/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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:57:03,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:57:03,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:57:03,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:57:03,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:57:03,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:57:03,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:57:03,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:57:03,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:57:03,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:57:03,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:57:03,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:57:03,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:57:03,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:57:03,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:57:03,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:57:03,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:57:03,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:57:03,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:57:03,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:57:03,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:57:03,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:57:03,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:57:03,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:57:03,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:57:03,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:57:03,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:57:03,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:57:03,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:57:03,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:57:03,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:57:03,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:57:03,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:57:03,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:57:03,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:57:03,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:57:03,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:57:03,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:57:03,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:57:03,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:57:03,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:57:03,333 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 16:57:03,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:57:03,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:57:03,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:57:03,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:57:03,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:57:03,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:57:03,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:57:03,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:57:03,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:57:03,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:57:03,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:57:03,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:57:03,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:57:03,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:57:03,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:57:03,372 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:57:03,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:57:03,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:57:03,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:57:03,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:57:03,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:57:03,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:57:03,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:57:03,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:57:03,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:57:03,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:57:03,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:57:03,840 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:57:03,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2021-02-23 16:57:03,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd533abb/2c9a0838fa0e4922a6a1906923a3f3a7/FLAGb9558af0b [2021-02-23 16:57:04,655 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:57:04,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2021-02-23 16:57:04,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd533abb/2c9a0838fa0e4922a6a1906923a3f3a7/FLAGb9558af0b [2021-02-23 16:57:04,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd533abb/2c9a0838fa0e4922a6a1906923a3f3a7 [2021-02-23 16:57:04,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:57:05,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:57:05,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:57:05,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:57:05,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:57:05,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:57:04" (1/1) ... [2021-02-23 16:57:05,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ea27cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05, skipping insertion in model container [2021-02-23 16:57:05,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:57:04" (1/1) ... [2021-02-23 16:57:05,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:57:05,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:57:05,468 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_product36.cil.c[6303,6316] [2021-02-23 16:57:05,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:57:05,583 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:57:05,681 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_product36.cil.c[6303,6316] [2021-02-23 16:57:05,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:57:05,853 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:57:05,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05 WrapperNode [2021-02-23 16:57:05,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:57:05,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:57:05,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:57:05,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:57:05,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... [2021-02-23 16:57:05,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:57:05,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:57:05,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:57:05,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:57:05,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:57:06,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:57:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:57:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:57:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:57:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:57:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:57:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:57:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:57:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:57:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:57:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:57:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:57:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:57:06,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:57:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:57:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:57:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:57:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:57:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:57:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:57:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:57:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:57:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:57:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:57:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:57:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:57:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:57:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:57:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:57:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:57:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:57:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:57:07,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:57:07,567 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:57:07,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:57:07 BoogieIcfgContainer [2021-02-23 16:57:07,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:57:07,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:57:07,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:57:07,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:57:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:57:04" (1/3) ... [2021-02-23 16:57:07,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea17a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:57:07, skipping insertion in model container [2021-02-23 16:57:07,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:57:05" (2/3) ... [2021-02-23 16:57:07,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea17a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:57:07, skipping insertion in model container [2021-02-23 16:57:07,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:57:07" (3/3) ... [2021-02-23 16:57:07,588 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2021-02-23 16:57:07,597 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:57:07,604 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:57:07,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:57:07,670 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:57:07,671 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:57:07,671 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:57:07,672 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:57:07,673 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:57:07,673 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:57:07,673 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:57:07,674 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:57:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2021-02-23 16:57:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:57:07,756 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:07,757 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 16:57:07,758 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash 746784282, now seen corresponding path program 1 times [2021-02-23 16:57:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536099669] [2021-02-23 16:57:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:07,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:57:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,643 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:57:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:57:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:57:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:57:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:57:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:57:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:57:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:57:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:08,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:08,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:08,863 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 16:57:08,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536099669] [2021-02-23 16:57:08,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:57:08,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:57:08,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016219530] [2021-02-23 16:57:08,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:57:08,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:57:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:57:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:57:08,899 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2021-02-23 16:57:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:57:10,711 INFO L93 Difference]: Finished difference Result 454 states and 540 transitions. [2021-02-23 16:57:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:57:10,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:57:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:57:10,733 INFO L225 Difference]: With dead ends: 454 [2021-02-23 16:57:10,733 INFO L226 Difference]: Without dead ends: 287 [2021-02-23 16:57:10,739 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 [2021-02-23 16:57:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-23 16:57:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 245. [2021-02-23 16:57:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-23 16:57:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 264 transitions. [2021-02-23 16:57:10,976 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 264 transitions. Word has length 147 [2021-02-23 16:57:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:57:10,978 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 264 transitions. [2021-02-23 16:57:10,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:57:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 264 transitions. [2021-02-23 16:57:10,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:57:10,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:10,983 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 16:57:10,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:57:10,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1460831127, now seen corresponding path program 1 times [2021-02-23 16:57:10,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:10,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123328087] [2021-02-23 16:57:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:10,992 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:57:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:11,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,469 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:57:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:57:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:57:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:57:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:57:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:57:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:57:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:57:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:11,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:11,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:11,590 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 16:57:11,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123328087] [2021-02-23 16:57:11,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:57:11,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:57:11,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192752243] [2021-02-23 16:57:11,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:57:11,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:57:11,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:57:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:57:11,594 INFO L87 Difference]: Start difference. First operand 245 states and 264 transitions. Second operand 4 states. [2021-02-23 16:57:12,480 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:57:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:57:13,549 INFO L93 Difference]: Finished difference Result 357 states and 400 transitions. [2021-02-23 16:57:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:57:13,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:57:13,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:57:13,555 INFO L225 Difference]: With dead ends: 357 [2021-02-23 16:57:13,556 INFO L226 Difference]: Without dead ends: 270 [2021-02-23 16:57:13,558 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 [2021-02-23 16:57:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-23 16:57:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2021-02-23 16:57:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 16:57:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 251 transitions. [2021-02-23 16:57:13,679 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 251 transitions. Word has length 148 [2021-02-23 16:57:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:57:13,682 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 251 transitions. [2021-02-23 16:57:13,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:57:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 251 transitions. [2021-02-23 16:57:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:57:13,687 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:13,688 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 16:57:13,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:57:13,688 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:13,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1301591800, now seen corresponding path program 1 times [2021-02-23 16:57:13,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:13,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816771569] [2021-02-23 16:57:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:13,695 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:57:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:13,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:13,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:13,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:13,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:13,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:13,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:13,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,227 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:57:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:57:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:57:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:57:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:57:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:57:14,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:57:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:57:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:57:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:57:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:57:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:14,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:14,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:14,525 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 16:57:14,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816771569] [2021-02-23 16:57:14,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:57:14,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:57:14,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696738747] [2021-02-23 16:57:14,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:57:14,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:57:14,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:57:14,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:57:14,532 INFO L87 Difference]: Start difference. First operand 235 states and 251 transitions. Second operand 10 states. [2021-02-23 16:57:15,307 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:57:15,801 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:57:16,174 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:57:16,602 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:17,042 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:17,457 WARN L202 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:18,561 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:57:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:57:20,725 INFO L93 Difference]: Finished difference Result 626 states and 727 transitions. [2021-02-23 16:57:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:57:20,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:57:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:57:20,739 INFO L225 Difference]: With dead ends: 626 [2021-02-23 16:57:20,740 INFO L226 Difference]: Without dead ends: 506 [2021-02-23 16:57:20,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:57:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-02-23 16:57:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 403. [2021-02-23 16:57:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-02-23 16:57:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 445 transitions. [2021-02-23 16:57:20,965 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 445 transitions. Word has length 161 [2021-02-23 16:57:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:57:20,966 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 445 transitions. [2021-02-23 16:57:20,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:57:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 445 transitions. [2021-02-23 16:57:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-23 16:57:20,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:20,969 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 16:57:20,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:57:20,970 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash 443628389, now seen corresponding path program 1 times [2021-02-23 16:57:20,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:20,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728009968] [2021-02-23 16:57:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:20,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:57:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:57:21,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,472 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:57:21,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:57:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:57:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:57:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:57:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:57:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:57:21,642 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:57:21,643 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:57:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:57:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:57:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:57:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:57:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:21,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:21,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:21,783 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 16:57:21,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728009968] [2021-02-23 16:57:21,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:57:21,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:57:21,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248541898] [2021-02-23 16:57:21,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:57:21,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:57:21,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:57:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:57:21,786 INFO L87 Difference]: Start difference. First operand 403 states and 445 transitions. Second operand 14 states. [2021-02-23 16:57:22,477 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:57:22,998 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:57:23,420 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:57:23,851 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:24,255 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:24,654 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:25,485 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:57:26,862 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:27,280 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:27,824 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:28,247 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:57:28,624 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:57:29,022 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:57:29,471 WARN L202 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:57:29,881 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:30,306 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:30,859 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:31,401 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:57:31,826 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:57:32,327 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:57:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:57:34,715 INFO L93 Difference]: Finished difference Result 1341 states and 1682 transitions. [2021-02-23 16:57:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:57:34,716 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2021-02-23 16:57:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:57:34,729 INFO L225 Difference]: With dead ends: 1341 [2021-02-23 16:57:34,730 INFO L226 Difference]: Without dead ends: 1053 [2021-02-23 16:57:34,734 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 [2021-02-23 16:57:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-02-23 16:57:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 918. [2021-02-23 16:57:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2021-02-23 16:57:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1070 transitions. [2021-02-23 16:57:35,180 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1070 transitions. Word has length 166 [2021-02-23 16:57:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:57:35,181 INFO L480 AbstractCegarLoop]: Abstraction has 918 states and 1070 transitions. [2021-02-23 16:57:35,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:57:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1070 transitions. [2021-02-23 16:57:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:57:35,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:35,186 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 16:57:35,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:57:35,187 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:35,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1847034458, now seen corresponding path program 1 times [2021-02-23 16:57:35,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:35,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391220191] [2021-02-23 16:57:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:35,192 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:57:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,661 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:57:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:57:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:57:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:57:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:57:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:57:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:57:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:57:35,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:57:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:57:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:57:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:57:35,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:35,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:57:35,867 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 16:57:35,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391220191] [2021-02-23 16:57:35,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:57:35,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:57:35,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213137055] [2021-02-23 16:57:35,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:57:35,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:57:35,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:57:35,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:57:35,870 INFO L87 Difference]: Start difference. First operand 918 states and 1070 transitions. Second operand 6 states. [2021-02-23 16:57:36,563 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:57:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:57:39,252 INFO L93 Difference]: Finished difference Result 2185 states and 2687 transitions. [2021-02-23 16:57:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:57:39,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2021-02-23 16:57:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:57:39,267 INFO L225 Difference]: With dead ends: 2185 [2021-02-23 16:57:39,267 INFO L226 Difference]: Without dead ends: 1382 [2021-02-23 16:57:39,271 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 [2021-02-23 16:57:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-02-23 16:57:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1279. [2021-02-23 16:57:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2021-02-23 16:57:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1497 transitions. [2021-02-23 16:57:40,067 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1497 transitions. Word has length 171 [2021-02-23 16:57:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:57:40,067 INFO L480 AbstractCegarLoop]: Abstraction has 1279 states and 1497 transitions. [2021-02-23 16:57:40,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:57:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1497 transitions. [2021-02-23 16:57:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-23 16:57:40,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:57:40,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:57:40,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:57:40,076 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:57:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:57:40,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1492250991, now seen corresponding path program 1 times [2021-02-23 16:57:40,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:57:40,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853361844] [2021-02-23 16:57:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:57:40,914 WARN L202 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 119 [2021-02-23 16:57:40,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:57:40,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 289