/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:39:13,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:39:13,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:39:13,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:39:13,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:39:13,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:39:13,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:39:13,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:39:13,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:39:13,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:39:13,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:39:13,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:39:13,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:39:13,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:39:13,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:39:13,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:39:13,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:39:13,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:39:13,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:39:13,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:39:13,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:39:13,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:39:13,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:39:13,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:39:13,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:39:13,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:39:13,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:39:13,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:39:13,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:39:13,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:39:13,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:39:13,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:39:13,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:39:13,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:39:13,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:39:13,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:39:13,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:39:13,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:39:13,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:39:13,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:39:13,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:39:13,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:39:13,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:39:13,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:39:13,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:39:13,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:39:13,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:39:13,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:39:13,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:39:13,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:39:13,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:39:13,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:39:13,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:39:13,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:39:13,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:39:13,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:39:13,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:39:13,106 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:39:13,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:39:13,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:39:13,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:39:13,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:39:13,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:39:13,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:39:13,107 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:39:13,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:39:13,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:39:13,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:39:13,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:39:13,429 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:39:13,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-07-07 12:39:13,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76cb991f9/017fc37df09e4ed897d0bc26b805ab12/FLAG31cd34571 [2020-07-07 12:39:14,078 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:39:14,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-07-07 12:39:14,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76cb991f9/017fc37df09e4ed897d0bc26b805ab12/FLAG31cd34571 [2020-07-07 12:39:14,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76cb991f9/017fc37df09e4ed897d0bc26b805ab12 [2020-07-07 12:39:14,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:39:14,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:39:14,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:14,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:39:14,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:39:14,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b51e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:14, skipping insertion in model container [2020-07-07 12:39:14,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:39:14" (1/1) ... [2020-07-07 12:39:14,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:39:14,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:39:14,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:14,850 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:39:14,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:39:15,015 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:39:15,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15 WrapperNode [2020-07-07 12:39:15,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:39:15,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:39:15,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:39:15,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:39:15,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (1/1) ... [2020-07-07 12:39:15,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:39:15,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:39:15,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:39:15,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:39:15,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (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 [2020-07-07 12:39:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:39:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:39:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:39:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:39:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:39:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:39:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:39:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:39:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:39:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:39:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:39:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:39:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:39:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:39:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:39:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:39:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:39:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:39:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:39:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:39:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:39:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:39:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:39:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:39:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:39:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:39:16,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:39:16,292 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:39:16,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:16 BoogieIcfgContainer [2020-07-07 12:39:16,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:39:16,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:39:16,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:39:16,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:39:16,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:39:14" (1/3) ... [2020-07-07 12:39:16,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759749bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:16, skipping insertion in model container [2020-07-07 12:39:16,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:39:15" (2/3) ... [2020-07-07 12:39:16,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759749bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:39:16, skipping insertion in model container [2020-07-07 12:39:16,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:39:16" (3/3) ... [2020-07-07 12:39:16,308 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-07-07 12:39:16,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:39:16,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:39:16,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:39:16,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:39:16,367 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:39:16,368 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:39:16,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:39:16,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:39:16,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:39:16,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:39:16,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:39:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-07-07 12:39:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:39:16,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:16,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:16,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash 944307102, now seen corresponding path program 1 times [2020-07-07 12:39:16,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:16,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138705957] [2020-07-07 12:39:16,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,152 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:17,336 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:17,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138705957] [2020-07-07 12:39:17,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:17,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:39:17,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884810898] [2020-07-07 12:39:17,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:39:17,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:17,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:39:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:17,364 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-07-07 12:39:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:18,733 INFO L93 Difference]: Finished difference Result 494 states and 582 transitions. [2020-07-07 12:39:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:39:18,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:39:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:18,754 INFO L225 Difference]: With dead ends: 494 [2020-07-07 12:39:18,754 INFO L226 Difference]: Without dead ends: 306 [2020-07-07 12:39:18,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:39:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-07 12:39:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 262. [2020-07-07 12:39:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-07-07 12:39:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 282 transitions. [2020-07-07 12:39:18,911 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 282 transitions. Word has length 142 [2020-07-07 12:39:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:18,912 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 282 transitions. [2020-07-07 12:39:18,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:39:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 282 transitions. [2020-07-07 12:39:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:39:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:18,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:18,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:39:18,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:18,924 INFO L82 PathProgramCache]: Analyzing trace with hash 990794439, now seen corresponding path program 1 times [2020-07-07 12:39:18,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:18,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978802421] [2020-07-07 12:39:18,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,353 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:19,452 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:19,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978802421] [2020-07-07 12:39:19,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:19,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:39:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605553582] [2020-07-07 12:39:19,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:39:19,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:19,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:39:19,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:39:19,455 INFO L87 Difference]: Start difference. First operand 262 states and 282 transitions. Second operand 4 states. [2020-07-07 12:39:20,058 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:20,935 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2020-07-07 12:39:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:39:20,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:39:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:20,941 INFO L225 Difference]: With dead ends: 398 [2020-07-07 12:39:20,941 INFO L226 Difference]: Without dead ends: 289 [2020-07-07 12:39:20,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:39:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-07 12:39:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-07-07 12:39:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-07-07 12:39:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-07-07 12:39:21,019 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 143 [2020-07-07 12:39:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:21,020 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-07-07 12:39:21,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:39:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-07-07 12:39:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:39:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:21,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:21,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:39:21,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:21,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash -844663911, now seen corresponding path program 1 times [2020-07-07 12:39:21,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:21,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596729311] [2020-07-07 12:39:21,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,319 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:21,465 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:21,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596729311] [2020-07-07 12:39:21,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:21,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:39:21,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111711275] [2020-07-07 12:39:21,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:39:21,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:39:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:39:21,488 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 10 states. [2020-07-07 12:39:22,106 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:22,438 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:22,726 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:39:22,982 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:23,222 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:23,451 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:24,355 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:26,488 INFO L93 Difference]: Finished difference Result 691 states and 795 transitions. [2020-07-07 12:39:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:39:26,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:39:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:26,497 INFO L225 Difference]: With dead ends: 691 [2020-07-07 12:39:26,497 INFO L226 Difference]: Without dead ends: 549 [2020-07-07 12:39:26,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:39:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-07-07 12:39:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 442. [2020-07-07 12:39:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-07-07 12:39:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 486 transitions. [2020-07-07 12:39:26,662 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 486 transitions. Word has length 156 [2020-07-07 12:39:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:26,663 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 486 transitions. [2020-07-07 12:39:26,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:39:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 486 transitions. [2020-07-07 12:39:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:39:26,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:26,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:26,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:39:26,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:26,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1137144832, now seen corresponding path program 1 times [2020-07-07 12:39:26,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:26,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538448785] [2020-07-07 12:39:26,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,017 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:27,226 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:27,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538448785] [2020-07-07 12:39:27,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:27,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:27,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986420416] [2020-07-07 12:39:27,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:27,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:27,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:27,228 INFO L87 Difference]: Start difference. First operand 442 states and 486 transitions. Second operand 14 states. [2020-07-07 12:39:27,676 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:27,997 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:28,248 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:28,498 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:28,766 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:28,990 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:29,596 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:30,657 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:30,920 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:31,266 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:31,542 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:31,791 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:32,041 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:32,328 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:32,584 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:32,825 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,160 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:33,506 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:33,768 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:34,081 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:36,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:36,164 INFO L93 Difference]: Finished difference Result 1524 states and 1873 transitions. [2020-07-07 12:39:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 12:39:36,165 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-07-07 12:39:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:36,174 INFO L225 Difference]: With dead