/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_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:33:53,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:33:53,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:33:54,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:33:54,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:33:54,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:33:54,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:33:54,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:33:54,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:33:54,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:33:54,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:33:54,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:33:54,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:33:54,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:33:54,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:33:54,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:33:54,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:33:54,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:33:54,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:33:54,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:33:54,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:33:54,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:33:54,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:33:54,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:33:54,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:33:54,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:33:54,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:33:54,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:33:54,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:33:54,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:33:54,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:33:54,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:33:54,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:33:54,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:33:54,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:33:54,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:33:54,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:33:54,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:33:54,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:33:54,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:33:54,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:33:54,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:33:54,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:33:54,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:33:54,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:33:54,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:33:54,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:33:54,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:33:54,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:33:54,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:33:54,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:33:54,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:33:54,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:33:54,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:33:54,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:33:54,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:33:54,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:33:54,128 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:33:54,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:33:54,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:33:54,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:33:54,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:33:54,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:33:54,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:33:54,130 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:33:54,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:33:54,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:33:54,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:33:54,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:33:54,560 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:33:54,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-04 15:33:54,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab092cabc/8fb2f436b658487b84c1c2d005bd3ef6/FLAGbae202652 [2020-09-04 15:33:55,240 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:33:55,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-04 15:33:55,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab092cabc/8fb2f436b658487b84c1c2d005bd3ef6/FLAGbae202652 [2020-09-04 15:33:55,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab092cabc/8fb2f436b658487b84c1c2d005bd3ef6 [2020-09-04 15:33:55,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:33:55,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:33:55,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:55,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:33:55,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:33:55,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:55" (1/1) ... [2020-09-04 15:33:55,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2859c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:55, skipping insertion in model container [2020-09-04 15:33:55,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:55" (1/1) ... [2020-09-04 15:33:55,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:33:55,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:33:56,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:56,122 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:33:56,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:56,281 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:33:56,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56 WrapperNode [2020-09-04 15:33:56,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:56,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:33:56,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:33:56,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:33:56,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... [2020-09-04 15:33:56,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:33:56,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:33:56,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:33:56,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:33:56,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:33:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:33:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:33:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:33:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:33:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:33:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:33:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:33:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:33:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:33:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:33:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:33:56,511 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:33:56,511 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:33:56,511 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:33:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:33:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:33:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:33:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:33:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:33:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:33:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:33:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:33:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:33:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:33:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:33:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:33:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:33:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:33:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:33:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:33:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:33:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:33:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:33:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:33:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:33:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:33:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:33:57,634 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:33:57,635 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:33:57,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:57 BoogieIcfgContainer [2020-09-04 15:33:57,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:33:57,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:33:57,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:33:57,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:33:57,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:33:55" (1/3) ... [2020-09-04 15:33:57,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd4719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:57, skipping insertion in model container [2020-09-04 15:33:57,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:56" (2/3) ... [2020-09-04 15:33:57,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd4719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:57, skipping insertion in model container [2020-09-04 15:33:57,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:57" (3/3) ... [2020-09-04 15:33:57,651 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-09-04 15:33:57,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:33:57,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:33:57,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:33:57,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:33:57,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:33:57,722 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:33:57,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:33:57,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:33:57,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:33:57,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:33:57,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:33:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-04 15:33:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:33:57,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:57,769 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] [2020-09-04 