/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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:17:41,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:17:41,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:17:41,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:17:41,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:17:41,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:17:41,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:17:41,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:17:41,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:17:41,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:17:41,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:17:41,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:17:41,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:17:41,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:17:41,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:17:41,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:17:41,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:17:41,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:17:41,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:17:41,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:17:41,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:17:41,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:17:41,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:17:41,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:17:41,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:17:41,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:17:41,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:17:41,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:17:41,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:17:41,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:17:41,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:17:41,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:17:41,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:17:41,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:17:41,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:17:41,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:17:41,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:17:41,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:17:41,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:17:41,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:17:41,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:17:41,961 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 19:17:41,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:17:41,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:17:41,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:17:41,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:17:41,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:17:41,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:17:41,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:17:41,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:17:41,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:17:41,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:17:41,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:17:41,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:17:41,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:17:41,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:17:41,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:17:41,994 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:17:41,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:17:41,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:17:41,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:17:41,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:17:41,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:17:41,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:17:41,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:17:42,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:17:42,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:17:42,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:17:42,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:17:42,482 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:17:42,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product26.cil.c [2021-02-21 19:17:42,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de6ee1e9/cfee05a5a8b94e1cbc16212f422d8eca/FLAG35939f415 [2021-02-21 19:17:43,333 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:17:43,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product26.cil.c [2021-02-21 19:17:43,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de6ee1e9/cfee05a5a8b94e1cbc16212f422d8eca/FLAG35939f415 [2021-02-21 19:17:43,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de6ee1e9/cfee05a5a8b94e1cbc16212f422d8eca [2021-02-21 19:17:43,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:17:43,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:17:43,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:17:43,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:17:43,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:17:43,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:17:43" (1/1) ... [2021-02-21 19:17:43,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418464a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:43, skipping insertion in model container [2021-02-21 19:17:43,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:17:43" (1/1) ... [2021-02-21 19:17:43,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:17:43,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:17:43,888 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_product26.cil.c[1281,1294] [2021-02-21 19:17:44,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:17:44,032 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:17:44,049 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_product26.cil.c[1281,1294] [2021-02-21 19:17:44,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:17:44,228 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:17:44,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44 WrapperNode [2021-02-21 19:17:44,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:17:44,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:17:44,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:17:44,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:17:44,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (1/1) ... [2021-02-21 19:17:44,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:17:44,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:17:44,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:17:44,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:17:44,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (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 19:17:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:17:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:17:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:17:44,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:17:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:17:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:17:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:17:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:17:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:17:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:17:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:17:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:17:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:17:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:17:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:17:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:17:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:17:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:17:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:17:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:17:44,481 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:17:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:17:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:17:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:17:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:17:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:17:45,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:17:45,784 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:17:45,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:17:45 BoogieIcfgContainer [2021-02-21 19:17:45,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:17:45,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:17:45,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:17:45,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:17:45,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:17:43" (1/3) ... [2021-02-21 19:17:45,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bcc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:17:45, skipping insertion in model container [2021-02-21 19:17:45,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:17:44" (2/3) ... [2021-02-21 19:17:45,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658bcc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:17:45, skipping insertion in model container [2021-02-21 19:17:45,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:17:45" (3/3) ... [2021-02-21 19:17:45,797 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product26.cil.c [2021-02-21 19:17:45,805 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:17:45,811 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:17:45,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:17:45,859 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:17:45,860 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:17:45,860 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:17:45,860 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:17:45,860 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:17:45,860 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:17:45,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:17:45,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:17:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-21 19:17:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:17:45,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:45,908 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 19:17:45,909 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1975133697, now seen corresponding path program 1 times [2021-02-21 19:17:45,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:45,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949029055] [2021-02-21 19:17:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:46,002 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,725 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:17:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:17:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:46,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:46,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:46,890 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 19:17:46,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949029055] [2021-02-21 19:17:46,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:46,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:17:46,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274278675] [2021-02-21 19:17:46,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:17:46,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:46,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:17:46,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:17:46,925 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-21 19:17:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:48,595 INFO L93 Difference]: Finished difference Result 428 states and 509 transitions. [2021-02-21 19:17:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:17:48,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:17:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:48,628 INFO L225 Difference]: With dead ends: 428 [2021-02-21 19:17:48,629 INFO L226 Difference]: Without dead ends: 273 [2021-02-21 19:17:48,635 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 19:17:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-21 19:17:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2021-02-21 19:17:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-21 19:17:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 250 transitions. [2021-02-21 19:17:48,816 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 250 transitions. Word has length 147 [2021-02-21 19:17:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:48,817 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 250 transitions. [2021-02-21 19:17:48,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:17:48,817 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 250 transitions. [2021-02-21 19:17:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:17:48,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:48,822 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 19:17:48,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:17:48,822 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:48,823 INFO L82 PathProgramCache]: Analyzing trace with hash 896946953, now seen corresponding path program 1 times [2021-02-21 19:17:48,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:48,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649728665] [2021-02-21 19:17:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:48,829 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:48,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:48,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:48,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:48,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:48,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:48,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,264 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:17:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:17:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:49,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:49,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:49,460 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 19:17:49,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649728665] [2021-02-21 19:17:49,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:49,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:17:49,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090736353] [2021-02-21 19:17:49,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:17:49,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:49,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:17:49,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:17:49,468 INFO L87 Difference]: Start difference. First operand 233 states and 250 transitions. Second operand 4 states. [2021-02-21 19:17:50,265 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:17:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:51,210 INFO L93 Difference]: Finished difference Result 340 states and 379 transitions. [2021-02-21 19:17:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:17:51,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:17:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:51,216 INFO L225 