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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:40:21,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:40:21,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:40:21,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:40:21,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:40:21,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:40:21,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:40:21,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:40:21,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:40:21,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:40:21,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:40:21,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:40:21,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:40:21,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:40:21,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:40:21,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:40:21,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:40:21,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:40:21,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:40:21,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:40:21,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:40:21,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:40:21,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:40:21,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:40:21,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:40:21,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:40:21,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:40:21,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:40:21,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:40:21,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:40:21,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:40:21,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:40:21,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:40:21,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:40:21,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:40:21,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:40:21,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:40:21,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:40:21,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:40:21,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:40:21,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:40:21,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:40:21,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:40:21,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:40:21,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:40:21,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:40:21,176 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:40:21,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:40:21,176 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:40:21,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:40:21,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:40:21,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:40:21,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:40:21,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:40:21,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:40:21,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:40:21,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:40:21,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:40:21,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:40:21,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:40:21,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:40:21,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:40:21,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:40:21,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:40:21,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:40:21,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:40:21,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:40:21,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:40:21,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:40:21,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:40:21,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:40:21,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:40:21,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:40:21,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:40:21,501 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:40:21,501 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:40:21,502 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-10-14 23:40:21,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a342b8dd/59ad4f49e2cd45fbac325a5f1fbf6f2c/FLAGc38912077 [2019-10-14 23:40:22,136 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:40:22,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-10-14 23:40:22,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a342b8dd/59ad4f49e2cd45fbac325a5f1fbf6f2c/FLAGc38912077 [2019-10-14 23:40:22,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a342b8dd/59ad4f49e2cd45fbac325a5f1fbf6f2c [2019-10-14 23:40:22,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:40:22,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:40:22,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:40:22,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:40:22,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:40:22,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:40:22" (1/1) ... [2019-10-14 23:40:22,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de94fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:22, skipping insertion in model container [2019-10-14 23:40:22,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:40:22" (1/1) ... [2019-10-14 23:40:22,461 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:40:22,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:40:22,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:40:22,932 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:40:23,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:40:23,094 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:40:23,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23 WrapperNode [2019-10-14 23:40:23,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:40:23,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:40:23,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:40:23,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:40:23,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (1/1) ... [2019-10-14 23:40:23,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:40:23,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:40:23,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:40:23,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:40:23,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (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 [2019-10-14 23:40:23,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:40:23,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:40:23,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:40:23,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:40:23,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:40:23,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:40:23,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:40:23,249 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:40:23,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:40:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:40:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:40:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:40:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:40:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:40:23,252 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:40:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:40:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:40:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:40:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:40:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:40:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:40:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-14 23:40:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-14 23:40:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-14 23:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:40:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:40:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:40:23,257 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:40:23,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:40:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:40:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:40:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:40:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:40:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:40:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:40:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:40:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:40:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:40:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:40:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:40:24,389 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:40:24,391 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:40:24,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:40:24 BoogieIcfgContainer [2019-10-14 23:40:24,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:40:24,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:40:24,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:40:24,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:40:24,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:40:22" (1/3) ... [2019-10-14 23:40:24,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f8a614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:40:24, skipping insertion in model container [2019-10-14 23:40:24,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:40:23" (2/3) ... [2019-10-14 23:40:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f8a614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:40:24, skipping insertion in model container [2019-10-14 23:40:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:40:24" (3/3) ... [2019-10-14 23:40:24,402 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2019-10-14 23:40:24,412 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:40:24,423 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:40:24,435 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:40:24,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:40:24,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:40:24,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:40:24,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:40:24,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:40:24,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:40:24,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:40:24,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:40:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-14 23:40:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 23:40:24,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:24,506 INFO L380 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] [2019-10-14 23:40:24,509 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:24,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2019-10-14 23:40:24,524 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:24,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706804071] [2019-10-14 23:40:24,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:24,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:24,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,229 