15:33:57,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash -66701350, now seen corresponding path program 1 times [2020-09-04 15:33:57,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:57,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502321590] [2020-09-04 15:33:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:57,860 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,556 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:33:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:33:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:33:58,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502321590] [2020-09-04 15:33:58,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:58,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:33:58,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203613570] [2020-09-04 15:33:58,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:33:58,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:33:58,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:33:58,770 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-09-04 15:34:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:00,085 INFO L93 Difference]: Finished difference Result 474 states and 559 transitions. [2020-09-04 15:34:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:34:00,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:34:00,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:00,108 INFO L225 Difference]: With dead ends: 474 [2020-09-04 15:34:00,108 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 15:34:00,114 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 [2020-09-04 15:34:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 15:34:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2020-09-04 15:34:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-04 15:34:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 272 transitions. [2020-09-04 15:34:00,252 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 272 transitions. Word has length 142 [2020-09-04 15:34:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:00,253 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 272 transitions. [2020-09-04 15:34:00,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:34:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 272 transitions. [2020-09-04 15:34:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:34:00,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:00,259 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] [2020-09-04 15:34:00,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:34:00,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:00,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2010231336, now seen corresponding path program 1 times [2020-09-04 15:34:00,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:00,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927897366] [2020-09-04 15:34:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:00,264 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,729 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:34:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:34:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:00,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927897366] [2020-09-04 15:34:00,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:00,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:34:00,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812638479] [2020-09-04 15:34:00,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:34:00,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:34:00,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:34:00,869 INFO L87 Difference]: Start difference. First operand 253 states and 272 transitions. Second operand 4 states. [2020-09-04 15:34:01,485 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:02,456 INFO L93 Difference]: Finished difference Result 387 states and 430 transitions. [2020-09-04 15:34:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:34:02,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:34:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:02,466 INFO L225 Difference]: With dead ends: 387 [2020-09-04 15:34:02,466 INFO L226 Difference]: Without dead ends: 278 [2020-09-04 15:34:02,470 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 [2020-09-04 15:34:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-09-04 15:34:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 243. [2020-09-04 15:34:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 15:34:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 259 transitions. [2020-09-04 15:34:02,628 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 259 transitions. Word has length 143 [2020-09-04 15:34:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:02,629 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 259 transitions. [2020-09-04 15:34:02,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:34:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 259 transitions. [2020-09-04 15:34:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:34:02,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:02,632 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] [2020-09-04 15:34:02,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:34:02,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash 734706202, now seen corresponding path program 1 times [2020-09-04 15:34:02,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:02,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287021356] [2020-09-04 15:34:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:02,636 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,044 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:03,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:34:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:34:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:03,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287021356] [2020-09-04 15:34:03,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:03,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:34:03,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880006957] [2020-09-04 15:34:03,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:34:03,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:03,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:34:03,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:34:03,191 INFO L87 Difference]: Start difference. First operand 243 states and 259 transitions. Second operand 10 states. [2020-09-04 15:34:03,732 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:04,116 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:04,413 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:34:04,716 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:05,055 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:05,351 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:06,961 INFO L93 Difference]: Finished difference Result 433 states and 492 transitions. [2020-09-04 15:34:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:34:06,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:34:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:06,968 INFO L225 Difference]: With dead ends: 433 [2020-09-04 15:34:06,968 INFO L226 Difference]: Without dead ends: 300 [2020-09-04 15:34:06,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:34:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-04 15:34:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 243. [2020-09-04 15:34:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 15:34:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2020-09-04 15:34:07,053 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 156 [2020-09-04 15:34:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:07,054 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2020-09-04 15:34:07,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:34:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2020-09-04 15:34:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-04 15:34:07,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:07,057 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] [2020-09-04 15:34:07,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:34:07,058 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:07,058 INFO L82 PathProgramCache]: Analyzing trace with hash 819157147, now seen corresponding path program 1 times [2020-09-04 15:34:07,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:07,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618287787] [2020-09-04 15:34:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:07,062 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,467 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:34:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:34:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 15:34:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:07,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618287787] [2020-09-04 15:34:07,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:07,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:34:07,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750382885] [2020-09-04 15:34:07,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:34:07,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:07,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:34:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:34:07,682 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 7 states. [2020-09-04 15:34:08,422 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:10,144 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:10,821 INFO L93 Difference]: Finished difference Result 604 states and 709 transitions. [2020-09-04 15:34:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 15:34:10,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-04 15:34:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:10,827 INFO L225 Difference]: With dead ends: 604 [2020-09-04 15:34:10,827 INFO L226 Difference]: Without dead ends: 471 [2020-09-04 15:34:10,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-04 15:34:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 344. [2020-09-04 15:34:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-09-04 15:34:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 369 transitions. [2020-09-04 15:34:10,944 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 369 transitions. Word has length 164 [2020-09-04 15:34:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:10,944 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 369 transitions. [2020-09-04 15:34:10,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:34:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 