/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:43:05,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:43:06,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:43:06,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:43:06,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:43:06,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:43:06,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:43:06,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:43:06,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:43:06,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:43:06,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:43:06,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:43:06,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:43:06,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:43:06,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:43:06,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:43:06,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:43:06,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:43:06,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:43:06,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:43:06,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:43:06,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:43:06,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:43:06,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:43:06,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:43:06,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:43:06,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:43:06,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:43:06,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:43:06,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:43:06,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:43:06,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:43:06,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:43:06,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:43:06,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:43:06,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:43:06,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:43:06,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:43:06,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:43:06,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:43:06,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:43:06,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:43:06,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:43:06,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:43:06,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:43:06,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:43:06,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:43:06,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:43:06,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:43:06,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:43:06,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:43:06,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:43:06,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:43:06,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:43:06,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:43:06,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:43:06,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:43:06,207 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:43:06,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:43:06,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:43:06,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:06,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:43:06,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:43:06,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:43:06,209 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:43:06,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:43:06,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:43:06,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:43:06,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:43:06,661 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:43:06,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2021-02-21 18:43:06,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ebbe1f0/9d4fd70d1ffb4d7eb810ff7120da561a/FLAG65c327ae8 [2021-02-21 18:43:07,510 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:43:07,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2021-02-21 18:43:07,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ebbe1f0/9d4fd70d1ffb4d7eb810ff7120da561a/FLAG65c327ae8 [2021-02-21 18:43:07,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ebbe1f0/9d4fd70d1ffb4d7eb810ff7120da561a [2021-02-21 18:43:07,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:43:07,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:43:07,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:07,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:43:07,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:43:07,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:07" (1/1) ... [2021-02-21 18:43:07,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1404a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:07, skipping insertion in model container [2021-02-21 18:43:07,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:43:07" (1/1) ... [2021-02-21 18:43:07,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:43:07,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:43:08,237 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-02-21 18:43:08,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:08,254 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:43:08,333 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c[18106,18119] [2021-02-21 18:43:08,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:43:08,377 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:43:08,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08 WrapperNode [2021-02-21 18:43:08,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:43:08,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:43:08,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:43:08,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:43:08,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... [2021-02-21 18:43:08,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:43:08,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:43:08,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:43:08,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:43:08,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:43:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:43:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:43:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:43:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:43:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:43:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:43:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:43:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:43:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:43:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:43:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:43:08,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:43:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:43:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:43:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:43:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:43:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:43:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:43:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:43:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:43:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-21 18:43:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:43:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:43:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:43:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:43:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:43:08,703 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:43:08,704 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:43:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:43:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:43:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:43:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:43:08,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:43:09,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:43:09,858 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:43:09,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:09 BoogieIcfgContainer [2021-02-21 18:43:09,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:43:09,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:43:09,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:43:09,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:43:09,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:43:07" (1/3) ... [2021-02-21 18:43:09,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640c4aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:09, skipping insertion in model container [2021-02-21 18:43:09,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:43:08" (2/3) ... [2021-02-21 18:43:09,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640c4aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:43:09, skipping