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:25,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706804071] [2019-10-14 23:40:25,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:25,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:40:25,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572621281] [2019-10-14 23:40:25,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:40:25,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:25,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:40:25,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:40:25,379 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2019-10-14 23:40:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:26,476 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2019-10-14 23:40:26,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:40:26,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-14 23:40:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:26,506 INFO L225 Difference]: With dead ends: 276 [2019-10-14 23:40:26,506 INFO L226 Difference]: Without dead ends: 153 [2019-10-14 23:40:26,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:40:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-10-14 23:40:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2019-10-14 23:40:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-14 23:40:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2019-10-14 23:40:26,595 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2019-10-14 23:40:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:26,595 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2019-10-14 23:40:26,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:40:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2019-10-14 23:40:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-14 23:40:26,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:26,600 INFO L380 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] [2019-10-14 23:40:26,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2019-10-14 23:40:26,601 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:26,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416123402] [2019-10-14 23:40:26,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:26,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:26,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,102 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:27,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416123402] [2019-10-14 23:40:27,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:27,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:40:27,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771221346] [2019-10-14 23:40:27,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:40:27,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:40:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:40:27,243 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2019-10-14 23:40:27,694 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:28,065 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:40:28,378 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:28,667 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:29,873 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:31,208 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2019-10-14 23:40:31,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:40:31,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-10-14 23:40:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:31,214 INFO L225 Difference]: With dead ends: 423 [2019-10-14 23:40:31,215 INFO L226 Difference]: Without dead ends: 327 [2019-10-14 23:40:31,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:40:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-10-14 23:40:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2019-10-14 23:40:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2019-10-14 23:40:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2019-10-14 23:40:31,293 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2019-10-14 23:40:31,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:31,293 INFO L462 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2019-10-14 23:40:31,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:40:31,293 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2019-10-14 23:40:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-14 23:40:31,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:31,296 INFO L380 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] [2019-10-14 23:40:31,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:31,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2019-10-14 23:40:31,297 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:31,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911917208] [2019-10-14 23:40:31,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:31,298 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:31,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,640 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:31,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911917208] [2019-10-14 23:40:31,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:31,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:40:31,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442275627] [2019-10-14 23:40:31,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:40:31,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:40:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:40:31,731 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2019-10-14 23:40:32,153 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:33,579 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:34,211 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2019-10-14 23:40:34,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:40:34,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2019-10-14 23:40:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:34,219 INFO L225 Difference]: With dead ends: 782 [2019-10-14 23:40:34,219 INFO L226 Difference]: Without dead ends: 545 [2019-10-14 23:40:34,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:40:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2019-10-14 23:40:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2019-10-14 23:40:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2019-10-14 23:40:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2019-10-14 23:40:34,317 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2019-10-14 23:40:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:34,318 INFO L462 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2019-10-14 23:40:34,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:40:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2019-10-14 23:40:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:40:34,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:34,320 INFO L380 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] [2019-10-14 23:40:34,321 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:34,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:34,321 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2019-10-14 23:40:34,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:34,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764165936] [2019-10-14 23:40:34,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:34,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:34,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,652 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:40:34,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764165936] [2019-10-14 23:40:34,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:34,728 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:40:34,728 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676958624] [2019-10-14 23:40:34,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:40:34,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:34,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:40:34,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:40:34,729 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2019-10-14 23:40:35,255 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:35,996 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:36,876 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:37,272 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:37,748 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:38,005 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:38,640 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2019-10-14 23:40:38,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:40:38,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-10-14 23:40:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:38,647 INFO L225 Difference]: With dead ends: 948 [2019-10-14 23:40:38,647 INFO L226 Difference]: Without dead ends: 524 [2019-10-14 23:40:38,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:40:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-14 23:40:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2019-10-14 23:40:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-14 23:40:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2019-10-14 23:40:38,720 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2019-10-14 23:40:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:38,720 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2019-10-14 23:40:38,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:40:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2019-10-14 23:40:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:40:38,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:38,723 INFO L380 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] [2019-10-14 23:40:38,723 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2019-10-14 23:40:38,724 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:38,724 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794853600] [2019-10-14 23:40:38,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:38,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:38,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,011 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:39,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794853600] [2019-10-14 23:40:39,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:39,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:40:39,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063182143] [2019-10-14 23:40:39,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:40:39,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:39,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:40:39,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:40:39,179 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2019-10-14 23:40:39,664 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:40,715 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:40:41,061 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:41,391 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:41,700 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:42,942 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2019-10-14 23:40:42,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:40:42,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-14 23:40:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:42,952 INFO L225 Difference]: With dead ends: 1360 [2019-10-14 23:40:42,952 INFO L226 Difference]: Without dead ends: 939 [2019-10-14 23:40:42,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:40:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2019-10-14 23:40:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2019-10-14 23:40:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-10-14 23:40:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2019-10-14 23:40:43,097 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2019-10-14 23:40:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:43,098 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2019-10-14 23:40:43,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:40:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2019-10-14 23:40:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:40:43,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:43,101 INFO L380 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] [2019-10-14 23:40:43,101 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:43,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2019-10-14 23:40:43,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:43,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205833881] [2019-10-14 23:40:43,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:43,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:43,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,386 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:43,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205833881] [2019-10-14 23:40:43,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:43,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:40:43,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135178856] [2019-10-14 23:40:43,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:40:43,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:43,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:40:43,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:40:43,515 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2019-10-14 23:40:44,044 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:44,900 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2019-10-14 23:40:44,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:40:44,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-10-14 23:40:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:44,910 INFO L225 Difference]: With dead ends: 1342 [2019-10-14 23:40:44,910 INFO L226 Difference]: Without dead ends: 783 [2019-10-14 23:40:44,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:40:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-14 23:40:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2019-10-14 23:40:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-10-14 23:40:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2019-10-14 23:40:45,065 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2019-10-14 23:40:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:45,066 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2019-10-14 23:40:45,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:40:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2019-10-14 23:40:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:40:45,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:45,070 INFO L380 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] [2019-10-14 23:40:45,070 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2019-10-14 23:40:45,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:45,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145996374] [2019-10-14 23:40:45,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:45,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:45,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,478 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:45,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145996374] [2019-10-14 23:40:45,626 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:45,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:40:45,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719814757] [2019-10-14 23:40:45,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:40:45,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:45,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:40:45,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:40:45,630 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2019-10-14 23:40:46,990 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:47,277 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:40:47,564 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:47,862 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:48,483 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2019-10-14 23:40:48,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:40:48,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-10-14 23:40:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:48,489 INFO L225 Difference]: With dead ends: 1456 [2019-10-14 23:40:48,489 INFO L226 Difference]: Without dead ends: 803 [2019-10-14 23:40:48,492 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:40:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2019-10-14 23:40:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2019-10-14 23:40:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-14 23:40:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2019-10-14 23:40:48,647 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2019-10-14 23:40:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:48,648 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2019-10-14 23:40:48,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:40:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2019-10-14 23:40:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:40:48,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:48,652 INFO L380 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] [2019-10-14 23:40:48,652 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2019-10-14 23:40:48,653 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:48,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400022145] [2019-10-14 23:40:48,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:48,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:48,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,075 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:49,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400022145] [2019-10-14 23:40:49,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:49,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:40:49,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321306549] [2019-10-14 23:40:49,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:40:49,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:40:49,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:40:49,211 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2019-10-14 23:40:49,939 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:50,227 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:50,492 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:51,307 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:51,595 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:51,866 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:52,680 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2019-10-14 23:40:52,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:40:52,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2019-10-14 23:40:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:52,688 INFO L225 Difference]: With dead ends: 1322 [2019-10-14 23:40:52,688 INFO L226 Difference]: Without dead ends: 649 [2019-10-14 23:40:52,691 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:40:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-14 23:40:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2019-10-14 23:40:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-10-14 23:40:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2019-10-14 23:40:52,765 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2019-10-14 23:40:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:52,766 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2019-10-14 23:40:52,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:40:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2019-10-14 23:40:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-14 23:40:52,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:52,768 INFO L380 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] [2019-10-14 23:40:52,768 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:52,769 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2019-10-14 23:40:52,769 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:52,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106447251] [2019-10-14 23:40:52,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:52,770 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:52,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,091 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:40:53,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106447251] [2019-10-14 23:40:53,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:40:53,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:40:53,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321451459] [2019-10-14 23:40:53,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:40:53,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:40:53,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:40:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:40:53,276 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2019-10-14 23:40:53,830 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:54,570 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:55,383 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:55,769 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:56,046 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-14 23:40:56,349 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:56,625 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:40:58,015 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:40:58,333 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:40:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:40:58,972 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2019-10-14 23:40:58,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-14 23:40:58,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-14 23:40:58,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:40:58,985 INFO L225 Difference]: With dead ends: 1645 [2019-10-14 23:40:58,985 INFO L226 Difference]: Without dead ends: 1269 [2019-10-14 23:40:58,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-14 23:40:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2019-10-14 23:40:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2019-10-14 23:40:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2019-10-14 23:40:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2019-10-14 23:40:59,163 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2019-10-14 23:40:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:40:59,165 INFO L462 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2019-10-14 23:40:59,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:40:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2019-10-14 23:40:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-14 23:40:59,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:40:59,168 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:40:59,168 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:40:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:40:59,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2019-10-14 23:40:59,169 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:40:59,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324667955] [2019-10-14 23:40:59,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:59,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:40:59,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:40:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,494 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:40:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:40:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat