/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:16:41,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:16:41,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:16:41,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:16:42,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:16:42,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:16:42,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:16:42,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:16:42,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:16:42,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:16:42,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:16:42,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:16:42,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:16:42,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:16:42,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:16:42,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:16:42,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:16:42,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:16:42,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:16:42,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:16:42,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:16:42,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:16:42,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:16:42,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:16:42,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:16:42,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:16:42,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:16:42,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:16:42,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:16:42,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:16:42,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:16:42,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:16:42,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:16:42,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:16:42,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:16:42,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:16:42,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:16:42,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:16:42,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:16:42,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:16:42,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:16:42,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:16:42,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:16:42,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:16:42,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:16:42,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:16:42,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:16:42,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:16:42,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:16:42,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:16:42,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:16:42,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:16:42,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:16:42,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:16:42,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:16:42,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:16:42,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:16:42,125 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:16:42,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:16:42,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:16:42,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:16:42,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:16:42,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:16:42,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:16:42,126 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:16:42,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:16:42,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:16:42,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:16:42,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:16:42,544 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:16:42,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2021-02-21 19:16:42,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3898d55c8/a4238451e868496abca6f35d696448ac/FLAGc8088fcea [2021-02-21 19:16:43,316 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:16:43,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2021-02-21 19:16:43,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3898d55c8/a4238451e868496abca6f35d696448ac/FLAGc8088fcea [2021-02-21 19:16:43,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3898d55c8/a4238451e868496abca6f35d696448ac [2021-02-21 19:16:43,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:16:43,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:16:43,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:43,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:16:43,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:16:43,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:43" (1/1) ... [2021-02-21 19:16:43,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a167bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:43, skipping insertion in model container [2021-02-21 19:16:43,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:16:43" (1/1) ... [2021-02-21 19:16:43,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:16:43,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:16:44,096 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c[17936,17949] [2021-02-21 19:16:44,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:44,123 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:16:44,209 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c[17936,17949] [2021-02-21 19:16:44,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:16:44,246 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:16:44,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44 WrapperNode [2021-02-21 19:16:44,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:16:44,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:16:44,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:16:44,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:16:44,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... [2021-02-21 19:16:44,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:16:44,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:16:44,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:16:44,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:16:44,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:16:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:16:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:16:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:16:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:16:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:16:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:16:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:16:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:16:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:16:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:16:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:16:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:16:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:16:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:16:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:16:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:16:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:16:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:16:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:16:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:16:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:16:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:16:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:16:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:16:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:16:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:16:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:16:46,000 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:16:46,001 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:16:46,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:46 BoogieIcfgContainer [2021-02-21 19:16:46,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:16:46,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:16:46,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:16:46,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:16:46,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:16:43" (1/3) ... [2021-02-21 19:16:46,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d174d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:46, skipping insertion in model container [2021-02-21 19:16:46,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:16:44" (2/3) ... [2021-02-21 19:16:46,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d174d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:16:46, skipping insertion in model container [2021-02-21 19:16:46,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:16:46" (3/3) ... [2021-02-21 19:16:46,017 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product24.cil.c [2021-02-21 19:16:46,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:16:46,030 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:16:46,050 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:16:46,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:16:46,082 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:16:46,082 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:16:46,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:16:46,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:16:46,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:16:46,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:16:46,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:16:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2021-02-21 19:16:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:16:46,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:46,128 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] [2021-02-21 19:16:46,128 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1234803203, now seen corresponding path program 1 times [2021-02-21 19:16:46,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:46,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634256183] [2021-02-21 19:16:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:46,228 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:46,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:46,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:46,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:46,964 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:16:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:16:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:47,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:47,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:47,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634256183] [2021-02-21 19:16:47,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:47,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:16:47,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197718722] [2021-02-21 19:16:47,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:16:47,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:47,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:16:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:16:47,176 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2021-02-21 19:16:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:49,122 INFO L93 Difference]: Finished difference Result 494 states and 589 transitions. [2021-02-21 19:16:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:16:49,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:16:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:49,144 INFO L225 Difference]: With dead ends: 494 [2021-02-21 19:16:49,144 INFO L226 Difference]: Without dead ends: 308 [2021-02-21 19:16:49,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:16:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-02-21 19:16:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2021-02-21 19:16:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-21 19:16:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-21 19:16:49,349 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 147 [2021-02-21 19:16:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:49,350 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-21 19:16:49,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:16:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-21 19:16:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:16:49,357 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:49,357 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] [2021-02-21 19:16:49,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:16:49,358 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:49,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1850581969, now seen corresponding path program 1 times [2021-02-21 19:16:49,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:49,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471057474] [2021-02-21 19:16:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:49,364 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:49,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,862 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:16:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:16:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:49,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:49,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:49,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471057474] [2021-02-21 19:16:49,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:49,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:16:49,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196591600] [2021-02-21 19:16:49,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:16:49,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:16:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:16:49,982 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-21 19:16:50,708 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:51,829 INFO L93 Difference]: Finished difference Result 400 states and 451 transitions. [2021-02-21 19:16:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:16:51,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:16:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:51,836 INFO L225 Difference]: With dead ends: 400 [2021-02-21 19:16:51,837 INFO L226 Difference]: Without dead ends: 291 [2021-02-21 19:16:51,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:16:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-02-21 19:16:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2021-02-21 19:16:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-21 19:16:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-21 19:16:51,967 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 148 [2021-02-21 19:16:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:51,968 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-21 19:16:51,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:16:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-21 19:16:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:16:51,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:51,972 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] [2021-02-21 19:16:51,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:16:51,973 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 93790275, now seen corresponding path program 1 times [2021-02-21 19:16:51,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:51,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622408770] [2021-02-21 19:16:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:51,978 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:52,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:52,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:52,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,425 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:52,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:52,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:16:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:52,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:16:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:16:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:52,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:52,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:52,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622408770] [2021-02-21 19:16:52,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:52,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:16:52,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862863427] [2021-02-21 19:16:52,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:16:52,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:16:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:16:52,616 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-21 19:16:53,317 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:16:53,735 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:16:54,122 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:16:54,490 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:54,823 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:16:55,137 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:16:56,191 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:16:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:16:58,848 INFO L93 Difference]: Finished difference Result 687 states and 802 transitions. [2021-02-21 19:16:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:16:58,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:16:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:16:58,855 INFO L225 Difference]: With dead ends: 687 [2021-02-21 19:16:58,855 INFO L226 Difference]: Without dead ends: 548 [2021-02-21 19:16:58,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:16:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-02-21 19:16:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 453. [2021-02-21 19:16:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2021-02-21 19:16:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 507 transitions. [2021-02-21 19:16:59,101 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 507 transitions. Word has length 161 [2021-02-21 19:16:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:16:59,102 INFO L480 AbstractCegarLoop]: Abstraction has 453 states and 507 transitions. [2021-02-21 19:16:59,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:16:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 507 transitions. [2021-02-21 19:16:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:16:59,106 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:16:59,106 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] [2021-02-21 19:16:59,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:16:59,107 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:16:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:16:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash 289496046, now seen corresponding path program 1 times [2021-02-21 19:16:59,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:16:59,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747594699] [2021-02-21 19:16:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:16:59,112 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:16:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:16:59,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,557 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:16:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:16:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:16:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:16:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:16:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:16:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:16:59,652 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:16:59,653 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:16:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:16:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:16:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:16:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:16:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:16:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:16:59,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:16:59,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:16:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:16:59,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747594699] [2021-02-21 19:16:59,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:16:59,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:16:59,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796851831] [2021-02-21 19:16:59,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:16:59,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:16:59,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:16:59,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:16:59,787 INFO L87 Difference]: Start difference. First operand 453 states and 507 transitions. Second operand 14 states. [2021-02-21 19:17:00,418 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:00,870 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:17:01,236 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:17:01,647 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:02,045 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:02,401 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:03,237 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:17:04,629 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:05,088 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:05,654 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:06,160 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:17:06,630 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:07,021 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:17:07,429 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:17:07,848 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:08,320 WARN L202 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:08,825 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:09,394 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:17:09,876 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:10,356 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:12,720 INFO L93 Difference]: Finished difference Result 1555 states and 1900 transitions. [2021-02-21 19:17:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:17:12,721 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:17:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:12,731 INFO L225 Difference]: With dead ends: 1555 [2021-02-21 19:17:12,732 INFO L226 Difference]: Without dead ends: 1217 [2021-02-21 19:17:12,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:17:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-02-21 19:17:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1070. [2021-02-21 19:17:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2021-02-21 19:17:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1238 transitions. [2021-02-21 19:17:13,233 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1238 transitions. Word has length 166 [2021-02-21 19:17:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:13,234 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1238 transitions. [2021-02-21 19:17:13,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:17:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1238 transitions. [2021-02-21 19:17:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:17:13,239 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:13,240 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] [2021-02-21 19:17:13,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:17:13,240 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1838016033, now seen corresponding path program 1 times [2021-02-21 19:17:13,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:13,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176100572] [2021-02-21 19:17:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:13,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,607 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:17:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:17:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:17:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:17:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:13,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:13,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:17:13,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176100572] [2021-02-21 19:17:13,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:13,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:17:13,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707575586] [2021-02-21 19:17:13,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:17:13,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:13,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:17:13,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:17:13,743 INFO L87 Difference]: Start difference. First operand 1070 states and 1238 transitions. Second operand 6 states. [2021-02-21 19:17:14,389 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:15,799 INFO L93 Difference]: Finished difference Result 1743 states and 2102 transitions. [2021-02-21 19:17:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 19:17:15,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:17:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:15,806 INFO L225 Difference]: With dead ends: 1743 [2021-02-21 19:17:15,806 INFO L226 Difference]: Without dead ends: 788 [2021-02-21 19:17:15,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:17:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-02-21 19:17:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 685. [2021-02-21 19:17:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2021-02-21 19:17:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 744 transitions. [2021-02-21 19:17:16,146 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 744 transitions. Word has length 171 [2021-02-21 19:17:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:16,148 INFO L480 AbstractCegarLoop]: Abstraction has 685 states and 744 transitions. [2021-02-21 19:17:16,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:17:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 744 transitions. [2021-02-21 19:17:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:17:16,154 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:16,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:17:16,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:17:16,155 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1528694846, now seen corresponding path program 1 times [2021-02-21 19:17:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:16,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253042243] [2021-02-21 19:17:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:16,882 WARN L202 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 117 [2021-02-21 19:17:16,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:16,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-02-21 19:17:17,496 WARN L202 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2021-02-21 19:17:17,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:17,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 276