/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:32:02,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:32:02,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:32:02,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:32:02,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:32:02,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:32:02,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:32:02,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:32:02,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:32:02,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:32:02,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:32:02,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:32:02,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:32:02,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:32:02,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:32:02,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:32:02,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:32:02,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:32:02,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:32:02,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:32:02,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:32:02,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:32:02,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:32:02,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:32:02,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:32:02,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:32:02,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:32:02,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:32:02,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:32:03,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:32:03,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:32:03,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:32:03,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:32:03,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:32:03,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:32:03,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:32:03,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:32:03,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:32:03,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:32:03,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:32:03,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:32:03,011 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 19:32:03,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:32:03,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:32:03,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:32:03,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:32:03,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:32:03,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:32:03,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:32:03,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:32:03,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:32:03,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:32:03,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:32:03,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:32:03,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:32:03,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:32:03,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:32:03,032 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:32:03,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:32:03,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:32:03,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:32:03,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:32:03,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:32:03,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:32:03,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:32:03,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:32:03,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:32:03,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:32:03,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:32:03,546 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:32:03,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2021-02-21 19:32:03,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff9c8f0/2b9d24118c8842e1b9a37e7ab09036e7/FLAG8d14816c0 [2021-02-21 19:32:04,397 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:32:04,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2021-02-21 19:32:04,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff9c8f0/2b9d24118c8842e1b9a37e7ab09036e7/FLAG8d14816c0 [2021-02-21 19:32:04,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86ff9c8f0/2b9d24118c8842e1b9a37e7ab09036e7 [2021-02-21 19:32:04,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:32:04,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:32:04,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:32:04,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:32:04,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:32:04,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:32:04" (1/1) ... [2021-02-21 19:32:04,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:04, skipping insertion in model container [2021-02-21 19:32:04,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:32:04" (1/1) ... [2021-02-21 19:32:04,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:32:04,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:32:05,238 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_product44.cil.c[15482,15495] [2021-02-21 19:32:05,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:32:05,271 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:32:05,361 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_product44.cil.c[15482,15495] [2021-02-21 19:32:05,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:32:05,432 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:32:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05 WrapperNode [2021-02-21 19:32:05,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:32:05,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:32:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:32:05,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:32:05,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (1/1) ... [2021-02-21 19:32:05,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:32:05,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:32:05,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:32:05,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:32:05,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (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 19:32:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:32:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:32:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:32:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:32:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:32:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:32:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:32:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:32:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:32:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:32:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:32:05,732 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:32:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:32:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:32:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:32:05,739 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:32:05,740 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:32:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:32:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:32:05,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:32:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:32:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:32:05,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:32:07,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:32:07,252 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:32:07,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:32:07 BoogieIcfgContainer [2021-02-21 19:32:07,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:32:07,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:32:07,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:32:07,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:32:07,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:32:04" (1/3) ... [2021-02-21 19:32:07,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf58d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:32:07, skipping insertion in model container [2021-02-21 19:32:07,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:32:05" (2/3) ... [2021-02-21 19:32:07,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf58d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:32:07, skipping insertion in model container [2021-02-21 19:32:07,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:32:07" (3/3) ... [2021-02-21 19:32:07,270 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2021-02-21 19:32:07,280 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:32:07,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:32:07,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:32:07,366 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:32:07,367 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:32:07,367 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:32:07,370 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:32:07,370 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:32:07,370 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:32:07,371 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:32:07,371 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:32:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2021-02-21 19:32:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:32:07,446 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:07,447 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 19:32:07,448 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash -421456433, now seen corresponding path program 1 times [2021-02-21 19:32:07,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:07,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886070533] [2021-02-21 19:32:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:07,545 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,360 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:32:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:32:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,668 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 19:32:08,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886070533] [2021-02-21 19:32:08,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:08,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:32:08,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820178047] [2021-02-21 19:32:08,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:32:08,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:08,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:32:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:32:08,698 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2021-02-21 19:32:10,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:10,544 INFO L93 Difference]: Finished difference Result 500 states and 588 transitions. [2021-02-21 19:32:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:32:10,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:32:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:10,565 INFO L225 Difference]: With dead ends: 500 [2021-02-21 19:32:10,565 INFO L226 Difference]: Without dead ends: 311 [2021-02-21 19:32:10,571 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 19:32:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-21 19:32:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 267. [2021-02-21 19:32:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-21 19:32:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 287 transitions. [2021-02-21 19:32:10,762 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 287 transitions. Word has length 147 [2021-02-21 19:32:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:10,763 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 287 transitions. [2021-02-21 19:32:10,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:32:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 287 transitions. [2021-02-21 19:32:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:32:10,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:10,773 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 19:32:10,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:32:10,774 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash -557085128, now seen corresponding path program 1 times [2021-02-21 19:32:10,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:10,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102441221] [2021-02-21 19:32:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:10,780 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:10,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:10,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:10,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:10,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:10,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:10,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,211 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:11,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:32:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:32:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:11,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:11,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:11,340 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 19:32:11,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102441221] [2021-02-21 