/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_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:10:16,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:10:16,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:10:16,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:10:16,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:10:16,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:10:16,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:10:16,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:10:16,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:10:16,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:10:16,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:10:16,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:10:16,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:10:16,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:10:16,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:10:16,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:10:16,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:10:16,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:10:16,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:10:16,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:10:16,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:10:16,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:10:16,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:10:16,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:10:16,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:10:16,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:10:16,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:10:16,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:10:16,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:10:16,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:10:16,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:10:16,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:10:16,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:10:16,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:10:16,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:10:16,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:10:16,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:10:16,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:10:16,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:10:16,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:10:16,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:10:16,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:10:16,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:10:16,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:10:16,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:10:16,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:10:16,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:10:16,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:10:16,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:10:16,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:10:16,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:10:16,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:10:16,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:10:16,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:10:16,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:10:16,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:10:16,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:10:16,310 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:10:16,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:10:16,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:10:16,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:10:16,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:10:16,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:10:16,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:10:16,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:10:16,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:10:16,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:10:16,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:10:16,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:10:16,707 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:10:16,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2021-02-23 16:10:16,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5e4b30/0ef2f41a317a4010b191990820083dee/FLAG0444a6a64 [2021-02-23 16:10:17,466 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:10:17,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2021-02-23 16:10:17,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5e4b30/0ef2f41a317a4010b191990820083dee/FLAG0444a6a64 [2021-02-23 16:10:17,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62f5e4b30/0ef2f41a317a4010b191990820083dee [2021-02-23 16:10:17,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:10:17,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:10:17,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:17,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:10:17,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:10:17,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:17" (1/1) ... [2021-02-23 16:10:17,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b94f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:17, skipping insertion in model container [2021-02-23 16:10:17,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:10:17" (1/1) ... [2021-02-23 16:10:17,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:10:17,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:10:18,115 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_spec1_product52.cil.c[5838,5851] [2021-02-23 16:10:18,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:18,274 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:10:18,326 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_spec1_product52.cil.c[5838,5851] [2021-02-23 16:10:18,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:10:18,419 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:10:18,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18 WrapperNode [2021-02-23 16:10:18,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:10:18,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:10:18,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:10:18,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:10:18,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (1/1) ... [2021-02-23 16:10:18,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:10:18,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:10:18,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:10:18,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:10:18,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (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 [2021-02-23 16:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:10:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:10:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:10:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:10:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:10:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:10:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:10:18,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:10:18,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:10:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:10:18,764 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:10:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:10:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:10:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:10:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:10:18,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:10:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:10:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:10:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:10:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:10:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:10:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:10:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:10:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:10:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:10:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:10:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:10:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:10:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:10:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:10:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:10:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:10:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:10:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:10:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:10:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:10:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:10:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:10:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:10:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:10:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:10:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:10:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-23 