insertion in model container [2021-02-21 18:43:09,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:43:09" (3/3) ... [2021-02-21 18:43:09,871 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2021-02-21 18:43:09,880 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:43:09,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:43:09,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:43:09,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:43:09,938 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:43:09,938 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:43:09,938 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:43:09,938 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:43:09,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:43:09,938 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:43:09,939 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:43:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2021-02-21 18:43:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 18:43:09,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:09,999 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 18:43:09,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:10,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1692639048, now seen corresponding path program 1 times [2021-02-21 18:43:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:10,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045869118] [2021-02-21 18:43:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:10,129 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:10,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:10,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:10,998 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:43:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:11,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:11,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:11,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045869118] [2021-02-21 18:43:11,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:11,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:43:11,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783715828] [2021-02-21 18:43:11,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:43:11,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:43:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:43:11,240 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 3 states. [2021-02-21 18:43:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:12,993 INFO L93 Difference]: Finished difference Result 495 states and 586 transitions. [2021-02-21 18:43:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:43:12,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 18:43:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:13,011 INFO L225 Difference]: With dead ends: 495 [2021-02-21 18:43:13,011 INFO L226 Difference]: Without dead ends: 307 [2021-02-21 18:43:13,017 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 18:43:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-02-21 18:43:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2021-02-21 18:43:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2021-02-21 18:43:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 288 transitions. [2021-02-21 18:43:13,234 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 288 transitions. Word has length 147 [2021-02-21 18:43:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:13,239 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 288 transitions. [2021-02-21 18:43:13,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:43:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 288 transitions. [2021-02-21 18:43:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 18:43:13,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:13,255 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 18:43:13,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:43:13,256 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash 487640680, now seen corresponding path program 1 times [2021-02-21 18:43:13,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:13,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415602320] [2021-02-21 18:43:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:13,266 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:13,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,747 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:43:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:43:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:13,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:13,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:13,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415602320] [2021-02-21 18:43:13,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:13,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:43:13,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184072726] [2021-02-21 18:43:13,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:43:13,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:13,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:43:13,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:43:13,872 INFO L87 Difference]: Start difference. First operand 266 states and 288 transitions. Second operand 4 states. [2021-02-21 18:43:14,582 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:15,690 INFO L93 Difference]: Finished difference Result 411 states and 460 transitions. [2021-02-21 18:43:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:43:15,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 18:43:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:15,696 INFO L225 Difference]: With dead ends: 411 [2021-02-21 18:43:15,696 INFO L226 Difference]: Without dead ends: 290 [2021-02-21 18:43:15,699 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 18:43:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-21 18:43:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2021-02-21 18:43:15,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-21 18:43:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 275 transitions. [2021-02-21 18:43:15,815 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 275 transitions. Word has length 148 [2021-02-21 18:43:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:15,816 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 275 transitions. [2021-02-21 18:43:15,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:43:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 275 transitions. [2021-02-21 18:43:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-21 18:43:15,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:15,819 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 18:43:15,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:43:15,820 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1888366931, now seen corresponding path program 1 times [2021-02-21 18:43:15,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:15,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131129555] [2021-02-21 18:43:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:15,826 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:15,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:15,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:15,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:15,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:15,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:15,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:15,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:15,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:15,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:15,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,312 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:16,477 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:43:16,479 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:43:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:43:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 18:43:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:16,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:16,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:16,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131129555] [2021-02-21 18:43:16,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:16,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:43:16,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213907440] [2021-02-21 18:43:16,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:43:16,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:16,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:43:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:43:16,551 INFO L87 Difference]: Start difference. First operand 256 states and 275 transitions. Second operand 9 states. [2021-02-21 18:43:17,157 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:17,607 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:18,004 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:18,413 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:18,814 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:19,197 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:20,808 INFO L93 Difference]: Finished difference Result 431 states and 485 transitions. [2021-02-21 