/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_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:02:59,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:02:59,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:02:59,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:02:59,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:02:59,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:02:59,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:02:59,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:02:59,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:02:59,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:02:59,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:02:59,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:02:59,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:02:59,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:02:59,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:02:59,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:02:59,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:02:59,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:02:59,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:02:59,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:02:59,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:02:59,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:02:59,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:02:59,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:03:00,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:03:00,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:03:00,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:03:00,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:03:00,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:03:00,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:03:00,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:03:00,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:03:00,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:03:00,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:03:00,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:03:00,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:03:00,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:03:00,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:03:00,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:03:00,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:03:00,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:03:00,023 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 15:03:00,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:03:00,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:03:00,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:03:00,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:03:00,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:03:00,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:03:00,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:03:00,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:03:00,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:03:00,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:03:00,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:03:00,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:03:00,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:03:00,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:03:00,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:03:00,051 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:03:00,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:03:00,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:03:00,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:00,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:03:00,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:03:00,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:03:00,053 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:03:00,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:03:00,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:03:00,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:03:00,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:03:00,533 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:03:00,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-09-04 15:03:00,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9edf94d/225081420fb542efb47bbe3617609086/FLAG581d263a6 [2020-09-04 15:03:01,245 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:03:01,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-09-04 15:03:01,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9edf94d/225081420fb542efb47bbe3617609086/FLAG581d263a6 [2020-09-04 15:03:01,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b9edf94d/225081420fb542efb47bbe3617609086 [2020-09-04 15:03:01,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:03:01,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:03:01,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:01,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:03:01,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:03:01,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:01" (1/1) ... [2020-09-04 15:03:01,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:01, skipping insertion in model container [2020-09-04 15:03:01,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:01" (1/1) ... [2020-09-04 15:03:01,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:03:01,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:03:01,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:01,965 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:03:02,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:02,243 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:03:02,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02 WrapperNode [2020-09-04 15:03:02,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:02,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:03:02,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:03:02,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:03:02,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (1/1) ... [2020-09-04 15:03:02,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:03:02,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:03:02,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:03:02,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:03:02,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (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 15:03:02,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:03:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:03:02,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:03:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:03:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:03:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:03:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:03:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:03:02,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:03:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:03:02,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:03:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:03:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:03:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:03:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:03:02,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:03:02,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:03:02,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:03:02,467 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:03:02,468 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:03:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:03:02,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:03:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:03:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:03:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:03:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:03:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:03:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:03:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:03:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:03:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:03:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:03:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:03:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:03:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:03:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:03:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:03:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:03:02,481 