369 transitions. [2020-09-04 15:34:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-04 15:34:10,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:10,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:10,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:34:10,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:10,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1786267109, now seen corresponding path program 1 times [2020-09-04 15:34:10,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:10,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896545262] [2020-09-04 15:34:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:10,951 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,335 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:34:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 15:34:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:34:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:11,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896545262] [2020-09-04 15:34:11,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:11,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:11,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746114518] [2020-09-04 15:34:11,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:11,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:11,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:11,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:11,699 INFO L87 Difference]: Start difference. First operand 344 states and 369 transitions. Second operand 15 states. [2020-09-04 15:34:12,232 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:12,633 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:12,941 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:13,246 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:13,526 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:13,755 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:14,447 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:15,755 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:16,095 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:16,435 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:16,781 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:17,104 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:17,404 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:17,706 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:18,048 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:18,448 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:18,778 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:20,796 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:21,094 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:21,446 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:22,681 INFO L93 Difference]: Finished difference Result 1246 states and 1557 transitions. [2020-09-04 15:34:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-04 15:34:22,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2020-09-04 15:34:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:22,695 INFO L225 Difference]: With dead ends: 1246 [2020-09-04 15:34:22,695 INFO L226 Difference]: Without dead ends: 1012 [2020-09-04 15:34:22,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 15:34:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-04 15:34:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 713. [2020-09-04 15:34:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-09-04 15:34:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 786 transitions. [2020-09-04 15:34:23,052 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 786 transitions. Word has length 188 [2020-09-04 15:34:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:23,053 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 786 transitions. [2020-09-04 15:34:23,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:34:23,053 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 786 transitions. [2020-09-04 15:34:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-04 15:34:23,060 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:23,062 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, 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] [2020-09-04 15:34:23,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:34:23,063 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash 541767787, now seen corresponding path program 1 times [2020-09-04 15:34:23,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:23,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903565189] [2020-09-04 15:34:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:23,107 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,561 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:34:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:34:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 15:34:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-04 15:34:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-04 15:34:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-09-04 15:34:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-09-04 15:34:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 15:34:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:23,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903565189] [2020-09-04 15:34:23,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:23,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:23,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898416696] [2020-09-04 15:34:23,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:23,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:23,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:23,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:23,956 INFO L87 Difference]: Start difference. First operand 713 states and 786 transitions. Second operand 15 states. [2020-09-04 15:34:24,519 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:25,388 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:26,283 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:26,612 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:26,952 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:27,309 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:27,624 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:27,950 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:28,265 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:28,598 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:28,901 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:29,234 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:29,603 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:29,926 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:32,366 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:32,637 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:32,950 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:34:33,244 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:33,541 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:33,821 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:34,726 INFO L93 Difference]: Finished difference Result 1652 states and 2029 transitions. [2020-09-04 15:34:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 15:34:34,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-09-04 15:34:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:34,734 INFO L225 Difference]: With dead ends: 1652 [2020-09-04 15:34:34,734 INFO L226 Difference]: Without dead ends: 1049 [2020-09-04 15:34:34,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=525, Invalid=2231, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 15:34:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-09-04 15:34:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 709. [2020-09-04 15:34:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-09-04 15:34:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 782 transitions. [2020-09-04 15:34:35,022 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 782 transitions. Word has length 271 [2020-09-04 15:34:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:35,023 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 782 transitions. [2020-09-04 15:34:35,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:34:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 782 transitions. [2020-09-04 15:34:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-04 15:34:35,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:35,028 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] [2020-09-04 15:34:35,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:34:35,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:35,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:35,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1728522358, now seen corresponding path program 1 times [2020-09-04 15:34:35,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:35,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941097848] [2020-09-04 15:34:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:35,053 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,460 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:34:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:34:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 15:34:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 15:34:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 15:34:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-09-04 15:34:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-09-04 15:34:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:35,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941097848] [2020-09-04 15:34:35,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:35,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:34:35,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454183606] [2020-09-04 15:34:35,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:34:35,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:34:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:35,729 INFO L87 Difference]: Start difference. First operand 709 states and 782 transitions. Second operand 14 states. [2020-09-04 15:34:36,289 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:37,097 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:38,334 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:38,641 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:38,980 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:39,305 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:39,611 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:39,941 