18:43:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:43:20,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-21 18:43:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:20,820 INFO L225 Difference]: With dead ends: 431 [2021-02-21 18:43:20,821 INFO L226 Difference]: Without dead ends: 290 [2021-02-21 18:43:20,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:43:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-21 18:43:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2021-02-21 18:43:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2021-02-21 18:43:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2021-02-21 18:43:20,964 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 157 [2021-02-21 18:43:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:20,966 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2021-02-21 18:43:20,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:43:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2021-02-21 18:43:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 18:43:20,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:20,969 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, 1, 1, 1, 1] [2021-02-21 18:43:20,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:43:20,970 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1510432270, now seen corresponding path program 1 times [2021-02-21 18:43:20,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:20,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967658695] [2021-02-21 18:43:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:20,976 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,491 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:43:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:21,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:43:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 18:43:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:43:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:21,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:21,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:21,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967658695] [2021-02-21 18:43:21,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:21,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:43:21,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058095929] [2021-02-21 18:43:21,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:43:21,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:21,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:43:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:43:21,691 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 6 states. [2021-02-21 18:43:22,212 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:23,823 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:24,568 INFO L93 Difference]: Finished difference Result 562 states and 640 transitions. [2021-02-21 18:43:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:43:24,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 18:43:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:24,573 INFO L225 Difference]: With dead ends: 562 [2021-02-21 18:43:24,573 INFO L226 Difference]: Without dead ends: 421 [2021-02-21 18:43:24,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:43:24,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-02-21 18:43:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 362. [2021-02-21 18:43:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2021-02-21 18:43:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 389 transitions. [2021-02-21 18:43:24,757 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 389 transitions. Word has length 170 [2021-02-21 18:43:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:24,758 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 389 transitions. [2021-02-21 18:43:24,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:43:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 389 transitions. [2021-02-21 18:43:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-21 18:43:24,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:24,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:24,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:43:24,762 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1060519215, now seen corresponding path program 1 times [2021-02-21 18:43:24,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:24,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479747522] [2021-02-21 18:43:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:24,766 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:24,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:24,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:24,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:24,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:24,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:24,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:24,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,134 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:43:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:43:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:25,264 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 18:43:25,265 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 18:43:25,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:25,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:43:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:43:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:25,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:25,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:25,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479747522] [2021-02-21 18:43:25,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:25,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:43:25,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347498508] [2021-02-21 18:43:25,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:43:25,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:25,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:43:25,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:43:25,403 INFO L87 Difference]: Start difference. First operand 362 states and 389 transitions. Second operand 9 states. [2021-02-21 18:43:25,975 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:27,129 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:27,508 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:27,889 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:28,261 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:28,671 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 18:43:29,057 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:30,772 INFO L93 Difference]: Finished difference Result 862 states and 1004 transitions. [2021-02-21 18:43:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 18:43:30,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-21 18:43:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:30,781 INFO L225 Difference]: With dead ends: 862 [2021-02-21 18:43:30,781 INFO L226 Difference]: Without dead ends: 615 [2021-02-21 18:43:30,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:43:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-02-21 18:43:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 538. [2021-02-21 18:43:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2021-02-21 18:43:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 592 transitions. [2021-02-21 18:43:31,012 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 592 transitions. Word has length 194 [2021-02-21 18:43:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:31,013 INFO L480 AbstractCegarLoop]: Abstraction has 538 states and 592 transitions. [2021-02-21 18:43:31,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:43:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 592 transitions. [2021-02-21 18:43:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-02-21 18:43:31,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:31,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:31,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:43:31,017 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:31,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:31,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1103325390, now seen corresponding path program 1 times [2021-02-21 18:43:31,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:31,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493732591] [2021-02-21 18:43:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:31,021 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,408 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:43:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-02-21 18:43:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-02-21 18:43:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:31,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:31,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:31,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493732591] [2021-02-21 18:43:31,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:31,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:43:31,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194864379] [2021-02-21 18:43:31,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:43:31,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:31,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:43:31,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:43:31,627 