Difference]: With dead ends: 340 [2021-02-21 19:17:51,216 INFO L226 Difference]: Without dead ends: 256 [2021-02-21 19:17:51,218 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 19:17:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-02-21 19:17:51,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 223. [2021-02-21 19:17:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:17:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2021-02-21 19:17:51,335 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 148 [2021-02-21 19:17:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:51,338 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2021-02-21 19:17:51,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:17:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2021-02-21 19:17:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:17:51,341 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:51,341 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 19:17:51,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:17:51,342 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2054905789, now seen corresponding path program 1 times [2021-02-21 19:17:51,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:51,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466499000] [2021-02-21 19:17:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:51,348 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:51,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:51,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:51,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,805 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:17:51,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:17:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:17:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:51,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:51,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:17:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:52,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:52,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:17:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:52,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:52,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:52,099 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 19:17:52,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466499000] [2021-02-21 19:17:52,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:52,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:17:52,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126747815] [2021-02-21 19:17:52,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:17:52,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:17:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:17:52,106 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand 10 states. [2021-02-21 19:17:52,873 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:53,338 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:17:53,709 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:17:54,088 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:54,447 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:17:54,826 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:17:56,449 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2021-02-21 19:17:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:17:56,450 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:17:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:17:56,454 INFO L225 Difference]: With dead ends: 386 [2021-02-21 19:17:56,454 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 19:17:56,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:17:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 19:17:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2021-02-21 19:17:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-21 19:17:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 236 transitions. [2021-02-21 19:17:56,540 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 236 transitions. Word has length 161 [2021-02-21 19:17:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:17:56,541 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 236 transitions. [2021-02-21 19:17:56,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:17:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 236 transitions. [2021-02-21 19:17:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:17:56,543 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:17:56,544 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] [2021-02-21 19:17:56,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:17:56,544 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:17:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:17:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -654249008, now seen corresponding path program 1 times [2021-02-21 19:17:56,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:17:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793501896] [2021-02-21 19:17:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:17:56,549 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:17:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:56,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:56,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:56,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:56,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:56,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:17:56,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:56,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,057 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:17:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:17:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:17:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:17:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:17:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:17:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:17:57,196 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:17:57,197 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:17:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:17:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:17:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:17:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:17:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:17:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:57,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:17:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:17:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:17:57,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:17:57,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:17:57,409 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 19:17:57,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793501896] [2021-02-21 19:17:57,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:17:57,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:17:57,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412435165] [2021-02-21 19:17:57,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:17:57,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:17:57,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:17:57,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:17:57,412 INFO L87 Difference]: Start difference. First operand 223 states and 236 transitions. Second operand 15 states. [2021-02-21 19:17:58,138 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:17:58,608 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:17:58,954 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:17:59,388 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:17:59,802 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:00,155 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:18:00,991 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:18:02,235 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:18:02,631 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:03,082 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:03,571 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:18:03,953 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:18:04,329 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:18:04,727 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:18:05,110 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:05,485 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:18:05,924 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:06,426 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:18:06,854 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:18:07,273 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:18:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:18:09,589 INFO L93 Difference]: Finished difference Result 762 states and 962 transitions. [2021-02-21 19:18:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:18:09,590 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-21 19:18:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:18:09,599 INFO L225 Difference]: With dead ends: 762 [2021-02-21 19:18:09,599 INFO L226 Difference]: Without dead ends: 654 [2021-02-21 19:18:09,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:18:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-02-21 19:18:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 415. [2021-02-21 19:18:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2021-02-21 19:18:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 456 transitions. [2021-02-21 19:18:09,782 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 456 transitions. Word has length 169 [2021-02-21 19:18:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:18:09,783 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 456 transitions. [2021-02-21 19:18:09,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:18:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 456 transitions. [2021-02-21 19:18:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:18:09,786 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:18:09,787 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] [2021-02-21 19:18:09,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:18:09,787 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:18:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:18:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1279001198, now seen corresponding path program 1 times [2021-02-21 19:18:09,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:18:09,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979145904] [2021-02-21 19:18:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:18:09,792 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:18:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:09,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:09,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:09,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:09,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:09,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:09,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:09,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,159 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:18:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:18:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:18:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:18:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:18:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:18:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:18:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:18:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:18:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:18:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:18:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:18:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:18:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:18:10,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:10,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:10,348 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 19:18:10,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979145904] [2021-02-21 19:18:10,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:18:10,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:18:10,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404775182] [2021-02-21 19:18:10,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:18:10,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:18:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:18:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:18:10,351 INFO L87 Difference]: Start difference. First operand 415 states and 456 transitions. Second operand 7 states. [2021-02-21 19:18:10,990 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:18:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:18:12,068 INFO L93 Difference]: Finished difference Result 695 states and 809 transitions. [2021-02-21 19:18:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:18:12,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-21 19:18:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:18:12,078 INFO L225 Difference]: With dead ends: 695 [2021-02-21 19:18:12,078 INFO L226 Difference]: Without dead ends: 395 [2021-02-21 19:18:12,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:18:12,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-21 19:18:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-21 19:18:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-21 19:18:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-21 19:18:12,223 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 174 [2021-02-21 19:18:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:18:12,223 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-21 19:18:12,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:18:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-21 19:18:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-21 19:18:12,227 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:18:12,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 19:18:12,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:18:12,228 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:18:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:18:12,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1998599568, now seen corresponding path program 1 times [2021-02-21 19:18:12,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:18:12,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695575424] [2021-02-21 19:18:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:18:12,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:12,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:12,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:12,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:12,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:12,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:18:12,861 WARN L202 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2021-02-21 19:18:12,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:12,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-02-21 19:18:12,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:18:12,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1