16:10:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:10:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:10:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:10:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:10:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:10:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:10:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:10:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:10:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:10:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:10:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:10:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:10:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:10:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:10:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:10:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:10:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:10:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:10:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:10:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:10:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:10:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:10:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:10:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:10:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:10:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:10:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:10:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:10:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:10:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:10:18,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:10:20,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:10:20,648 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:10:20,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:20 BoogieIcfgContainer [2021-02-23 16:10:20,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:10:20,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:10:20,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:10:20,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:10:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:10:17" (1/3) ... [2021-02-23 16:10:20,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691f2639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:20, skipping insertion in model container [2021-02-23 16:10:20,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:10:18" (2/3) ... [2021-02-23 16:10:20,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691f2639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:10:20, skipping insertion in model container [2021-02-23 16:10:20,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:10:20" (3/3) ... [2021-02-23 16:10:20,664 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2021-02-23 16:10:20,671 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:10:20,678 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:10:20,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:10:20,724 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:10:20,725 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:10:20,725 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:10:20,725 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:10:20,725 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:10:20,725 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:10:20,726 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:10:20,726 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:10:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states. [2021-02-23 16:10:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:10:20,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:20,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:20,779 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash -455894786, now seen corresponding path program 1 times [2021-02-23 16:10:20,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:20,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462623353] [2021-02-23 16:10:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:20,880 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,776 WARN L202 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:10:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:21,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:21,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:21,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462623353] [2021-02-23 16:10:21,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:21,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:10:21,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917183182] [2021-02-23 16:10:21,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:10:21,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:10:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:21,999 INFO L87 Difference]: Start difference. First operand 334 states. Second operand 3 states. [2021-02-23 16:10:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:24,121 INFO L93 Difference]: Finished difference Result 518 states and 615 transitions. [2021-02-23 16:10:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:10:24,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:10:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:24,142 INFO L225 Difference]: With dead ends: 518 [2021-02-23 16:10:24,142 INFO L226 Difference]: Without dead ends: 320 [2021-02-23 16:10:24,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:10:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-23 16:10:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 276. [2021-02-23 16:10:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2021-02-23 16:10:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 300 transitions. [2021-02-23 16:10:24,333 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 300 transitions. Word has length 147 [2021-02-23 16:10:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:24,334 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 300 transitions. [2021-02-23 16:10:24,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:10:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 300 transitions. [2021-02-23 16:10:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:10:24,342 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:24,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:24,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:10:24,343 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 800101440, now seen corresponding path program 1 times [2021-02-23 16:10:24,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:24,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157554646] [2021-02-23 16:10:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:24,348 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:24,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,862 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:10:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:10:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:24,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:24,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:24,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157554646] [2021-02-23 16:10:24,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:24,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:10:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556794134] [2021-02-23 16:10:24,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:10:24,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:10:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:10:24,973 INFO L87 Difference]: Start difference. First operand 276 states and 300 transitions. Second operand 4 states. [2021-02-23 16:10:25,811 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:27,125 INFO L93 Difference]: Finished difference Result 424 states and 477 transitions. [2021-02-23 16:10:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:10:27,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:10:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:27,138 INFO L225 Difference]: With dead ends: 424 [2021-02-23 16:10:27,139 INFO L226 Difference]: Without dead ends: 303 [2021-02-23 16:10:27,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:10:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-23 16:10:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 266. [2021-02-23 16:10:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-23 16:10:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 287 transitions. [2021-02-23 16:10:27,251 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 287 transitions. Word has length 148 [2021-02-23 16:10:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:27,252 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 287 transitions. [2021-02-23 16:10:27,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:10:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 287 transitions. [2021-02-23 16:10:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:10:27,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:27,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:27,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:10:27,258 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash -523924446, now seen corresponding path program 1 times [2021-02-23 16:10:27,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:27,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967400084] [2021-02-23 16:10:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:27,269 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:27,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:27,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:10:27,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,813 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:27,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:10:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:27,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:10:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:10:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:27,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:27,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:27,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967400084] [2021-02-23 16:10:27,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:27,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:27,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010465563] [2021-02-23 16:10:27,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:27,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:27,986 INFO L87 Difference]: Start difference. First operand 266 states and 287 transitions. Second operand 10 states. [2021-02-23 16:10:28,724 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:29,145 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:29,556 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:10:29,916 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:30,335 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:30,722 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:31,798 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:34,811 INFO L93 Difference]: Finished difference Result 723 states and 841 transitions. [2021-02-23 16:10:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:34,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:10:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:34,818 INFO L225 Difference]: With dead ends: 723 [2021-02-23 16:10:34,818 INFO L226 Difference]: Without dead ends: 572 [2021-02-23 16:10:34,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:10:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-02-23 16:10:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 477. [2021-02-23 16:10:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2021-02-23 16:10:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 533 transitions. [2021-02-23 16:10:35,033 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 533 transitions. Word has length 161 [2021-02-23 16:10:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:35,034 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 533 transitions. [2021-02-23 16:10:35,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 533 transitions. [2021-02-23 16:10:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:10:35,038 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:35,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:35,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:10:35,039 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1808882381, now seen corresponding path program 1 times [2021-02-23 16:10:35,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:35,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555988536] [2021-02-23 16:10:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:35,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,451 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:10:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:10:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:10:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:35,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:35,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:35,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555988536] [2021-02-23 16:10:35,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:35,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:10:35,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350118019] [2021-02-23 16:10:35,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:10:35,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:35,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:10:35,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:10:35,622 INFO L87 Difference]: Start difference. First operand 477 states and 533 transitions. Second operand 9 states. [2021-02-23 16:10:36,273 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:37,847 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:38,253 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:38,751 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:39,189 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:39,595 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:39,991 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:40,417 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:41,107 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:42,601 INFO L93 Difference]: Finished difference Result 1319 states and 1577 transitions. [2021-02-23 16:10:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:10:42,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-23 16:10:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:42,610 INFO L225 Difference]: With dead ends: 1319 [2021-02-23 16:10:42,610 INFO L226 Difference]: Without dead ends: 957 [2021-02-23 16:10:42,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:10:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-02-23 16:10:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 800. [2021-02-23 16:10:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2021-02-23 16:10:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 907 transitions. [2021-02-23 16:10:42,996 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 907 transitions. Word has length 166 [2021-02-23 16:10:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:42,997 INFO L480 AbstractCegarLoop]: Abstraction has 800 states and 907 transitions. [2021-02-23 16:10:42,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:10:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 907 transitions. [2021-02-23 16:10:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:10:43,002 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:43,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:43,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:10:43,002 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1246435019, now seen corresponding path program 1 times [2021-02-23 16:10:43,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:43,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31724551] [2021-02-23 16:10:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:43,007 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,426 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-23 16:10:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:10:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:10:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:43,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:43,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:43,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:43,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31724551] [2021-02-23 16:10:43,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:43,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:10:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851136019] [2021-02-23 16:10:43,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:10:43,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:10:43,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:10:43,627 INFO L87 Difference]: Start difference. First operand 800 states and 907 transitions. Second operand 10 states. [2021-02-23 16:10:44,233 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:45,798 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:46,227 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:46,588 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:47,025 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:10:47,408 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:48,253 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:10:48,650 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:49,144 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:50,527 INFO L93 Difference]: Finished difference Result 2063 states and 2538 transitions. [2021-02-23 16:10:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 16:10:50,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-23 16:10:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:50,538 INFO L225 Difference]: With dead ends: 2063 [2021-02-23 16:10:50,538 INFO L226 Difference]: Without dead ends: 1378 [2021-02-23 16:10:50,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-23 16:10:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-02-23 16:10:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1110. [2021-02-23 16:10:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2021-02-23 16:10:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1278 transitions. [2021-02-23 16:10:51,049 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1278 transitions. Word has length 171 [2021-02-23 16:10:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:51,050 INFO L480 AbstractCegarLoop]: Abstraction has 1110 states and 1278 transitions. [2021-02-23 16:10:51,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:10:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1278 