INFO L87 Difference]: Start difference. First operand 538 states and 592 transitions. Second operand 9 states. [2021-02-21 18:43:32,205 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:33,890 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:34,301 WARN L202 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:34,738 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:35,150 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:35,500 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:35,857 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:36,225 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:36,726 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:38,250 INFO L93 Difference]: Finished difference Result 1438 states and 1679 transitions. [2021-02-21 18:43:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:43:38,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2021-02-21 18:43:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:38,258 INFO L225 Difference]: With dead ends: 1438 [2021-02-21 18:43:38,258 INFO L226 Difference]: Without dead ends: 1015 [2021-02-21 18:43:38,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:43:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-02-21 18:43:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 900. [2021-02-21 18:43:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2021-02-21 18:43:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 999 transitions. [2021-02-21 18:43:38,619 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 999 transitions. Word has length 194 [2021-02-21 18:43:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:38,619 INFO L480 AbstractCegarLoop]: Abstraction has 900 states and 999 transitions. [2021-02-21 18:43:38,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:43:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 999 transitions. [2021-02-21 18:43:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-02-21 18:43:38,623 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:38,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:38,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:43:38,624 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1150639167, now seen corresponding path program 1 times [2021-02-21 18:43:38,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:38,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234333750] [2021-02-21 18:43:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:38,628 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:38,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:38,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:38,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,009 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-02-21 18:43:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-21 18:43:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:39,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:39,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:39,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:39,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234333750] [2021-02-21 18:43:39,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:39,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:43:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869262170] [2021-02-21 18:43:39,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:43:39,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:43:39,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:43:39,250 INFO L87 Difference]: Start difference. First operand 900 states and 999 transitions. Second operand 10 states. [2021-02-21 18:43:39,866 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:41,629 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:41,979 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:43:42,378 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:42,774 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:43,209 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:43,643 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:43:44,029 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:44,441 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:45,652 INFO L93 Difference]: Finished difference Result 1123 states and 1315 transitions. [2021-02-21 18:43:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 18:43:45,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2021-02-21 18:43:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:45,663 INFO L225 Difference]: With dead ends: 1123 [2021-02-21 18:43:45,663 INFO L226 Difference]: Without dead ends: 1120 [2021-02-21 18:43:45,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-21 18:43:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-02-21 18:43:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 900. [2021-02-21 18:43:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2021-02-21 18:43:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 997 transitions. [2021-02-21 18:43:46,104 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 997 transitions. Word has length 199 [2021-02-21 18:43:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:46,105 INFO L480 AbstractCegarLoop]: Abstraction has 900 states and 997 transitions. [2021-02-21 18:43:46,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:43:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 997 transitions. [2021-02-21 18:43:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:43:46,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:46,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:46,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 18:43:46,112 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1488353158, now seen corresponding path program 1 times [2021-02-21 18:43:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686652845] [2021-02-21 18:43:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:46,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,550 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:46,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:46,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:46,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:46,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:43:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:43:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:46,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:46,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:46,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686652845] [2021-02-21 18:43:46,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:46,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:43:46,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480600366] [2021-02-21 18:43:46,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:43:46,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:46,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:43:46,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:43:46,786 INFO L87 Difference]: Start difference. First operand 900 states and 997 transitions. Second operand 10 states. [2021-02-21 18:43:48,258 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:48,675 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:49,109 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 18:43:49,519 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:49,947 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:50,332 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:52,025 INFO L93 Difference]: Finished difference Result 1927 states and 2243 transitions. [2021-02-21 18:43:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:43:52,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2021-02-21 18:43:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:52,033 INFO L225 Difference]: With dead ends: 1927 [2021-02-21 18:43:52,033 INFO L226 Difference]: Without dead ends: 1142 [2021-02-21 18:43:52,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-02-21 18:43:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2021-02-21 18:43:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 932. [2021-02-21 18:43:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-21 18:43:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1029 transitions. [2021-02-21 18:43:52,457 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1029 transitions. Word has length 200 [2021-02-21 18:43:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:43:52,457 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1029 transitions. [2021-02-21 18:43:52,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:43:52,457 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1029 transitions. [2021-02-21 18:43:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 18:43:52,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:43:52,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:43:52,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 18:43:52,462 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:43:52,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:43:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash 514482982, now seen corresponding path program 1 times [2021-02-21 18:43:52,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:43:52,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758577093] [2021-02-21 