/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:57:38,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:57:38,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:57:38,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:57:38,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:57:38,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:57:38,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:57:38,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:57:38,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:57:38,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:57:38,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:57:38,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:57:38,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:57:38,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:57:38,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:57:38,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:57:38,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:57:38,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:57:38,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:57:38,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:57:38,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:57:38,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:57:38,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:57:38,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:57:38,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:57:38,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:57:38,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:57:38,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:57:38,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:57:38,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:57:38,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:57:38,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:57:38,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:57:38,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:57:38,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:57:38,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:57:38,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:57:38,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:57:38,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:57:38,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:57:38,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:57:38,628 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 18:57:38,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:57:38,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:57:38,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:57:38,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:57:38,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:57:38,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:57:38,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:57:38,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:57:38,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:57:38,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:57:38,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:57:38,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:57:38,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:57:38,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:57:38,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:57:38,645 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:57:38,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:57:38,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:57:38,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:57:38,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:57:38,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:57:38,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:57:38,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:57:39,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:57:39,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:57:39,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:57:39,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:57:39,078 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:57:39,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-21 18:57:39,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da30636/6978791781784344b8f89c07489c99f5/FLAGe63adf6a9 [2021-02-21 18:57:39,807 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:57:39,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-21 18:57:39,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da30636/6978791781784344b8f89c07489c99f5/FLAGe63adf6a9 [2021-02-21 18:57:40,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96da30636/6978791781784344b8f89c07489c99f5 [2021-02-21 18:57:40,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:57:40,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:57:40,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:40,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:57:40,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:57:40,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9df3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40, skipping insertion in model container [2021-02-21 18:57:40,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:57:40,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:57:40,491 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_product24.cil.c[1281,1294] [2021-02-21 18:57:40,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:40,695 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:57:40,710 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_product24.cil.c[1281,1294] [2021-02-21 18:57:40,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:40,845 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:57:40,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40 WrapperNode [2021-02-21 18:57:40,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:40,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:57:40,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:57:40,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:57:40,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (1/1) ... [2021-02-21 18:57:40,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:57:40,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:57:40,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:57:40,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:57:40,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (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 18:57:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:57:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:57:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:57:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:57:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:57:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:57:41,048 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:57:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:57:41,049 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:57:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:57:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:57:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:57:41,050 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:57:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:57:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:57:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:57:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:57:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:57:41,071 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:57:41,073 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:57:41,073 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:57:41,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:57:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:41,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:57:41,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:57:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:57:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:57:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:57:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:57:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:57:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:57:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:57:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:57:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:57:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:57:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:57:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:57:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:57:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:57:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:57:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:57:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:57:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:57:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:57:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:57:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:57:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:57:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:57:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:57:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:57:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:57:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:57:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:57:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:57:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:57:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:57:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:57:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:57:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:57:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:57:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:57:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:57:42,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:57:42,254 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:57:42,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:42 BoogieIcfgContainer [2021-02-21 18:57:42,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:57:42,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:57:42,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:57:42,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:57:42,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:57:40" (1/3) ... [2021-02-21 18:57:42,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc373c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:42, skipping insertion in model container [2021-02-21 18:57:42,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:40" (2/3) ... [2021-02-21 18:57:42,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc373c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:42, skipping insertion in model container [2021-02-21 18:57:42,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:42" (3/3) ... [2021-02-21 18:57:42,267 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2021-02-21 18:57:42,273 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:57:42,279 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:57:42,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:57:42,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:57:42,321 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:57:42,321 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:57:42,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:57:42,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:57:42,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:57:42,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:57:42,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:57:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-21 18:57:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:57:42,368 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:42,369 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 18:57:42,369 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1944508064, now seen corresponding path program 1 times [2021-02-21 18:57:42,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:42,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575576607] [2021-02-21 18:57:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:42,471 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:42,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:42,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:42,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:42,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,189 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:57:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:43,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:43,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:43,372 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 18:57:43,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575576607] [2021-02-21 18:57:43,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:43,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:57:43,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926939325] [2021-02-21 18:57:43,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:57:43,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:57:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:43,400 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-21 18:57:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:45,083 INFO L93 Difference]: Finished difference Result 506 states and 605 transitions. [2021-02-21 18:57:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:57:45,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:57:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:45,102 INFO L225 Difference]: With dead ends: 506 [2021-02-21 18:57:45,102 INFO L226 Difference]: Without dead ends: 314 [2021-02-21 18:57:45,108 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 18:57:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-21 18:57:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2021-02-21 18:57:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-21 18:57:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2021-02-21 18:57:45,353 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 158 [2021-02-21 18:57:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:45,356 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2021-02-21 18:57:45,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:57:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2021-02-21 18:57:45,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:57:45,369 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:45,370 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 18:57:45,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:57:45,371 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:45,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1109238629, now seen corresponding path program 1 times [2021-02-21 18:57:45,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:45,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106391248] [2021-02-21 18:57:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:45,383 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:45,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,861 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:45,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:57:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:57:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:57:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:45,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:45,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:45,964 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 18:57:45,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106391248] [2021-02-21 18:57:45,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:45,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:57:45,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144203009] [2021-02-21 18:57:45,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:57:45,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:57:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:57:45,967 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 4 states. [2021-02-21 18:57:46,715 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:47,940 INFO L93 Difference]: Finished difference Result 412 states and 467 transitions. [2021-02-21 18:57:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:57:47,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:57:47,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:47,946 INFO L225 Difference]: With dead ends: 412 [2021-02-21 18:57:47,946 INFO L226 Difference]: Without dead ends: 297 [2021-02-21 18:57:47,948 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 18:57:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-21 18:57:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2021-02-21 18:57:48,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 18:57:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 282 transitions. [2021-02-21 18:57:48,050 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 282 transitions. Word has length 159 [2021-02-21 18:57:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:48,051 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 282 transitions. [2021-02-21 18:57:48,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:57:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 282 transitions. [2021-02-21 18:57:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:57:48,054 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:48,054 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] [2021-02-21 18:57:48,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:57:48,055 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash 33539817, now seen corresponding path program 1 times [2021-02-21 18:57:48,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:48,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279499166] [2021-02-21 18:57:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:48,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:48,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:48,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:57:48,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,486 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:48,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:48,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:57:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:57:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:57:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:57:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:48,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:48,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:48,674 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 18:57:48,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279499166] [2021-02-21 18:57:48,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:48,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:57:48,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617089310] [2021-02-21 18:57:48,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:57:48,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:48,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:57:48,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:57:48,677 INFO L87 Difference]: Start difference. First operand 260 states and 282 transitions. Second operand 10 states. [2021-02-21 18:57:49,353 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:49,791 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:57:50,188 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:57:50,546 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:50,926 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:51,314 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:52,330 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:55,142 INFO L93 Difference]: Finished difference Result 716 states and 838 transitions. [2021-02-21 18:57:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:57:55,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:57:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:55,149 INFO L225 Difference]: With dead ends: 716 [2021-02-21 18:57:55,149 INFO L226 Difference]: Without dead ends: 571 [2021-02-21 18:57:55,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:57:55,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-02-21 18:57:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 476. [2021-02-21 18:57:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2021-02-21 18:57:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 535 transitions. [2021-02-21 18:57:55,376 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 535 transitions. Word has length 172 [2021-02-21 18:57:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:55,377 INFO L480 AbstractCegarLoop]: Abstraction has 476 states and 535 transitions. [2021-02-21 18:57:55,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:57:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 535 transitions. [2021-02-21 18:57:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 18:57:55,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:55,381 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] [2021-02-21 18:57:55,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:57:55,381 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash 43233474, now seen corresponding path program 1 times [2021-02-21 18:57:55,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:55,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438645739] [2021-02-21 18:57:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:55,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,780 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:57:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:57:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 18:57:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 18:57:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:55,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:55,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:55,967 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 18:57:55,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438645739] [2021-02-21 18:57:55,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:55,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:55,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653650926] [2021-02-21 18:57:55,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:55,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:55,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:55,970 