/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:35:45,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:35:45,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:35:45,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:35:45,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:35:46,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:35:46,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:35:46,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:35:46,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:35:46,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:35:46,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:35:46,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:35:46,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:35:46,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:35:46,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:35:46,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:35:46,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:35:46,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:35:46,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:35:46,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:35:46,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:35:46,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:35:46,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:35:46,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:35:46,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:35:46,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:35:46,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:35:46,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:35:46,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:35:46,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:35:46,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:35:46,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:35:46,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:35:46,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:35:46,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:35:46,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:35:46,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:35:46,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:35:46,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:35:46,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:35:46,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:35:46,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:35:46,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:35:46,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:35:46,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:35:46,149 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:35:46,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:35:46,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:35:46,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:35:46,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:35:46,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:35:46,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:35:46,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:35:46,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:35:46,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:35:46,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:35:46,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:35:46,153 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:35:46,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:35:46,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:35:46,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:35:46,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:35:46,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:35:46,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:35:46,154 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:35:46,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:35:46,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:35:46,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:35:46,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:35:46,663 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:35:46,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2021-02-21 19:35:46,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad96477bf/3ea0fc5507d640b1867512374228eb5e/FLAGf8d15bb71 [2021-02-21 19:35:47,550 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:35:47,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2021-02-21 19:35:47,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad96477bf/3ea0fc5507d640b1867512374228eb5e/FLAGf8d15bb71 [2021-02-21 19:35:47,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad96477bf/3ea0fc5507d640b1867512374228eb5e [2021-02-21 19:35:47,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:35:47,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:35:47,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:35:47,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:35:47,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:35:47,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:35:47" (1/1) ... [2021-02-21 19:35:47,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418464a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:47, skipping insertion in model container [2021-02-21 19:35:47,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:35:47" (1/1) ... [2021-02-21 19:35:47,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:35:47,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:35:48,268 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c[16386,16399] [2021-02-21 19:35:48,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:35:48,301 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:35:48,409 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c[16386,16399] [2021-02-21 19:35:48,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:35:48,481 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:35:48,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48 WrapperNode [2021-02-21 19:35:48,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:35:48,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:35:48,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:35:48,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:35:48,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... [2021-02-21 19:35:48,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:35:48,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:35:48,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:35:48,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:35:48,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:35:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:35:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:35:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:35:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:35:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:35:48,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:35:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:35:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:35:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:35:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:35:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:35:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:35:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:35:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:35:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:35:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:35:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:35:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:35:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:35:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:35:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:35:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:35:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:35:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:35:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:35:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:35:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:35:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:35:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:35:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:35:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:35:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:35:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:35:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:35:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:35:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:35:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:35:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:35:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:35:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:35:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:35:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:35:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:35:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:35:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:35:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:35:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:35:50,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:35:50,309 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:35:50,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:35:50 BoogieIcfgContainer [2021-02-21 19:35:50,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:35:50,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:35:50,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:35:50,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:35:50,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:35:47" (1/3) ... [2021-02-21 19:35:50,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3d855d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:35:50, skipping insertion in model container [2021-02-21 19:35:50,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:35:48" (2/3) ... [2021-02-21 19:35:50,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3d855d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:35:50, skipping insertion in model container [2021-02-21 19:35:50,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:35:50" (3/3) ... [2021-02-21 19:35:50,324 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-02-21 