,932 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2019-09-20 13:30:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:37,936 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,937 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 13:30:37,937 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1389083153, now seen corresponding path program 1 times [2019-09-20 13:30:37,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,941 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,103 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 13:30:38,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:38,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:38,104 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:38,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:38,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:38,106 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 3 states. [2019-09-20 13:30:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,131 INFO L93 Difference]: Finished difference Result 151 states and 178 transitions. [2019-09-20 13:30:38,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:38,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:38,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,137 INFO L225 Difference]: With dead ends: 151 [2019-09-20 13:30:38,139 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:30:38,140 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 13:30:38,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:30:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:30:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:30:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-09-20 13:30:38,158 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 53 [2019-09-20 13:30:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,158 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-09-20 13:30:38,158 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-09-20 13:30:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-20 13:30:38,161 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:38,162 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 13:30:38,162 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1857519430, now seen corresponding path program 1 times [2019-09-20 13:30:38,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:38,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:38,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,166 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,343 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 13:30:38,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:38,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:38,344 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,344 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:38,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:38,348 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 7 states. [2019-09-20 13:30:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,802 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2019-09-20 13:30:38,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:38,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-20 13:30:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,809 INFO L225 Difference]: With dead ends: 151 [2019-09-20 13:30:38,809 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:30:38,810 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 13:30:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:30:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:30:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:30:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 177 transitions. [2019-09-20 13:30:38,838 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 177 transitions. Word has length 58 [2019-09-20 13:30:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,840 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 177 transitions. [2019-09-20 13:30:38,840 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 177 transitions. [2019-09-20 13:30:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-09-20 13:30:38,850 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:38,850 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] [2019-09-20 13:30:38,850 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash -891726999, now seen corresponding path program 1 times [2019-09-20 13:30:38,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:38,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:38,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,855 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:39,036 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 13:30:39,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:39,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:39,037 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:39,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:39,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:39,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:39,038 INFO L87 Difference]: Start difference. First operand 151 states and 177 transitions. Second operand 5 states. [2019-09-20 13:30:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:39,678 INFO L93 Difference]: Finished difference Result 277 states and 319 transitions. [2019-09-20 13:30:39,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:39,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2019-09-20 13:30:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:39,682 INFO L225 Difference]: With dead ends: 277 [2019-09-20 13:30:39,682 INFO L226 Difference]: Without dead ends: 277 [2019-09-20 13:30:39,683 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-09-20 13:30:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 258. [2019-09-20 13:30:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2019-09-20 13:30:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 293 transitions. [2019-09-20 13:30:39,711 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 293 transitions. Word has length 76 [2019-09-20 13:30:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:39,712 INFO L475 AbstractCegarLoop]: Abstraction has 258 states and 293 transitions. [2019-09-20 13:30:39,712 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 293 transitions. [2019-09-20 13:30:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-20 13:30:39,719 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:39,720 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:39,720 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1078240077, now seen corresponding path program 1 times [2019-09-20 13:30:39,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:39,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:39,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,726 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:39,853 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 13:30:39,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:39,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:39,853 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:39,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:39,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:39,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:39,857 INFO L87 Difference]: Start difference. First operand 258 states and 293 transitions. Second operand 6 states. [2019-09-20 13:30:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,072 INFO L93 Difference]: Finished difference Result 399 states and 458 transitions. [2019-09-20 13:30:40,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:40,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2019-09-20 13:30:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,077 INFO L225 Difference]: With dead ends: 399 [2019-09-20 13:30:40,078 INFO L226 Difference]: Without dead ends: 399 [2019-09-20 13:30:40,078 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 13:30:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2019-09-20 13:30:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 395. [2019-09-20 13:30:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-09-20 13:30:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 454 transitions. [2019-09-20 13:30:40,122 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 454 transitions. Word has length 90 [2019-09-20 13:30:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,125 INFO L475 AbstractCegarLoop]: Abstraction has 395 states and 454 transitions. [2019-09-20 13:30:40,125 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 454 transitions. [2019-09-20 13:30:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:40,128 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,129 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,129 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2043608601, now seen corresponding path program 1 times [2019-09-20 13:30:40,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,134 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,309 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 13:30:40,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:40,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:40,311 INFO L87 Difference]: Start difference. First operand 395 states and 454 transitions. Second operand 6 states. [2019-09-20 13:30:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,554 INFO L93 Difference]: Finished difference Result 624 states and 735 transitions. [2019-09-20 13:30:40,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:40,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-09-20 13:30:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,559 INFO L225 Difference]: With dead ends: 624 [2019-09-20 13:30:40,559 INFO L226 Difference]: Without dead ends: 624 [2019-09-20 13:30:40,560 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 13:30:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-09-20 13:30:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 606. [2019-09-20 13:30:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2019-09-20 13:30:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 712 transitions. [2019-09-20 13:30:40,590 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 712 transitions. Word has length 94 [2019-09-20 13:30:40,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,591 INFO