18:43:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:43:52,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:43:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:52,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:52,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,863 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:43:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:43:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:43:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:43:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:43:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:52,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:43:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:43:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 18:43:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:43:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:43:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:52,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:52,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:52,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:53,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:53,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 18:43:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:53,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:43:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 18:43:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 18:43:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-02-21 18:43:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:43:53,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:43:53,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:43:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:43:53,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758577093] [2021-02-21 18:43:53,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:43:53,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 18:43:53,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901942977] [2021-02-21 18:43:53,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 18:43:53,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:43:53,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 18:43:53,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-21 18:43:53,119 INFO L87 Difference]: Start difference. First operand 932 states and 1029 transitions. Second operand 13 states. [2021-02-21 18:43:53,967 WARN L202 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:43:54,394 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:43:54,785 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:55,182 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:55,562 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:56,521 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:56,909 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:57,306 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:57,725 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:43:58,107 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:43:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:43:59,775 INFO L93 Difference]: Finished difference Result 1739 states and 2005 transitions. [2021-02-21 18:43:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 18:43:59,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2021-02-21 18:43:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:43:59,781 INFO L225 Difference]: With dead ends: 1739 [2021-02-21 18:43:59,782 INFO L226 Difference]: Without dead ends: 922 [2021-02-21 18:43:59,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2021-02-21 18:43:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-02-21 18:44:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 778. [2021-02-21 18:44:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2021-02-21 18:44:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 837 transitions. [2021-02-21 18:44:00,122 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 837 transitions. Word has length 200 [2021-02-21 18:44:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:44:00,123 INFO L480 AbstractCegarLoop]: Abstraction has 778 states and 837 transitions. [2021-02-21 18:44:00,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 18:44:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 837 transitions. [2021-02-21 18:44:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 18:44:00,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:44:00,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:44:00,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 18:44:00,127 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:44:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:44:00,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1837543636, now seen corresponding path program 1 times [2021-02-21 18:44:00,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:44:00,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247288224] [2021-02-21 18:44:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:44:00,131 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:44:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:00,201 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:44:00,268 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:44:00,484 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:44:00,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:44:00,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 18:44:00,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:44:00 BoogieIcfgContainer [2021-02-21 18:44:00,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:44:00,512 INFO L168 Benchmark]: Toolchain (without parser) took 52760.38 ms. Allocated memory was 151.0 MB in the beginning and 729.8 MB in the end (delta: 578.8 MB). Free memory was 125.6 MB in the beginning and 400.4 MB in the end (delta: -274.8 MB). Peak memory consumption was 304.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:00,513 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:44:00,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.85 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 103.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:00,513 INFO L168 Benchmark]: Boogie Preprocessor took 207.29 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:00,513 INFO L168 Benchmark]: RCFGBuilder took 1274.47 ms. Allocated memory is still 151.0 MB. Free memory was 130.7 MB in the beginning and 87.3 MB in the end (delta: 43.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:00,513 INFO L168 Benchmark]: TraceAbstraction took 50648.48 ms. Allocated memory was 151.0 MB in the beginning and 729.8 MB in the end (delta: 578.8 MB). Free memory was 86.7 MB in the beginning and 400.4 MB in the end (delta: -313.7 MB). Peak memory consumption was 264.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:44:00,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 606.85 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 103.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 207.29 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 131.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1274.47 ms. Allocated memory is still 151.0 MB. Free memory was 130.7 MB in the beginning and 87.3 MB in the end (delta: 43.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50648.48 ms. Allocated memory was 151.0 MB in the beginning and 729.8 MB in the end (delta: 578.8 MB). Free memory was 86.7 MB in the beginning and 400.4 MB in the end (delta: -313.7 MB). Peak memory consumption was 264.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 952]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; [L152] int retValue_acc ; [L153] int tmp ; [L157] FCALL select_helpers() [L158] FCALL select_features() [L159] CALL, EXPR valid_product() [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); [L159] RET, EXPR valid_product() [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) [L163] FCALL setup() [L164] CALL runTest() [L143] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) [L776] CALL changeMethaneLevel() [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 [L776] RET changeMethaneLevel() [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) [L797] CALL timeShift() [L554] COND FALSE !(\read(pumpRunning)) [L561] COND TRUE \read(systemActive) [L563] CALL processEnvironment() [L609] int tmp ; [L612] COND FALSE !(\read(pumpRunning)) [L627] CALL processEnvironment__wrappee__highWaterSensor() [L583] int tmp ; [L586] COND TRUE ! pumpRunning [L588] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L925] int retValue_acc ; [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L588] RET, EXPR isHighWaterLevel() [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L592] CALL activatePump() [L637] pumpRunning = 1 [L592] RET activatePump() [L627] RET processEnvironment__wrappee__highWaterSensor() [L563] RET processEnvironment() [L569] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L952] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 646 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 41.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2205 SDtfs, 4159 SDslu, 4382 SDs, 0 SdLazy, 8254 SolverSat, 1198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=932occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 934 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...