/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_spec3_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:56:38,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:56:38,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:56:38,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:56:38,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:56:38,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:56:38,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:56:38,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:56:38,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:56:38,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:56:38,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:56:38,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:56:38,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:56:38,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:56:38,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:56:38,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:56:38,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:56:38,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:56:38,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:56:38,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:56:38,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:56:38,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:56:38,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:56:38,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:56:38,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:56:38,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:56:38,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:56:38,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:56:38,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:56:38,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:56:38,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:56:38,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:56:38,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:56:38,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:56:38,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:56:38,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:56:38,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:56:38,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:56:38,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:56:38,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:56:38,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:56:38,638 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 18:56:38,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:56:38,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:56:38,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:56:38,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:56:38,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:56:38,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:56:38,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:56:38,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:56:38,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:56:38,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:56:38,653 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:56:38,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:56:38,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:56:38,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:56:38,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:56:38,654 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:56:38,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:56:38,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:56:38,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:38,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:56:38,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:56:38,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:56:38,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:56:39,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:56:39,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:56:39,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:56:39,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:56:39,099 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:56:39,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product13.cil.c [2021-02-21 18:56:39,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dac1651/fc6bc2ccdf12430096594e050970e8e3/FLAG8b5ad722c [2021-02-21 18:56:39,805 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:56:39,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product13.cil.c [2021-02-21 18:56:39,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dac1651/fc6bc2ccdf12430096594e050970e8e3/FLAG8b5ad722c [2021-02-21 18:56:40,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dac1651/fc6bc2ccdf12430096594e050970e8e3 [2021-02-21 18:56:40,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:56:40,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:56:40,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:40,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:56:40,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:56:40,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b935ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40, skipping insertion in model container [2021-02-21 18:56:40,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:56:40,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:56:40,495 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_spec3_product13.cil.c[3019,3032] [2021-02-21 18:56:40,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:40,671 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:56:40,698 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_spec3_product13.cil.c[3019,3032] [2021-02-21 18:56:40,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:40,805 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:56:40,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40 WrapperNode [2021-02-21 18:56:40,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:40,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:56:40,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:56:40,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:56:40,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (1/1) ... [2021-02-21 18:56:40,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:56:40,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:56:40,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:56:40,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:56:40,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (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 18:56:40,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:56:40,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:56:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:56:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:56:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:56:40,994 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:56:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:56:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:56:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:56:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:56:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:56:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:56:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:56:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:56:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:56:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:56:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:56:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:56:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:56:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:56:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:56:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:56:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:56:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:56:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:56:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:56:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:56:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:56:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:56:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:56:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:56:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:56:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:56:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:56:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:56:42,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:56:42,248 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:56:42,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:42 BoogieIcfgContainer [2021-02-21 18:56:42,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:56:42,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:56:42,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:56:42,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:56:42,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:56:40" (1/3) ... [2021-02-21 18:56:42,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69773f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:42, skipping insertion in model container [2021-02-21 18:56:42,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:40" (2/3) ... [2021-02-21 18:56:42,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69773f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:42, skipping insertion in model container [2021-02-21 18:56:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:42" (3/3) ... [2021-02-21 18:56:42,264 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product13.cil.c [2021-02-21 18:56:42,271 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:56:42,276 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:56:42,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:56:42,320 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:56:42,321 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:56:42,321 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:56:42,321 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:56:42,321 