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:40,230 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:40,559 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:40,918 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:41,182 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:42,428 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:42,707 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:44,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:44,531 INFO L93 Difference]: Finished difference Result 1894 states and 2355 transitions. [2020-09-04 15:34:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 15:34:44,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 267 [2020-09-04 15:34:44,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:44,541 INFO L225 Difference]: With dead ends: 1894 [2020-09-04 15:34:44,542 INFO L226 Difference]: Without dead ends: 1471 [2020-09-04 15:34:44,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=596, Invalid=1566, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 15:34:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2020-09-04 15:34:44,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 916. [2020-09-04 15:34:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-09-04 15:34:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1019 transitions. [2020-09-04 15:34:44,869 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1019 transitions. Word has length 267 [2020-09-04 15:34:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:44,869 INFO L479 AbstractCegarLoop]: Abstraction has 916 states and 1019 transitions. [2020-09-04 15:34:44,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1019 transitions. [2020-09-04 15:34:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-04 15:34:44,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:44,873 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] [2020-09-04 15:34:44,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:34:44,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash -956307355, now seen corresponding path program 1 times [2020-09-04 15:34:44,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:44,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291468261] [2020-09-04 15:34:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:44,889 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,208 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:34:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:34:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-04 15:34:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 15:34:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 15:34:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 15:34:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 15:34:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:45,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291468261] [2020-09-04 15:34:45,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:45,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:45,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214438586] [2020-09-04 15:34:45,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:45,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:45,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:45,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:45,521 INFO L87 Difference]: Start difference. First operand 916 states and 1019 transitions. Second operand 15 states. [2020-09-04 15:34:46,166 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:46,474 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:46,774 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:47,072 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:47,356 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:48,225 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:48,530 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:48,826 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:49,141 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:49,425 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:51,029 INFO L93 Difference]: Finished difference Result 1729 states and 2047 transitions. [2020-09-04 15:34:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:34:51,030 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 262 [2020-09-04 15:34:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:51,036 INFO L225 Difference]: With dead ends: 1729 [2020-09-04 15:34:51,036 INFO L226 Difference]: Without dead ends: 923 [2020-09-04 15:34:51,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:34:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-09-04 15:34:51,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 703. [2020-09-04 15:34:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-09-04 15:34:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 784 transitions. [2020-09-04 15:34:51,313 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 784 transitions. Word has length 262 [2020-09-04 15:34:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:51,314 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 784 transitions. [2020-09-04 15:34:51,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:34:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 784 transitions. [2020-09-04 15:34:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-09-04 15:34:51,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:51,319 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] [2020-09-04 15:34:51,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:34:51,319 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1125603866, now seen corresponding path program 2 times [2020-09-04 15:34:51,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:51,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933962583] [2020-09-04 15:34:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:51,334 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:51,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:51,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:51,892 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:34:51,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:34:51,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:34:51,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:34:51 BoogieIcfgContainer [2020-09-04 15:34:51,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:34:51,930 INFO L168 Benchmark]: Toolchain (without parser) took 56430.15 ms. Allocated memory was 138.9 MB in the beginning and 914.4 MB in the end (delta: 775.4 MB). Free memory was 101.8 MB in the beginning and 680.3 MB in the end (delta: -578.5 MB). Peak memory consumption was 196.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,931 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.22 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 170.8 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,933 INFO L168 Benchmark]: Boogie Preprocessor took 124.62 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 166.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,933 INFO L168 Benchmark]: RCFGBuilder took 1234.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 178.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,934 INFO L168 Benchmark]: TraceAbstraction took 54285.67 ms. Allocated memory was 236.5 MB in the beginning and 914.4 MB in the end (delta: 677.9 MB). Free memory was 176.7 MB in the beginning and 680.3 MB in the end (delta: -503.6 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:51,938 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.22 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 170.8 MB in the end (delta: -69.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.62 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 166.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1234.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 178.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 54285.67 ms. Allocated memory was 236.5 MB in the beginning and 914.4 MB in the end (delta: 677.9 MB). Free memory was 176.7 MB in the beginning and 680.3 MB in the end (delta: -503.6 MB). Peak memory consumption was 174.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; [L654] FCALL select_helpers() [L655] FCALL select_features() [L656] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L656] RET, EXPR valid_product() [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) [L660] FCALL setup() [L661] CALL runTest() [L643] CALL test() [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) [L695] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L695] RET waterRise() [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L715] CALL startSystem() [L915] systemActive = 1 [L715] RET startSystem() [L728] CALL timeShift() [L749] COND FALSE !(\read(pumpRunning)) [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND TRUE ! pumpRunning [L783] CALL, EXPR isHighWaterLevel() [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L899] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L899] RET, EXPR isHighWaterSensorDry() [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); [L783] RET, EXPR isHighWaterLevel() [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L787] CALL activatePump() [L812] int tmp ; [L816] CALL, EXPR isMethaneAlarm() [L837] int retValue_acc ; [L841] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L841] RET, EXPR isMethaneLevelCritical() [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); [L816] RET, EXPR isMethaneAlarm() [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L822] CALL activatePump__wrappee__highWaterSensor() [L806] pumpRunning = 1 [L822] RET activatePump__wrappee__highWaterSensor() [L787] RET activatePump() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L715] CALL startSystem() [L915] systemActive = 1 [L715] RET startSystem() [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L715] CALL startSystem() [L915] systemActive = 1 [L715] RET startSystem() [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L557] CALL, EXPR isPumpRunning() [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); [L557] RET, EXPR isPumpRunning() [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) [L561] CALL __automaton_fail() [L924] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 46.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2028 SDtfs, 6159 SDslu, 5338 SDs, 0 SdLazy, 11555 SolverSat, 2259 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 480 GetRequests, 281 SyntacticMatches, 6 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=916occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1675 StatesRemovedByMinimization, 8 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...