INFO L87 Difference]: Start difference. First operand 476 states and 535 transitions. Second operand 9 states. [2021-02-21 18:57:56,538 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:58,727 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:59,109 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:59,627 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:00,058 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:00,422 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:58:00,786 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:01,159 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:58:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:02,256 INFO L93 Difference]: Finished difference Result 1284 states and 1548 transitions. [2021-02-21 18:58:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:58:02,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 18:58:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:02,263 INFO L225 Difference]: With dead ends: 1284 [2021-02-21 18:58:02,263 INFO L226 Difference]: Without dead ends: 923 [2021-02-21 18:58:02,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:58:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-02-21 18:58:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 820. [2021-02-21 18:58:02,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2021-02-21 18:58:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 948 transitions. [2021-02-21 18:58:02,606 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 948 transitions. Word has length 177 [2021-02-21 18:58:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:02,606 INFO L480 AbstractCegarLoop]: Abstraction has 820 states and 948 transitions. [2021-02-21 18:58:02,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:58:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 948 transitions. [2021-02-21 18:58:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:58:02,611 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:02,612 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] [2021-02-21 18:58:02,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:58:02,612 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1241876197, now seen corresponding path program 1 times [2021-02-21 18:58:02,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:02,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864929536] [2021-02-21 18:58:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:02,616 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:02,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:02,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:02,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:02,999 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:58:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:58:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:58:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:58:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:58:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:58:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 18:58:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:58:03,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:58:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:58:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:58:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 18:58:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:58:03,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:58:03,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:58:03,135 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 18:58:03,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864929536] [2021-02-21 18:58:03,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:58:03,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:58:03,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251308543] [2021-02-21 18:58:03,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:58:03,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:58:03,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:58:03,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:58:03,138 INFO L87 Difference]: Start difference. First operand 820 states and 948 transitions. Second operand 6 states. [2021-02-21 18:58:03,731 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:58:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:58:05,004 INFO L93 Difference]: Finished difference Result 1357 states and 1630 transitions. [2021-02-21 18:58:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 18:58:05,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 18:58:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:58:05,009 INFO L225 Difference]: With dead ends: 1357 [2021-02-21 18:58:05,010 INFO L226 Difference]: Without dead ends: 652 [2021-02-21 18:58:05,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:58:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-02-21 18:58:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 575. [2021-02-21 18:58:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2021-02-21 18:58:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 626 transitions. [2021-02-21 18:58:05,230 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 626 transitions. Word has length 182 [2021-02-21 18:58:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:58:05,230 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 626 transitions. [2021-02-21 18:58:05,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:58:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 626 transitions. [2021-02-21 18:58:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 18:58:05,234 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:58:05,234 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] [2021-02-21 18:58:05,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:58:05,235 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:58:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:58:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -562945429, now seen corresponding path program 1 times [2021-02-21 18:58:05,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:58:05,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595154410] [2021-02-21 18:58:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:58:05,238 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:58:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:05,311 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:58:05,394 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:58:05,583 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:58:05,583 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:58:05,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:58:05,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:58:05 BoogieIcfgContainer [2021-02-21 18:58:05,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:58:05,608 INFO L168 Benchmark]: Toolchain (without parser) took 25453.73 ms. Allocated memory was 161.5 MB in the beginning and 602.9 MB in the end (delta: 441.5 MB). Free memory was 136.4 MB in the beginning and 341.4 MB in the end (delta: -205.0 MB). Peak memory consumption was 237.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:05,609 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory was 133.7 MB in the beginning and 133.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:58:05,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.36 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 114.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:05,610 INFO L168 Benchmark]: Boogie Preprocessor took 93.25 ms. Allocated memory is still 161.5 MB. Free memory was 114.4 MB in the beginning and 110.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:05,611 INFO L168 Benchmark]: RCFGBuilder took 1316.96 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 110.4 MB in the beginning and 161.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:05,611 INFO L168 Benchmark]: TraceAbstraction took 23347.86 ms. Allocated memory was 194.0 MB in the beginning and 602.9 MB in the end (delta: 408.9 MB). Free memory was 161.3 MB in the beginning and 341.4 MB in the end (delta: -180.1 MB). Peak memory consumption was 228.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:58:05,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory was 133.7 MB in the beginning and 133.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 671.36 ms. Allocated memory is still 161.5 MB. Free memory was 135.1 MB in the beginning and 114.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.25 ms. Allocated memory is still 161.5 MB. Free memory was 114.4 MB in the beginning and 110.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1316.96 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 110.4 MB in the beginning and 161.8 MB in the end (delta: -51.4 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23347.86 ms. Allocated memory was 194.0 MB in the beginning and 602.9 MB in the end (delta: 408.9 MB). Free memory was 161.3 MB in the beginning and 341.4 MB in the end (delta: -180.1 MB). Peak memory consumption was 228.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L371] int cleanupTimeShifts = 4; [L639] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L447] int retValue_acc ; [L448] int tmp ; [L452] FCALL select_helpers() [L453] FCALL select_features() [L454] CALL, EXPR valid_product() [L951] int retValue_acc ; [L954] retValue_acc = 1 [L955] return (retValue_acc); [L454] RET, EXPR valid_product() [L454] tmp = valid_product() [L456] COND TRUE \read(tmp) [L458] FCALL setup() [L459] CALL runTest() [L438] CALL test() [L268] int splverifierCounter ; [L269] int tmp ; [L270] int tmp___0 ; [L271] int tmp___1 ; [L272] int tmp___2 ; [L275] splverifierCounter = 0 [L277] COND TRUE 1 [L279] COND TRUE splverifierCounter < 4 [L285] tmp = __VERIFIER_nondet_int() [L287] COND TRUE \read(tmp) [L289] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L289] RET waterRise() [L295] tmp___0 = __VERIFIER_nondet_int() [L297] COND FALSE !(\read(tmp___0)) [L305] tmp___2 = __VERIFIER_nondet_int() [L307] COND FALSE !(\read(tmp___2)) [L313] tmp___1 = __VERIFIER_nondet_int() [L315] COND TRUE \read(tmp___1) [L317] CALL stopSystem() [L244] COND FALSE !(\read(pumpRunning)) [L251] systemActive = 0 [L317] RET stopSystem() [L324] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND FALSE !(\read(systemActive)) [L85] CALL __utac_acc__Specification3_spec__1() [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L344] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L344] RET, EXPR isMethaneLevelCritical() [L344] tmp = isMethaneLevelCritical() [L346] COND FALSE !(\read(tmp)) [L350] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L350] RET, EXPR getWaterLevel() [L350] tmp___0 = getWaterLevel() [L352] COND TRUE tmp___0 == 2 [L354] CALL, EXPR isPumpRunning() [L177] int retValue_acc ; [L180] retValue_acc = pumpRunning [L181] return (retValue_acc); [L354] RET, EXPR isPumpRunning() [L354] tmp___1 = isPumpRunning() [L356] COND FALSE !(\read(tmp___1)) [L360] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1241 SDtfs, 1971 SDslu, 1640 SDs, 0 SdLazy, 3509 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred 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: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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...