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:56:42,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:56:42,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:56:42,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:56:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-21 18:56:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:56:42,366 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:42,367 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] [2021-02-21 18:56:42,367 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 191098234, now seen corresponding path program 1 times [2021-02-21 18:56:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:42,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516142917] [2021-02-21 18:56:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:42,477 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,147 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:43,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:43,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:43,343 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 18:56:43,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516142917] [2021-02-21 18:56:43,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:43,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:43,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515470545] [2021-02-21 18:56:43,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:43,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:43,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:43,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:43,371 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-21 18:56:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:44,947 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2021-02-21 18:56:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:56:44,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:56:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:44,976 INFO L225 Difference]: With dead ends: 419 [2021-02-21 18:56:44,977 INFO L226 Difference]: Without dead ends: 268 [2021-02-21 18:56:44,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-21 18:56:45,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2021-02-21 18:56:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-21 18:56:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-21 18:56:45,186 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 158 [2021-02-21 18:56:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:45,187 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-21 18:56:45,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:56:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-21 18:56:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:56:45,192 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:45,192 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] [2021-02-21 18:56:45,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:56:45,192 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:45,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1058296177, now seen corresponding path program 1 times [2021-02-21 18:56:45,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:45,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651132790] [2021-02-21 18:56:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:45,199 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:45,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,697 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:56:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:56:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:56:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:45,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:45,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:45,827 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 18:56:45,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651132790] [2021-02-21 18:56:45,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:45,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:56:45,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677307874] [2021-02-21 18:56:45,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:56:45,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:45,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:56:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:56:45,833 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-21 18:56:46,585 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:47,418 INFO L93 Difference]: Finished difference Result 335 states and 375 transitions. [2021-02-21 18:56:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:56:47,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:56:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:47,422 INFO L225 Difference]: With dead ends: 335 [2021-02-21 18:56:47,422 INFO L226 Difference]: Without dead ends: 251 [2021-02-21 18:56:47,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 18:56:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-21 18:56:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-21 18:56:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 18:56:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-21 18:56:47,509 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 159 [2021-02-21 18:56:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:47,510 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-21 18:56:47,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:56:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-21 18:56:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:56:47,513 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:47,513 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] [2021-02-21 18:56:47,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:56:47,513 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 183006728, now seen corresponding path program 1 times [2021-02-21 18:56:47,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:47,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252742872] [2021-02-21 18:56:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:47,518 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:47,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:47,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:47,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:47,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:47,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:47,936 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:47,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:47,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:47,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:48,063 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:56:48,064 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:56:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:56:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:48,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252742872] [2021-02-21 18:56:48,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:48,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:48,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910659895] [2021-02-21 18:56:48,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:48,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:48,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:48,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:48,151 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-21 18:56:48,733 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:49,156 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:49,540 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:56:49,900 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:50,273 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:50,633 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:51,976 INFO L93 Difference]: Finished difference Result 355 states and 400 transitions. [2021-02-21 18:56:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:56:51,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:56:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:51,987 INFO L225 Difference]: With dead ends: 355 [2021-02-21 18:56:51,987 INFO L226 Difference]: Without dead ends: 251 [2021-02-21 18:56:51,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:56:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-21 18:56:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-21 18:56:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 18:56:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-02-21 18:56:52,091 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 168 [2021-02-21 18:56:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:52,093 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-02-21 18:56:52,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-02-21 18:56:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:56:52,097 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:52,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:52,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:52,098 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:52,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1423256127, now seen corresponding path program 1 times [2021-02-21 18:56:52,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:52,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694755407] [2021-02-21 18:56:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:52,104 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,560 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:52,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:52,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:56:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:56:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:56:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:56:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:52,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:56:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:52,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:52,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:52,758 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 18:56:52,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694755407] [2021-02-21 18:56:52,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:52,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:52,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836401553] [2021-02-21 