19:35:50,331 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:35:50,338 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:35:50,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:35:50,386 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:35:50,386 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:35:50,386 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:35:50,387 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:35:50,387 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:35:50,387 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:35:50,387 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:35:50,387 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:35:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states. [2021-02-21 19:35:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:35:50,437 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:50,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:35:50,439 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1873090485, now seen corresponding path program 1 times [2021-02-21 19:35:50,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:50,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443112082] [2021-02-21 19:35:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:50,538 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:50,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:50,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:50,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:50,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,312 WARN L202 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:35:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:35:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:51,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:51,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:51,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443112082] [2021-02-21 19:35:51,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:51,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:35:51,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620303602] [2021-02-21 19:35:51,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:35:51,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:35:51,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:35:51,589 INFO L87 Difference]: Start difference. First operand 327 states. Second operand 3 states. [2021-02-21 19:35:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:53,796 INFO L93 Difference]: Finished difference Result 517 states and 615 transitions. [2021-02-21 19:35:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:35:53,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:35:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:53,818 INFO L225 Difference]: With dead ends: 517 [2021-02-21 19:35:53,818 INFO L226 Difference]: Without dead ends: 320 [2021-02-21 19:35:53,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:35:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-02-21 19:35:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 275. [2021-02-21 19:35:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2021-02-21 19:35:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 300 transitions. [2021-02-21 19:35:54,016 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 300 transitions. Word has length 147 [2021-02-21 19:35:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:54,017 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 300 transitions. [2021-02-21 19:35:54,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:35:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 300 transitions. [2021-02-21 19:35:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:35:54,022 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:54,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:35:54,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:35:54,023 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:54,024 INFO L82 PathProgramCache]: Analyzing trace with hash -779544622, now seen corresponding path program 1 times [2021-02-21 19:35:54,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:54,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962621508] [2021-02-21 19:35:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:54,030 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:54,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,505 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:35:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:35:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:54,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:54,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:54,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962621508] [2021-02-21 19:35:54,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:54,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:35:54,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990532989] [2021-02-21 19:35:54,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:35:54,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:54,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:35:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:35:54,628 INFO L87 Difference]: Start difference. First operand 275 states and 300 transitions. Second operand 4 states. [2021-02-21 19:35:55,485 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:35:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:35:56,924 INFO L93 Difference]: Finished difference Result 427 states and 481 transitions. [2021-02-21 19:35:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:35:56,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:35:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:35:56,942 INFO L225 Difference]: With dead ends: 427 [2021-02-21 19:35:56,943 INFO L226 Difference]: Without dead ends: 303 [2021-02-21 19:35:56,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:35:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-21 19:35:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 265. [2021-02-21 19:35:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2021-02-21 19:35:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2021-02-21 19:35:57,119 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 148 [2021-02-21 19:35:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:35:57,122 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2021-02-21 19:35:57,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:35:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2021-02-21 19:35:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 19:35:57,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:35:57,128 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] [2021-02-21 19:35:57,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:35:57,134 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:35:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:35:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1634729264, now seen corresponding path program 1 times [2021-02-21 19:35:57,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:35:57,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174420484] [2021-02-21 19:35:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:35:57,149 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:35:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:57,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:57,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:57,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:35:57,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:57,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:57,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:35:57,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,755 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:35:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:35:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:35:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:35:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:35:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:35:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:35:57,876 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:35:57,877 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:35:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:35:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:35:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:35:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:35:57,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:35:57,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:35:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:35:57,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174420484] [2021-02-21 19:35:57,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:35:57,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:35:57,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623254119] [2021-02-21 19:35:57,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:35:57,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:35:57,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:35:57,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:35:57,951 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand 9 states. [2021-02-21 19:35:58,674 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:35:59,134 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:35:59,588 WARN L202 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:36:00,016 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:00,440 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:00,833 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:02,055 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:36:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:36:05,030 INFO L93 Difference]: Finished difference Result 700 states and 806 transitions. [2021-02-21 19:36:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:36:05,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 19:36:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:36:05,037 INFO L225 Difference]: With dead ends: 700 [2021-02-21 19:36:05,038 INFO L226 Difference]: Without dead ends: 550 [2021-02-21 19:36:05,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:36:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-02-21 19:36:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 479. [2021-02-21 19:36:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2021-02-21 19:36:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 537 transitions. [2021-02-21 19:36:05,316 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 537 transitions. Word has length 157 [2021-02-21 19:36:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:36:05,317 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 537 transitions. [2021-02-21 19:36:05,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:36:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 537 transitions. [2021-02-21 19:36:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 19:36:05,320 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:36:05,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:36:05,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:36:05,321 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:36:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:36:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1269645150, now seen corresponding path program 1 times [2021-02-21 19:36:05,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:36:05,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320213940] [2021-02-21 19:36:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:36:05,326 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:36:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:36:05,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,790 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:36:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:36:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:36:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:36:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:36:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:36:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:36:05,894 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:36:05,895 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:36:05,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:36:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:36:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 19:36:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:05,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:05,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:05,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 19:36:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:06,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:06,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:36:06,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320213940] [2021-02-21 19:36:06,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:36:06,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 19:36:06,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656514215] [2021-02-21 19:36:06,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 19:36:06,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:36:06,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 19:36:06,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:36:06,098 INFO L87 Difference]: Start difference. First operand 479 states and 537 transitions. Second operand 14 states. [2021-02-21 19:36:06,832 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:36:07,345 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:36:07,769 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:36:08,169 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:08,583 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:08,981 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:09,922 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:36:11,565 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:12,112 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:12,739 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:13,214 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:36:13,605 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:36:14,008 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:36:14,429 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:36:14,871 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:15,272 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:15,874 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:16,392 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:36:16,851 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:36:17,395 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:36:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:36:20,213 INFO L93 Difference]: Finished difference Result 1665 states and 2084 transitions. [2021-02-21 19:36:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 19:36:20,213 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-21 19:36:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:36:20,228 INFO L225 Difference]: With dead ends: 1665 [2021-02-21 19:36:20,228 INFO L226 Difference]: Without dead ends: 1301 [2021-02-21 19:36:20,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 19:36:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2021-02-21 19:36:20,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1162. [2021-02-21 19:36:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2021-02-21 19:36:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1374 transitions. [2021-02-21 19:36:20,792 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1374 transitions. Word has length 166 [2021-02-21 19:36:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:36:20,793 INFO L480 AbstractCegarLoop]: Abstraction has 1162 states and 1374 transitions. [2021-02-21 19:36:20,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 19:36:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1374 transitions. [2021-02-21 19:36:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 19:36:20,799 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:36:20,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:36:20,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:36:20,799 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:36:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:36:20,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1139355391, now seen corresponding path program 1 times [2021-02-21 19:36:20,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:36:20,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677673069] [2021-02-21 19:36:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:36:20,805 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:36:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:20,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:20,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:20,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,291 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:36:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:36:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:21,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:36:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:36:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:36:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:36:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:36:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:36:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:36:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:36:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 19:36:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:36:21,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:21,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:36:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:36:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677673069] [2021-02-21 19:36:21,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:36:21,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:36:21,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412878561] [2021-02-21 19:36:21,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:36:21,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:36:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:36:21,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:36:21,514 INFO L87 Difference]: Start difference. First operand 1162 states and 1374 transitions. Second operand 6 states. [2021-02-21 19:36:22,282 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:36:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:36:25,487 INFO L93 Difference]: Finished difference Result 2739 states and 3405 transitions. [2021-02-21 19:36:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:36:25,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-21 19:36:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:36:25,501 INFO L225 Difference]: With dead ends: 2739 [2021-02-21 19:36:25,501 INFO L226 Difference]: Without dead ends: 1692 [2021-02-21 19:36:25,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:36:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-02-21 19:36:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1569. [2021-02-21 19:36:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2021-02-21 19:36:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 1831 transitions. [2021-02-21 19:36:26,260 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 1831 transitions. Word has length 171 [2021-02-21 19:36:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:36:26,260 INFO L480 AbstractCegarLoop]: Abstraction has 1569 states and 1831 transitions. [2021-02-21 19:36:26,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:36:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 1831 transitions. [2021-02-21 19:36:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-02-21 19:36:26,265 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:36:26,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:36:26,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:36:26,267 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:36:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:36:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1984287646, now seen corresponding path program 1 times [2021-02-21 19:36:26,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:36:26,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015950677] [2021-02-21 19:36:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:36:26,994 WARN L202 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2021-02-21 19:36:27,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:36:27,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296