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:03:02,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:03:02,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:03:02,481 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:03:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:03:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:03:02,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:03:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:03:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:02,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:03:02,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:02,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:03:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:03:03,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:03:03,764 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:03:03,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:03 BoogieIcfgContainer [2020-09-04 15:03:03,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:03:03,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:03:03,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:03:03,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:03:03,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:03:01" (1/3) ... [2020-09-04 15:03:03,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244b7878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:03, skipping insertion in model container [2020-09-04 15:03:03,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:02" (2/3) ... [2020-09-04 15:03:03,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244b7878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:03, skipping insertion in model container [2020-09-04 15:03:03,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:03" (3/3) ... [2020-09-04 15:03:03,783 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-09-04 15:03:03,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:03:03,807 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:03:03,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:03:03,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:03:03,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:03:03,863 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:03:03,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:03:03,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:03:03,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:03:03,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:03:03,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:03:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2020-09-04 15:03:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:03:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:03,913 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 15:03:03,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:03,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2015468822, now seen corresponding path program 1 times [2020-09-04 15:03:03,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:03,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862575308] [2020-09-04 15:03:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:04,012 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,703 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,899 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 15:03:04,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862575308] [2020-09-04 15:03:04,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:04,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:03:04,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819898918] [2020-09-04 15:03:04,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:03:04,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:04,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:03:04,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:04,933 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2020-09-04 15:03:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:06,462 INFO L93 Difference]: Finished difference Result 498 states and 590 transitions. [2020-09-04 15:03:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:03:06,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:03:06,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:06,485 INFO L225 Difference]: With dead ends: 498 [2020-09-04 15:03:06,485 INFO L226 Difference]: Without dead ends: 307 [2020-09-04 15:03:06,494 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 15:03:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-04 15:03:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 265. [2020-09-04 15:03:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-04 15:03:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2020-09-04 15:03:06,716 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 142 [2020-09-04 15:03:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:06,717 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2020-09-04 15:03:06,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:03:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2020-09-04 15:03:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:03:06,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:06,732 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 15:03:06,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:03:06,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:06,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:06,733 INFO L82 PathProgramCache]: Analyzing trace with hash -631468838, now seen corresponding path program 1 times [2020-09-04 15:03:06,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:06,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80286279] [2020-09-04 15:03:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:06,739 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,237 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:07,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:03:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,333 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 15:03:07,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80286279] [2020-09-04 15:03:07,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:07,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:03:07,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8570053] [2020-09-04 15:03:07,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:03:07,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:03:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:03:07,337 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand 4 states. [2020-09-04 15:03:07,940 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:08,960 INFO L93 Difference]: Finished difference Result 411 states and 461 transitions. [2020-09-04 15:03:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:03:08,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:03:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:08,967 INFO L225 Difference]: With dead ends: 411 [2020-09-04 15:03:08,967 INFO L226 Difference]: Without dead ends: 290 [2020-09-04 15:03:08,974 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 15:03:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-04 15:03:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 255. [2020-09-04 15:03:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 15:03:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 274 transitions. [2020-09-04 15:03:09,096 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 274 transitions. Word has length 143 [2020-09-04 15:03:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:09,096 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 274 transitions. [2020-09-04 15:03:09,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:03:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 274 transitions. [2020-09-04 15:03:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:03:09,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:09,099 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 15:03:09,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:03:09,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:09,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -604508154, now seen corresponding path program 1 times [2020-09-04 15:03:09,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:09,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356217708] [2020-09-04 15:03:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:09,104 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,508 