transitions. [2021-02-23 16:10:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:10:51,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:51,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:51,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:10:51,056 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1404694206, now seen corresponding path program 1 times [2021-02-23 16:10:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:51,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011326645] [2021-02-23 16:10:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:51,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,413 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:51,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:10:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:10:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:51,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:51,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:51,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:51,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:51,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:10:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:51,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:51,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:51,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011326645] [2021-02-23 16:10:51,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:51,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 16:10:51,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680493637] [2021-02-23 16:10:51,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 16:10:51,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:51,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 16:10:51,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:10:51,670 INFO L87 Difference]: Start difference. First operand 1110 states and 1278 transitions. Second operand 11 states. [2021-02-23 16:10:53,313 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:10:53,749 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:10:54,165 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-23 16:10:54,566 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:55,013 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:10:55,426 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:10:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:10:57,751 INFO L93 Difference]: Finished difference Result 2722 states and 3408 transitions. [2021-02-23 16:10:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 16:10:57,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2021-02-23 16:10:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:10:57,766 INFO L225 Difference]: With dead ends: 2722 [2021-02-23 16:10:57,767 INFO L226 Difference]: Without dead ends: 1727 [2021-02-23 16:10:57,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-23 16:10:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-02-23 16:10:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1148. [2021-02-23 16:10:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1148 states. [2021-02-23 16:10:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1318 transitions. [2021-02-23 16:10:58,406 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1318 transitions. Word has length 204 [2021-02-23 16:10:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:10:58,407 INFO L480 AbstractCegarLoop]: Abstraction has 1148 states and 1318 transitions. [2021-02-23 16:10:58,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 16:10:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1318 transitions. [2021-02-23 16:10:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:10:58,411 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:10:58,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:10:58,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:10:58,412 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:10:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:10:58,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1916402914, now seen corresponding path program 1 times [2021-02-23 16:10:58,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:10:58,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136250664] [2021-02-23 16:10:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:10:58,416 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:10:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:58,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:58,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,838 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:10:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:10:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:10:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:10:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:10:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:58,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:10:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:10:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:10:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:10:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:10:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:10:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:58,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:58,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:58,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:59,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:59,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:10:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:59,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:10:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:10:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:10:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:10:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:10:59,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:10:59,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:10:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:10:59,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136250664] [2021-02-23 16:10:59,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:10:59,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:10:59,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434505344] [2021-02-23 16:10:59,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:10:59,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:10:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:10:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:10:59,150 INFO L87 Difference]: Start difference. First operand 1148 states and 1318 transitions. Second operand 14 states. [2021-02-23 16:10:59,888 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:11:00,266 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:11:00,635 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:01,016 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:01,378 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:02,589 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:03,000 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:03,435 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:03,857 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:11:04,249 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:11:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:07,046 INFO L93 Difference]: Finished difference Result 2804 states and 3559 transitions. [2021-02-23 16:11:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 16:11:07,046 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2021-02-23 16:11:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:07,058 INFO L225 Difference]: With dead ends: 2804 [2021-02-23 16:11:07,058 INFO L226 Difference]: Without dead ends: 1771 [2021-02-23 16:11:07,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-23 16:11:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-02-23 16:11:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1172. [2021-02-23 16:11:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2021-02-23 16:11:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1342 transitions. [2021-02-23 16:11:07,523 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1342 transitions. Word has length 204 [2021-02-23 16:11:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:07,523 INFO L480 AbstractCegarLoop]: Abstraction has 1172 states and 1342 transitions. [2021-02-23 16:11:07,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:11:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1342 transitions. [2021-02-23 16:11:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-02-23 16:11:07,528 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:07,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:07,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 16:11:07,529 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash 276108933, now seen corresponding path program 1 times [2021-02-23 16:11:07,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:07,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753919580] [2021-02-23 16:11:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:07,532 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:07,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:07,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,933 