L475 AbstractCegarLoop]: Abstraction has 606 states and 712 transitions. [2019-09-20 13:30:40,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 712 transitions. [2019-09-20 13:30:40,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:40,593 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,593 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,593 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,594 INFO L82 PathProgramCache]: Analyzing trace with hash 315698408, now seen corresponding path program 1 times [2019-09-20 13:30:40,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,597 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,681 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 13:30:40,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:40,681 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:40,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:40,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:40,685 INFO L87 Difference]: Start difference. First operand 606 states and 712 transitions. Second operand 5 states. [2019-09-20 13:30:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,707 INFO L93 Difference]: Finished difference Result 616 states and 722 transitions. [2019-09-20 13:30:40,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:40,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2019-09-20 13:30:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,714 INFO L225 Difference]: With dead ends: 616 [2019-09-20 13:30:40,714 INFO L226 Difference]: Without dead ends: 616 [2019-09-20 13:30:40,714 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 13:30:40,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-09-20 13:30:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 610. [2019-09-20 13:30:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-09-20 13:30:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 715 transitions. [2019-09-20 13:30:40,747 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 715 transitions. Word has length 94 [2019-09-20 13:30:40,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,747 INFO L475 AbstractCegarLoop]: Abstraction has 610 states and 715 transitions. [2019-09-20 13:30:40,748 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 715 transitions. [2019-09-20 13:30:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-20 13:30:40,757 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,757 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,758 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 975229930, now seen corresponding path program 1 times [2019-09-20 13:30:40,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,766 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,869 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 13:30:40,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:40,870 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:40,871 INFO L87 Difference]: Start difference. First operand 610 states and 715 transitions. Second operand 9 states. [2019-09-20 13:30:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,925 INFO L93 Difference]: Finished difference Result 627 states and 738 transitions. [2019-09-20 13:30:40,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:40,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2019-09-20 13:30:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,929 INFO L225 Difference]: With dead ends: 627 [2019-09-20 13:30:40,929 INFO L226 Difference]: Without dead ends: 627 [2019-09-20 13:30:40,930 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 13:30:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-09-20 13:30:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 617. [2019-09-20 13:30:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-09-20 13:30:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 722 transitions. [2019-09-20 13:30:40,953 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 722 transitions. Word has length 94 [2019-09-20 13:30:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,954 INFO L475 AbstractCegarLoop]: Abstraction has 617 states and 722 transitions. [2019-09-20 13:30:40,954 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 722 transitions. [2019-09-20 13:30:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-20 13:30:40,956 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,957 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] [2019-09-20 13:30:40,957 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1765139220, now seen corresponding path program 1 times [2019-09-20 13:30:40,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,960 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:41,105 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 13:30:41,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:41,106 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:41,107 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 107 with the following transitions: [2019-09-20 13:30:41,110 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [167], [169], [175], [178], [201], [203], [206], [211], [212], [213], [214], [216], [221], [223], [224], [225], [226], [232], [236], [278], [281], [283], [286], [296], [299], [303], [304], [307], [308], [323], [326], [327], [328], [351], [353], [354], [421], [422], [432], [434], [439], [441], [444], [446], [451], [458], [466], [467], [468], [469], [470], [471], [472], [473], [474], [514], [515], [516], [517], [522], [526], [527], [530], [531], [534], [535], [536], [542], [543], [544], [545], [556], [557], [560], [562], [563], [568], [569], [570], [571], [572], [573], [574], [576], [577], [578] [2019-09-20 13:30:41,159 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:41,159 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:41,249 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:41,251 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:30:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:41,256 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:41,345 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:41,345 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:41,355 INFO L420 sIntCurrentIteration]: We unified 105 AI predicates to 105 [2019-09-20 13:30:41,356 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:41,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:41,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:30:41,357 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:41,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:41,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:41,359 INFO L87 Difference]: Start difference. First operand 617 states and 722 transitions. Second operand 2 states. [2019-09-20 13:30:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:41,359 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:41,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:41,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 106 [2019-09-20 13:30:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:41,360 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:41,360 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:41,360 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 105 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 13:30:41,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:41,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2019-09-20 13:30:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:41,362 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:41,362 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:41,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:41,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:41 BoogieIcfgContainer [2019-09-20 13:30:41,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:41,374 INFO L168 Benchmark]: Toolchain (without parser) took 6198.83 ms. Allocated memory was 131.1 MB in the beginning and 340.8 MB in the end (delta: 209.7 MB). Free memory was 84.4 MB in the beginning and 277.7 MB in the end (delta: -193.4 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,376 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.34 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 84.1 MB in the beginning and 162.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,380 INFO L168 Benchmark]: Boogie Preprocessor took 92.77 ms. Allocated memory is still 199.2 MB. Free memory was 162.8 MB in the beginning and 158.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,382 INFO L168 Benchmark]: RCFGBuilder took 1192.81 ms. Allocated memory was 199.2 MB in the beginning and 219.2 MB in the end (delta: 19.9 MB). Free memory was 158.3 MB in the beginning and 185.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,389 INFO L168 Benchmark]: TraceAbstraction took 4119.37 ms. Allocated memory was 219.2 MB in the beginning and 340.8 MB in the end (delta: 121.6 MB). Free memory was 184.0 MB in the beginning and 277.7 MB in the end (delta: -93.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:41,398 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 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 789.34 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 84.1 MB in the beginning and 162.8 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.77 ms. Allocated memory is still 199.2 MB. Free memory was 162.8 MB in the beginning and 158.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1192.81 ms. Allocated memory was 199.2 MB in the beginning and 219.2 MB in the end (delta: 19.9 MB). Free memory was 158.3 MB in the beginning and 185.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4119.37 ms. Allocated memory was 219.2 MB in the beginning and 340.8 MB in the end (delta: 121.6 MB). Free memory was 184.0 MB in the beginning and 277.7 MB in the end (delta: -93.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 259 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1540 SDtfs, 758 SDslu, 3868 SDs, 0 SdLazy, 730 SolverSat, 246 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=617occurred 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, 1.0857142857142856 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, 0.9s InterpolantComputationTime, 717 NumberOfCodeBlocks, 717 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 708 ConstructedInterpolants, 0 QuantifiedInterpolants, 96243 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...