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:09,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:09,672 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 15:03:09,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356217708] [2020-09-04 15:03:09,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:09,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:09,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723816471] [2020-09-04 15:03:09,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:09,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:09,677 INFO L87 Difference]: Start difference. First operand 255 states and 274 transitions. Second operand 10 states. [2020-09-04 15:03:10,217 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:10,600 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:10,921 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:11,241 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:11,558 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:11,878 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:13,682 INFO L93 Difference]: Finished difference Result 457 states and 523 transitions. [2020-09-04 15:03:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:03:13,683 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:03:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:13,688 INFO L225 Difference]: With dead ends: 457 [2020-09-04 15:03:13,688 INFO L226 Difference]: Without dead ends: 312 [2020-09-04 15:03:13,690 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 15:03:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-04 15:03:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 255. [2020-09-04 15:03:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 15:03:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 273 transitions. [2020-09-04 15:03:13,762 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 273 transitions. Word has length 156 [2020-09-04 15:03:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:13,762 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 273 transitions. [2020-09-04 15:03:13,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 273 transitions. [2020-09-04 15:03:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-04 15:03:13,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:13,766 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] [2020-09-04 15:03:13,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:03:13,766 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash 561125926, now seen corresponding path program 1 times [2020-09-04 15:03:13,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:13,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374405631] [2020-09-04 15:03:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:13,770 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,185 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-04 15:03:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-04 15:03:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:14,409 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 15:03:14,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374405631] [2020-09-04 15:03:14,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:14,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:03:14,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923319917] [2020-09-04 15:03:14,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:03:14,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:03:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:03:14,414 INFO L87 Difference]: Start difference. First operand 255 states and 273 transitions. Second operand 7 states. [2020-09-04 15:03:15,176 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:16,889 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:17,993 INFO L93 Difference]: Finished difference Result 637 states and 753 transitions. [2020-09-04 15:03:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:03:17,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-04 15:03:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:18,000 INFO L225 Difference]: With dead ends: 637 [2020-09-04 15:03:18,000 INFO L226 Difference]: Without dead ends: 492 [2020-09-04 15:03:18,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:03:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-04 15:03:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 365. [2020-09-04 15:03:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-09-04 15:03:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 392 transitions. [2020-09-04 15:03:18,115 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 392 transitions. Word has length 169 [2020-09-04 15:03:18,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:18,116 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 392 transitions. [2020-09-04 15:03:18,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:03:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 392 transitions. [2020-09-04 15:03:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 15:03:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:18,119 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, 1, 1, 1, 1, 1] [2020-09-04 15:03:18,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:03:18,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:18,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1803845393, now seen corresponding path program 1 times [2020-09-04 15:03:18,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:18,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997891130] [2020-09-04 15:03:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:18,123 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,528 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 15:03:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:03:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:18,860 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 15:03:18,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997891130] [2020-09-04 15:03:18,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:18,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:18,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219980425] [2020-09-04 15:03:18,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:18,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:18,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:18,868 INFO L87 Difference]: Start difference. First operand 365 states and 392 transitions. Second operand 10 states. [2020-09-04 15:03:19,418 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:21,147 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:21,484 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:21,814 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:22,130 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:22,402 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:22,686 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:22,983 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:23,466 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:25,278 INFO L93 Difference]: Finished difference Result 1064 states and 1283 transitions. [2020-09-04 15:03:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:03:25,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-09-04 15:03:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:25,291 INFO L225 Difference]: With dead ends: 1064 [2020-09-04 15:03:25,291 INFO L226 Difference]: Without dead ends: 809 [2020-09-04 15:03:25,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:03:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-04 15:03:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 583. [2020-09-04 15:03:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-04 15:03:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 632 transitions. [2020-09-04 15:03:25,525 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 632 transitions. Word has length 193 [2020-09-04 15:03:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:25,526 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 632 transitions. [2020-09-04 15:03:25,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:25,527 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 632 transitions. [2020-09-04 15:03:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 15:03:25,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:25,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:25,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:03:25,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:25,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2050601923, now seen corresponding path program 1 times [2020-09-04 15:03:25,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:25,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230888173] [2020-09-04 15:03:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:25,534 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:25,956 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:03:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 15:03:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,205 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 15:03:26,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230888173] [2020-09-04 15:03:26,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:26,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:26,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106325444] [2020-09-04 15:03:26,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:26,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:26,209 INFO L87 Difference]: Start difference. First operand 583 states and 632 transitions. Second operand 11 states. [2020-09-04 15:03:26,770 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:28,497 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:28,789 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:29,112 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:29,408 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:29,702 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:30,004 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:30,320 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:30,687 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:32,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:32,485 INFO L93 Difference]: Finished difference Result 944 states and 1166 transitions. [2020-09-04 15:03:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 15:03:32,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 198 [2020-09-04 15:03:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:32,496 INFO L225 Difference]: With dead ends: 944 [2020-09-04 15:03:32,496 INFO L226 Difference]: Without dead ends: 941 [2020-09-04 15:03:32,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-04 15:03:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-09-04 15:03:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 583. [2020-09-04 15:03:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-04 15:03:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 631 transitions. [2020-09-04 15:03:32,775 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 631 transitions. Word has length 198 [2020-09-04 15:03:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:32,776 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 631 transitions. [2020-09-04 15:03:32,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 631 transitions. [2020-09-04 15:03:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:32,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:32,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:32,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:03:32,779 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:32,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1064023592, now seen corresponding path program 1 times [2020-09-04 15:03:32,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:32,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646779503] [2020-09-04 15:03:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:32,786 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,117 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:33,356 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 15:03:33,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646779503] [2020-09-04 15:03:33,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:33,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:33,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521611782] [2020-09-04 15:03:33,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:33,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:33,359 INFO L87 Difference]: Start difference. First operand 583 states and 631 transitions. Second operand 11 states. [2020-09-04 15:03:34,690 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:35,004 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:35,324 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:35,621 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:35,934 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:36,214 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:38,141 INFO L93 Difference]: Finished difference Result 1424 states and 1717 transitions. [2020-09-04 15:03:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:38,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-09-04 15:03:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:38,148 INFO L225 Difference]: With dead ends: 1424 [2020-09-04 15:03:38,149 INFO L226 Difference]: Without dead ends: 951 [2020-09-04 15:03:38,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-09-04 15:03:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 599. [2020-09-04 15:03:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-09-04 15:03:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 647 transitions. [2020-09-04 15:03:38,308 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 647 transitions. Word has length 199 [2020-09-04 15:03:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:38,308 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 647 transitions. [2020-09-04 15:03:38,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 647 transitions. [2020-09-04 15:03:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:38,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:38,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:38,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:38,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:38,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash -2037893768, now seen corresponding path program 1 times [2020-09-04 15:03:38,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:38,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183428498] [2020-09-04 15:03:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:38,315 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,659 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:38,921 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 15:03:38,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183428498] [2020-09-04 15:03:38,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:38,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:03:38,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613366381] [2020-09-04 15:03:38,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:03:38,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:03:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:03:38,925 INFO L87 Difference]: Start difference. First operand 599 states and 647 transitions. Second operand 14 states. [2020-09-04 15:03:39,502 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:39,800 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:40,117 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:40,423 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:40,717 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:41,685 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:41,983 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:42,289 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:42,605 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:42,901 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:45,097 INFO L93 Difference]: Finished difference Result 1462 states and 1780 transitions. [2020-09-04 15:03:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:03:45,103 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2020-09-04 15:03:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:45,111 INFO L225 Difference]: With dead ends: 1462 [2020-09-04 15:03:45,111 INFO L226 Difference]: Without dead ends: 973 [2020-09-04 15:03:45,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:03:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-04 15:03:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 611. [2020-09-04 15:03:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-04 15:03:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 659 transitions. [2020-09-04 15:03:45,309 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 659 transitions. Word has length 199 [2020-09-04 15:03:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:45,310 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 659 transitions. [2020-09-04 15:03:45,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:03:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 659 transitions. [2020-09-04 15:03:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 15:03:45,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:45,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:45,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:03:45,313 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:45,314 INFO L82 PathProgramCache]: Analyzing trace with hash 616779547, now seen corresponding path program 1 times [2020-09-04 15:03:45,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:45,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780025321] [2020-09-04 15:03:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:45,316 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,663 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:03:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:03:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:45,881 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 15:03:45,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780025321] [2020-09-04 15:03:45,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:45,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:03:45,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115853093] [2020-09-04 15:03:45,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:03:45,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:03:45,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:03:45,883 INFO L87 Difference]: Start difference. First operand 611 states and 659 transitions. Second operand 8 states. [2020-09-04 15:03:46,540 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:47,126 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:50,987 INFO L93 Difference]: Finished difference Result 2131 states and 2675 transitions. [2020-09-04 15:03:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 15:03:50,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-04 15:03:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:50,998 INFO L225 Difference]: With dead ends: 2131 [2020-09-04 15:03:50,998 INFO L226 Difference]: Without dead ends: 1630 [2020-09-04 15:03:51,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-09-04 15:03:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-09-04 15:03:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1053. [2020-09-04 15:03:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-09-04 15:03:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1175 transitions. [2020-09-04 15:03:51,368 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1175 transitions. Word has length 199 [2020-09-04 15:03:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:51,369 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1175 transitions. [2020-09-04 15:03:51,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:03:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1175 transitions. [2020-09-04 15:03:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:03:51,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:51,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:51,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:03:51,374 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1803221553, now seen corresponding path program 1 times [2020-09-04 15:03:51,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:51,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205861663] [2020-09-04 15:03:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:51,381 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:51,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:51,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:51,771 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:03:51,771 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:03:51,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:03:51,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:03:51 BoogieIcfgContainer [2020-09-04 15:03:51,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:03:51,813 INFO L168 Benchmark]: Toolchain (without parser) took 50313.47 ms. Allocated memory was 139.5 MB in the beginning and 879.8 MB in the end (delta: 740.3 MB). Free memory was 101.4 MB in the beginning and 499.7 MB in the end (delta: -398.3 MB). Peak memory consumption was 342.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:51,813 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:03:51,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.66 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 172.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:51,815 INFO L168 Benchmark]: Boogie Preprocessor took 119.26 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:51,816 INFO L168 Benchmark]: RCFGBuilder took 1407.98 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 177.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:51,816 INFO L168 Benchmark]: TraceAbstraction took 48036.73 ms. Allocated memory was 237.0 MB in the beginning and 879.8 MB in the end (delta: 642.8 MB). Free memory was 175.6 MB in the beginning and 499.7 MB in the end (delta: -324.1 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:51,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.66 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 172.3 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.26 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1407.98 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 177.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48036.73 ms. Allocated memory was 237.0 MB in the beginning and 879.8 MB in the end (delta: 642.8 MB). Free memory was 175.6 MB in the beginning and 499.7 MB in the end (delta: -324.1 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 388]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] int waterLevel = 1; [L77] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L395] int pumpRunning = 0; [L396] int systemActive = 1; [L769] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L258] int retValue_acc ; [L259] int tmp ; [L263] FCALL select_helpers() [L264] FCALL select_features() [L265] CALL, EXPR valid_product() [L307] int retValue_acc ; [L310] retValue_acc = 1 [L311] return (retValue_acc); [L265] RET, EXPR valid_product() [L265] tmp = valid_product() [L267] COND TRUE \read(tmp) [L269] FCALL setup() [L270] CALL runTest() [L249] CALL test() [L318] int splverifierCounter ; [L319] int tmp ; [L320] int tmp___0 ; [L321] int tmp___1 ; [L322] int tmp___2 ; [L325] splverifierCounter = 0 [L327] COND TRUE 1 [L329] COND TRUE splverifierCounter < 4 [L335] tmp = __VERIFIER_nondet_int() [L337] COND TRUE \read(tmp) [L339] CALL waterRise() [L94] COND TRUE waterLevel < 2 [L95] waterLevel = waterLevel + 1 [L339] RET waterRise() [L345] tmp___0 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___0) [L349] CALL changeMethaneLevel() [L106] COND FALSE !(\read(methaneLevelCritical)) [L109] methaneLevelCritical = 1 [L349] RET changeMethaneLevel() [L355] tmp___2 = __VERIFIER_nondet_int() [L357] COND TRUE \read(tmp___2) [L359] CALL startSystem() [L595] systemActive = 1 [L359] RET startSystem() [L372] CALL timeShift() [L402] COND FALSE !(\read(pumpRunning)) [L409] COND TRUE \read(systemActive) [L411] CALL processEnvironment() [L457] int tmp ; [L460] COND FALSE !(\read(pumpRunning)) [L475] CALL processEnvironment__wrappee__highWaterSensor() [L431] int tmp ; [L434] COND TRUE ! pumpRunning [L436] CALL, EXPR isHighWaterLevel() [L554] int retValue_acc ; [L555] int tmp ; [L556] int tmp___0 ; [L560] CALL, EXPR isHighWaterSensorDry() [L156] int retValue_acc ; [L159] COND FALSE !(waterLevel < 2) [L163] retValue_acc = 0 [L164] return (retValue_acc); [L560] RET, EXPR isHighWaterSensorDry() [L560] tmp = isHighWaterSensorDry() [L562] COND FALSE !(\read(tmp)) [L565] tmp___0 = 1 [L567] retValue_acc = tmp___0 [L568] return (retValue_acc); [L436] RET, EXPR isHighWaterLevel() [L436] tmp = isHighWaterLevel() [L438] COND TRUE \read(tmp) [L440] CALL activatePump() [L485] pumpRunning = 1 [L440] RET activatePump() [L475] RET processEnvironment__wrappee__highWaterSensor() [L411] RET processEnvironment() [L417] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L115] int retValue_acc ; [L118] retValue_acc = methaneLevelCritical [L119] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L509] int retValue_acc ; [L512] retValue_acc = pumpRunning [L513] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L388] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 641 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2277 SDtfs, 5324 SDslu, 4280 SDs, 0 SdLazy, 9354 SolverSat, 1588 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1053occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2136 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...