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:11:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:11:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:11:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:11:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:11:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:11:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:11:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:07,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:11:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:07,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-23 16:11:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:11:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:11:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:08,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:11:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 16:11:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:11:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-23 16:11:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-23 16:11:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-02-23 16:11:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:11:08,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:11:08,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:11:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:11:08,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753919580] [2021-02-23 16:11:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:11:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:11:08,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228253316] [2021-02-23 16:11:08,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:11:08,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:11:08,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:11:08,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:11:08,152 INFO L87 Difference]: Start difference. First operand 1172 states and 1342 transitions. Second operand 8 states. [2021-02-23 16:11:08,836 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:09,625 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:11:15,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:11:15,316 INFO L93 Difference]: Finished difference Result 4334 states and 5552 transitions. [2021-02-23 16:11:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 16:11:15,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2021-02-23 16:11:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:11:15,340 INFO L225 Difference]: With dead ends: 4334 [2021-02-23 16:11:15,340 INFO L226 Difference]: Without dead ends: 3277 [2021-02-23 16:11:15,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2021-02-23 16:11:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-02-23 16:11:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2352. [2021-02-23 16:11:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2021-02-23 16:11:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 2722 transitions. [2021-02-23 16:11:16,723 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 2722 transitions. Word has length 204 [2021-02-23 16:11:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:11:16,724 INFO L480 AbstractCegarLoop]: Abstraction has 2352 states and 2722 transitions. [2021-02-23 16:11:16,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:11:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 2722 transitions. [2021-02-23 16:11:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-23 16:11:16,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:11:16,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:11:16,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 16:11:16,731 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:11:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:11:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1887654999, now seen corresponding path program 1 times [2021-02-23 16:11:16,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:11:16,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243604997] [2021-02-23 16:11:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:11:16,735 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:11:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:16,806 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:11:16,939 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:11:17,216 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:11:17,216 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:11:17,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 16:11:17,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:11:17 BoogieIcfgContainer [2021-02-23 16:11:17,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:11:17,270 INFO L168 Benchmark]: Toolchain (without parser) took 59474.12 ms. Allocated memory was 151.0 MB in the beginning and 952.1 MB in the end (delta: 801.1 MB). Free memory was 126.5 MB in the beginning and 863.0 MB in the end (delta: -736.5 MB). Peak memory consumption was 578.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:17,270 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:11:17,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 609.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 103.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:17,271 INFO L168 Benchmark]: Boogie Preprocessor took 181.23 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:17,278 INFO L168 Benchmark]: RCFGBuilder took 2045.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 85.7 MB in the end (delta: 46.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:17,278 INFO L168 Benchmark]: TraceAbstraction took 56611.36 ms. Allocated memory was 151.0 MB in the beginning and 952.1 MB in the end (delta: 801.1 MB). Free memory was 85.2 MB in the beginning and 863.0 MB in the end (delta: -777.9 MB). Peak memory consumption was 537.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:11:17,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 609.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 103.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 181.23 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2045.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 85.7 MB in the end (delta: 46.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56611.36 ms. Allocated memory was 151.0 MB in the beginning and 952.1 MB in the end (delta: 801.1 MB). Free memory was 85.2 MB in the beginning and 863.0 MB in the end (delta: -777.9 MB). Peak memory consumption was 537.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 385]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L536] int retValue_acc ; [L537] int tmp ; [L541] FCALL select_helpers() [L542] FCALL select_features() [L543] CALL, EXPR valid_product() [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); [L543] RET, EXPR valid_product() [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) [L547] FCALL setup() [L548] CALL runTest() [L527] CALL test() [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 [L401] COND TRUE 1 [L403] COND TRUE splverifierCounter < 4 [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) [L413] CALL waterRise() [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 [L413] RET waterRise() [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) [L423] CALL changeMethaneLevel() [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 [L423] RET changeMethaneLevel() [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L433] CALL startSystem() [L376] systemActive = 1 [L433] RET startSystem() [L448] CALL timeShift() [L168] COND FALSE !(\read(pumpRunning)) [L175] COND TRUE \read(systemActive) [L177] CALL processEnvironment() [L223] int tmp ; [L226] COND FALSE !(\read(pumpRunning)) [L241] CALL processEnvironment__wrappee__highWaterSensor() [L197] int tmp ; [L200] COND TRUE ! pumpRunning [L202] CALL, EXPR isHighWaterLevel() [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L326] CALL, EXPR isHighWaterSensorDry() [L130] int retValue_acc ; [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); [L326] RET, EXPR isHighWaterSensorDry() [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); [L202] RET, EXPR isHighWaterLevel() [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L206] CALL activatePump() [L251] pumpRunning = 1 [L206] RET activatePump() [L241] RET processEnvironment__wrappee__highWaterSensor() [L177] RET processEnvironment() [L183] CALL __utac_acc__Specification1_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L565] CALL, EXPR isMethaneLevelCritical() [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); [L565] RET, EXPR isMethaneLevelCritical() [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L569] CALL, EXPR isPumpRunning() [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); [L569] RET, EXPR isPumpRunning() [L569] tmp___0 = isPumpRunning() [L571] COND TRUE \read(tmp___0) [L573] CALL __automaton_fail() [L385] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 656 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 56.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 46.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2139 SDtfs, 4841 SDslu, 4449 SDs, 0 SdLazy, 9447 SolverSat, 1589 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2352occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 2704 StatesRemovedByMinimization, 8 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...