18:56:52,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:52,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:52,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:52,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:52,761 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 9 states. [2021-02-21 18:56:53,354 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:55,162 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:55,618 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:56,013 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:56,384 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:56,747 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:57,280 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:57,679 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:58,036 INFO L93 Difference]: Finished difference Result 494 states and 585 transitions. [2021-02-21 18:56:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:56:58,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-21 18:56:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:58,041 INFO L225 Difference]: With dead ends: 494 [2021-02-21 18:56:58,041 INFO L226 Difference]: Without dead ends: 390 [2021-02-21 18:56:58,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:56:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-02-21 18:56:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 315. [2021-02-21 18:56:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2021-02-21 18:56:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 346 transitions. [2021-02-21 18:56:58,181 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 346 transitions. Word has length 176 [2021-02-21 18:56:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:58,181 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 346 transitions. [2021-02-21 18:56:58,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 346 transitions. [2021-02-21 18:56:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-02-21 18:56:58,185 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:58,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:58,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:58,185 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:58,186 INFO L82 PathProgramCache]: Analyzing trace with hash 129557805, now seen corresponding path program 1 times [2021-02-21 18:56:58,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:58,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910979992] [2021-02-21 18:56:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:58,190 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,660 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 18:56:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-21 18:56:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:56:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:56:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:56:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-02-21 18:56:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,900 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 18:56:58,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910979992] [2021-02-21 18:56:58,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:58,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:56:58,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156257691] [2021-02-21 18:56:58,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:56:58,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:56:58,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:56:58,906 INFO L87 Difference]: Start difference. First operand 315 states and 346 transitions. Second operand 6 states. [2021-02-21 18:56:59,491 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:00,185 INFO L93 Difference]: Finished difference Result 484 states and 550 transitions. [2021-02-21 18:57:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 18:57:00,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2021-02-21 18:57:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:00,188 INFO L225 Difference]: With dead ends: 484 [2021-02-21 18:57:00,188 INFO L226 Difference]: Without dead ends: 284 [2021-02-21 18:57:00,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:57:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-21 18:57:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 263. [2021-02-21 18:57:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-21 18:57:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 278 transitions. [2021-02-21 18:57:00,290 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 278 transitions. Word has length 186 [2021-02-21 18:57:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:00,290 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 278 transitions. [2021-02-21 18:57:00,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:57:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 278 transitions. [2021-02-21 18:57:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:57:00,293 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:00,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:00,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:57:00,293 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1108331973, now seen corresponding path program 1 times [2021-02-21 18:57:00,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:00,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827343595] [2021-02-21 18:57:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:00,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:00,371 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:00,436 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:00,612 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:57:00,612 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:57:00,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:57:00,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:57:00 BoogieIcfgContainer [2021-02-21 18:57:00,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:57:00,637 INFO L168 Benchmark]: Toolchain (without parser) took 20545.22 ms. Allocated memory was 163.6 MB in the beginning and 425.7 MB in the end (delta: 262.1 MB). Free memory was 139.8 MB in the beginning and 266.3 MB in the end (delta: -126.5 MB). Peak memory consumption was 136.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:00,638 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:57:00,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.83 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 118.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:00,639 INFO L168 Benchmark]: Boogie Preprocessor took 91.44 ms. Allocated memory is still 163.6 MB. Free memory was 118.0 MB in the beginning and 114.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:00,639 INFO L168 Benchmark]: RCFGBuilder took 1356.40 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.1 MB in the beginning and 171.7 MB in the end (delta: -57.6 MB). Peak memory consumption was 63.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:00,640 INFO L168 Benchmark]: TraceAbstraction took 18378.90 ms. Allocated memory was 197.1 MB in the beginning and 425.7 MB in the end (delta: 228.6 MB). Free memory was 171.2 MB in the beginning and 266.3 MB in the end (delta: -95.1 MB). Peak memory consumption was 133.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:00,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 697.83 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 118.0 MB in the end (delta: 20.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.44 ms. Allocated memory is still 163.6 MB. Free memory was 118.0 MB in the beginning and 114.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1356.40 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.1 MB in the beginning and 171.7 MB in the end (delta: -57.6 MB). Peak memory consumption was 63.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18378.90 ms. Allocated memory was 197.1 MB in the beginning and 425.7 MB in the end (delta: 228.6 MB). Free memory was 171.2 MB in the beginning and 266.3 MB in the end (delta: -95.1 MB). Peak memory consumption was 133.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 170]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L175] int cleanupTimeShifts = 4; [L277] int pumpRunning = 0; [L278] int systemActive = 1; [L696] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L251] int retValue_acc ; [L252] int tmp ; [L256] FCALL select_helpers() [L257] FCALL select_features() [L258] CALL, EXPR valid_product() [L157] int retValue_acc ; [L160] retValue_acc = 1 [L161] return (retValue_acc); [L258] RET, EXPR valid_product() [L258] tmp = valid_product() [L260] COND TRUE \read(tmp) [L262] FCALL setup() [L263] CALL runTest() [L245] CALL test() [L463] int splverifierCounter ; [L464] int tmp ; [L465] int tmp___0 ; [L466] int tmp___1 ; [L467] int tmp___2 ; [L470] splverifierCounter = 0 [L472] COND TRUE 1 [L474] COND TRUE splverifierCounter < 4 [L480] tmp = __VERIFIER_nondet_int() [L482] COND TRUE \read(tmp) [L484] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L484] RET waterRise() [L490] tmp___0 = __VERIFIER_nondet_int() [L492] COND FALSE !(\read(tmp___0)) [L500] tmp___2 = __VERIFIER_nondet_int() [L502] COND TRUE \read(tmp___2) [L515] CALL timeShift() [L285] COND FALSE !(\read(pumpRunning)) [L292] COND TRUE \read(systemActive) [L294] CALL processEnvironment() [L314] int tmp ; [L317] COND FALSE !(\read(pumpRunning)) [L332] FCALL processEnvironment__wrappee__methaneQuery() [L294] RET processEnvironment() [L300] CALL __utac_acc__Specification3_spec__1() [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L435] RET, EXPR isMethaneLevelCritical() [L435] tmp = isMethaneLevelCritical() [L437] COND FALSE !(\read(tmp)) [L441] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L441] RET, EXPR getWaterLevel() [L441] tmp___0 = getWaterLevel() [L443] COND TRUE tmp___0 == 2 [L445] CALL, EXPR isPumpRunning() [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); [L445] RET, EXPR isPumpRunning() [L445] tmp___1 = isPumpRunning() [L447] COND FALSE !(\read(tmp___1)) [L451] CALL __automaton_fail() [L170] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 608 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1021 SDtfs, 1322 SDslu, 1281 SDs, 0 SdLazy, 2342 SolverSat, 392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...