ends: 1524 [2020-07-07 12:39:36,174 INFO L226 Difference]: Without dead ends: 1192 [2020-07-07 12:39:36,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 12:39:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-07-07 12:39:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1053. [2020-07-07 12:39:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-07-07 12:39:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1211 transitions. [2020-07-07 12:39:36,505 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1211 transitions. Word has length 161 [2020-07-07 12:39:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:36,506 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1211 transitions. [2020-07-07 12:39:36,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1211 transitions. [2020-07-07 12:39:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:39:36,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:36,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:36,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:39:36,510 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1039475204, now seen corresponding path program 1 times [2020-07-07 12:39:36,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:36,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444291545] [2020-07-07 12:39:36,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,844 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:37,050 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:37,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444291545] [2020-07-07 12:39:37,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:37,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 12:39:37,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253845824] [2020-07-07 12:39:37,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 12:39:37,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:37,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 12:39:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 12:39:37,054 INFO L87 Difference]: Start difference. First operand 1053 states and 1211 transitions. Second operand 6 states. [2020-07-07 12:39:37,754 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:39,700 INFO L93 Difference]: Finished difference Result 2464 states and 2978 transitions. [2020-07-07 12:39:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 12:39:39,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-07-07 12:39:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:39,711 INFO L225 Difference]: With dead ends: 2464 [2020-07-07 12:39:39,711 INFO L226 Difference]: Without dead ends: 1521 [2020-07-07 12:39:39,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:39:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-07-07 12:39:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1418. [2020-07-07 12:39:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-07-07 12:39:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1642 transitions. [2020-07-07 12:39:40,387 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1642 transitions. Word has length 166 [2020-07-07 12:39:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:40,387 INFO L479 AbstractCegarLoop]: Abstraction has 1418 states and 1642 transitions. [2020-07-07 12:39:40,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 12:39:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1642 transitions. [2020-07-07 12:39:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 12:39:40,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:40,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:40,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:40,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash -39352853, now seen corresponding path program 1 times [2020-07-07 12:39:40,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:40,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368497503] [2020-07-07 12:39:40,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,798 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:41,028 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:41,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368497503] [2020-07-07 12:39:41,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:41,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:39:41,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847841460] [2020-07-07 12:39:41,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:39:41,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:39:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:39:41,030 INFO L87 Difference]: Start difference. First operand 1418 states and 1642 transitions. Second operand 11 states. [2020-07-07 12:39:41,591 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:43,716 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:43,960 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:44,235 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:44,500 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:44,743 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:45,597 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:45,840 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:46,102 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:46,612 INFO L93 Difference]: Finished difference Result 1602 states and 1908 transitions. [2020-07-07 12:39:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 12:39:46,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-07-07 12:39:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:46,621 INFO L225 Difference]: With dead ends: 1602 [2020-07-07 12:39:46,621 INFO L226 Difference]: Without dead ends: 1599 [2020-07-07 12:39:46,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:39:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-07-07 12:39:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1427. [2020-07-07 12:39:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-07-07 12:39:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1648 transitions. [2020-07-07 12:39:47,039 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1648 transitions. Word has length 209 [2020-07-07 12:39:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:47,042 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 1648 transitions. [2020-07-07 12:39:47,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:39:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1648 transitions. [2020-07-07 12:39:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-07-07 12:39:47,053 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:47,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:47,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:39:47,054 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:47,055 INFO L82 PathProgramCache]: Analyzing trace with hash 63773648, now seen corresponding path program 1 times [2020-07-07 12:39:47,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:47,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315613089] [2020-07-07 12:39:47,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,429 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:47,735 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:47,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315613089] [2020-07-07 12:39:47,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:47,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:47,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991963495] [2020-07-07 12:39:47,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:47,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:47,738 INFO L87 Difference]: Start difference. First operand 1427 states and 1648 transitions. Second operand 15 states. [2020-07-07 12:39:48,232 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:48,971 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:50,081 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:50,366 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:50,667 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:50,982 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:51,239 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:51,522 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:51,769 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:52,025 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:52,268 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:52,560 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:52,902 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:53,172 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:55,201 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:55,434 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:55,739 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:39:56,006 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:56,279 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:56,503 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:58,248 INFO L93 Difference]: Finished difference Result 3284 states and 4201 transitions. [2020-07-07 12:39:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 12:39:58,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 267 [2020-07-07 12:39:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:58,319 INFO L225 Difference]: With dead ends: 3284 [2020-07-07 12:39:58,320 INFO L226 Difference]: Without dead ends: 1967 [2020-07-07 12:39:58,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 12:39:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-07-07 12:39:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1449. [2020-07-07 12:39:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2020-07-07 12:39:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1663 transitions. [2020-07-07 12:39:58,949 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1663 transitions. Word has length 267 [2020-07-07 12:39:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:58,949 INFO L479 AbstractCegarLoop]: Abstraction has 1449 states and 1663 transitions. [2020-07-07 12:39:58,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1663 transitions. [2020-07-07 12:39:58,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-07-07 12:39:58,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:58,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:58,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:39:58,958 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:58,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1895848680, now seen corresponding path program 1 times [2020-07-07 12:39:58,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:58,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150339746] [2020-07-07 12:39:58,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,245 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:59,484 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:59,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150339746] [2020-07-07 12:39:59,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:59,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:59,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552460209] [2020-07-07 12:39:59,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:59,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:59,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:59,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:59,486 INFO L87 Difference]: Start difference. First operand 1449 states and 1663 transitions. Second operand 15 states. [2020-07-07 12:40:00,027 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:00,260 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:00,547 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:00,782 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:00,996 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:01,855 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:02,096 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:02,343 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:02,634 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:02,886 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:40:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:04,484 INFO L93 Difference]: Finished difference Result 2743 states and 3293 transitions. [2020-07-07 12:40:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:40:04,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 262 [2020-07-07 12:40:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:04,493 INFO L225 Difference]: With dead ends: 2743 [2020-07-07 12:40:04,493 INFO L226 Difference]: Without dead ends: 1404 [2020-07-07 12:40:04,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:40:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-07-07 12:40:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1178. [2020-07-07 12:40:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-07-07 12:40:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1344 transitions. [2020-07-07 12:40:04,946 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1344 transitions. Word has length 262 [2020-07-07 12:40:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:04,947 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1344 transitions. [2020-07-07 12:40:04,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:40:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1344 transitions. [2020-07-07 12:40:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-07-07 12:40:04,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:04,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:04,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:40:04,953 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:04,953 INFO L82 PathProgramCache]: Analyzing trace with hash -472658643, now seen corresponding path program 1 times [2020-07-07 12:40:04,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:04,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582569041] [2020-07-07 12:40:04,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,245 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:40:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:40:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:40:05,504 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:05,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582569041] [2020-07-07 12:40:05,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:40:05,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:40:05,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072168514] [2020-07-07 12:40:05,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:40:05,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:40:05,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:40:05,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:40:05,511 INFO L87 Difference]: Start difference. First operand 1178 states and 1344 transitions. Second operand 14 states. [2020-07-07 12:40:06,004 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:06,678 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:07,362 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:07,606 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:07,895 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:08,158 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:08,398 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:08,647 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:40:08,885 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:09,151 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:09,426 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:40:09,714 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:40:11,470 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:40:11,701 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:40:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:40:12,921 INFO L93 Difference]: Finished difference Result 3022 states and 3796 transitions. [2020-07-07 12:40:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 12:40:12,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 267 [2020-07-07 12:40:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:40:12,934 INFO L225 Difference]: With dead ends: 3022 [2020-07-07 12:40:12,934 INFO L226 Difference]: Without dead ends: 2174 [2020-07-07 12:40:12,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 12:40:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-07-07 12:40:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1541. [2020-07-07 12:40:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-07-07 12:40:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1786 transitions. [2020-07-07 12:40:13,341 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1786 transitions. Word has length 267 [2020-07-07 12:40:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:40:13,342 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1786 transitions. [2020-07-07 12:40:13,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:40:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1786 transitions. [2020-07-07 12:40:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-07-07 12:40:13,350 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:40:13,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:40:13,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:40:13,351 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:40:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:40:13,351 INFO L82 PathProgramCache]: Analyzing trace with hash -593865687, now seen corresponding path program 2 times [2020-07-07 12:40:13,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:40:13,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574518751] [2020-07-07 12:40:13,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:40:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:40:14,019 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:40:14,019 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:40:14,019 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:40:14,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:40:14,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:40:14 BoogieIcfgContainer [2020-07-07 12:40:14,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:40:14,059 INFO L168 Benchmark]: Toolchain (without parser) took 59716.56 ms. Allocated memory was 134.7 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 98.8 MB in the beginning and 448.2 MB in the end (delta: -349.4 MB). Peak memory consumption was 688.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,060 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.69 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 98.6 MB in the beginning and 167.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,061 INFO L168 Benchmark]: Boogie Preprocessor took 93.45 ms. Allocated memory is still 199.8 MB. Free memory was 167.0 MB in the beginning and 163.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,062 INFO L168 Benchmark]: RCFGBuilder took 1189.09 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 162.6 MB in the beginning and 173.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,063 INFO L168 Benchmark]: TraceAbstraction took 57757.49 ms. Allocated memory was 225.4 MB in the beginning and 1.2 GB in the end (delta: 946.9 MB). Free memory was 171.6 MB in the beginning and 448.2 MB in the end (delta: -276.6 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:40:14,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.69 ms. Allocated memory was 134.7 MB in the beginning and 199.8 MB in the end (delta: 65.0 MB). Free memory was 98.6 MB in the beginning and 167.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.45 ms. Allocated memory is still 199.8 MB. Free memory was 167.0 MB in the beginning and 163.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1189.09 ms. Allocated memory was 199.8 MB in the beginning and 225.4 MB in the end (delta: 25.7 MB). Free memory was 162.6 MB in the beginning and 173.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57757.49 ms. Allocated memory was 225.4 MB in the beginning and 1.2 GB in the end (delta: 946.9 MB). Free memory was 171.6 MB in the beginning and 448.2 MB in the end (delta: -276.6 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2354 SDtfs, 6340 SDslu, 6145 SDs, 0 SdLazy, 13597 SolverSat, 2308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 298 SyntacticMatches, 6 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1541occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1979 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...