19:32:11,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:11,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:32:11,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775956651] [2021-02-21 19:32:11,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:32:11,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:32:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:32:11,344 INFO L87 Difference]: Start difference. First operand 267 states and 287 transitions. Second operand 4 states. [2021-02-21 19:32:12,142 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:13,318 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2021-02-21 19:32:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:32:13,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:32:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:13,324 INFO L225 Difference]: With dead ends: 403 [2021-02-21 19:32:13,325 INFO L226 Difference]: Without dead ends: 294 [2021-02-21 19:32:13,327 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 19:32:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-02-21 19:32:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2021-02-21 19:32:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-02-21 19:32:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 274 transitions. [2021-02-21 19:32:13,466 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 274 transitions. Word has length 148 [2021-02-21 19:32:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:13,469 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 274 transitions. [2021-02-21 19:32:13,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:32:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 274 transitions. [2021-02-21 19:32:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:32:13,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:13,478 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 19:32:13,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:32:13,479 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:13,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:13,483 INFO L82 PathProgramCache]: Analyzing trace with hash -283718012, now seen corresponding path program 1 times [2021-02-21 19:32:13,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:13,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781434282] [2021-02-21 19:32:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:13,497 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:13,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:13,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:13,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:13,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:13,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:13,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:13,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,028 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:14,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:14,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:32:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:32:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:32:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:14,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:14,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:14,306 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 19:32:14,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781434282] [2021-02-21 19:32:14,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:14,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:32:14,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798687746] [2021-02-21 19:32:14,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:32:14,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:14,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:32:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:32:14,319 INFO L87 Difference]: Start difference. First operand 257 states and 274 transitions. Second operand 10 states. [2021-02-21 19:32:15,047 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:15,523 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:15,907 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:32:16,338 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:16,700 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:17,076 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:18,174 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:20,998 INFO L93 Difference]: Finished difference Result 696 states and 800 transitions. [2021-02-21 19:32:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:32:20,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:32:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:21,008 INFO L225 Difference]: With dead ends: 696 [2021-02-21 19:32:21,009 INFO L226 Difference]: Without dead ends: 554 [2021-02-21 19:32:21,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:32:21,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-02-21 19:32:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 447. [2021-02-21 19:32:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2021-02-21 19:32:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 491 transitions. [2021-02-21 19:32:21,273 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 491 transitions. Word has length 161 [2021-02-21 19:32:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:21,274 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 491 transitions. [2021-02-21 19:32:21,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:32:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 491 transitions. [2021-02-21 19:32:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:32:21,277 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:21,278 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 19:32:21,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:32:21,278 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:21,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1009952521, now seen corresponding path program 1 times [2021-02-21 19:32:21,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:21,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338838904] [2021-02-21 19:32:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:21,284 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:21,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,759 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:32:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:21,892 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:32:21,896 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:32:21,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:32:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:32:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:21,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:21,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:32:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:21,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:21,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:22,064 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 19:32:22,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338838904] [2021-02-21 19:32:22,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:22,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:32:22,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248403685] [2021-02-21 19:32:22,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:32:22,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:22,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:32:22,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:32:22,067 INFO L87 Difference]: Start difference. First operand 447 states and 491 transitions. Second operand 14 states. [2021-02-21 19:32:22,850 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:23,329 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:23,721 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:24,089 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:24,487 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:24,870 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:25,701 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:27,042 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:27,476 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:28,007 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:28,462 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:28,856 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:29,226 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:29,623 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:30,023 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:30,402 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:30,902 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:31,433 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:31,862 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:32,332 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:35,191 INFO L93 Difference]: Finished difference Result 1529 states and 1878 transitions. [2021-02-21 19:32:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:32:35,192 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:32:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:35,201 INFO L225 Difference]: With dead ends: 1529 [2021-02-21 19:32:35,201 INFO L226 Difference]: Without dead ends: 1197 [2021-02-21 19:32:35,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:32:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-02-21 19:32:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1058. [2021-02-21 19:32:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2021-02-21 19:32:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1216 transitions. [2021-02-21 19:32:35,770 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1216 transitions. Word has length 166 [2021-02-21 19:32:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:35,771 INFO L480 AbstractCegarLoop]: Abstraction has 1058 states and 1216 transitions. [2021-02-21 19:32:35,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:32:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1216 transitions. [2021-02-21 19:32:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:32:35,776 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:35,777 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 19:32:35,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:32:35,777 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1069399283, now seen corresponding path program 1 times [2021-02-21 19:32:35,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:35,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053284839] [2021-02-21 19:32:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:35,782 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:35,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:35,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:35,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,184 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:32:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:32:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:32:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:32:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:36,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:36,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:36,407 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 19:32:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053284839] [2021-02-21 19:32:36,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:36,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:32:36,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596171328] [2021-02-21 19:32:36,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:32:36,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:36,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:32:36,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:32:36,415 INFO L87 Difference]: Start difference. First operand 1058 states and 1216 transitions. Second operand 6 states. [2021-02-21 19:32:37,136 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:40,149 INFO L93 Difference]: Finished difference Result 2469 states and 2983 transitions. [2021-02-21 19:32:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:32:40,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:32:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:40,161 INFO L225 Difference]: With dead ends: 2469 [2021-02-21 19:32:40,162 INFO L226 Difference]: Without dead ends: 1526 [2021-02-21 19:32:40,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:32:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2021-02-21 19:32:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1423. [2021-02-21 19:32:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2021-02-21 19:32:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1647 transitions. [2021-02-21 19:32:41,028 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1647 transitions. Word has length 171 [2021-02-21 19:32:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:41,028 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1647 transitions. [2021-02-21 19:32:41,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:32:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1647 transitions. [2021-02-21 19:32:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-21 19:32:41,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:41,035 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 19:32:41,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:32:41,036 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash -797583530, now seen corresponding path program 1 times [2021-02-21 19:32:41,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:41,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784382878] [2021-02-21 19:32:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY