/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:31:47,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:31:47,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:31:47,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:31:47,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:31:47,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:31:47,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:31:47,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:31:47,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:31:47,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:31:47,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:31:47,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:31:47,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:31:47,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:31:47,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:31:47,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:31:47,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:31:47,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:31:47,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:31:47,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:31:47,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:31:47,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:31:47,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:31:47,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:31:47,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:31:47,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:31:47,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:31:47,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:31:47,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:31:47,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:31:47,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:31:47,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:31:47,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:31:47,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:31:47,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:31:47,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:31:47,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:31:47,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:31:47,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:31:47,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:31:47,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:31:47,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:31:47,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:31:47,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:31:47,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:31:47,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:31:47,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:31:47,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:31:47,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:31:47,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:31:47,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:31:47,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:31:47,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:31:47,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:31:47,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:31:47,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:31:47,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:31:47,372 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:31:47,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:31:47,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:31:47,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:31:47,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:31:47,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:31:47,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:31:47,373 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:31:47,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:31:47,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:31:47,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:31:47,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:31:47,823 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:31:47,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2021-02-21 19:31:47,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3827f535b/eba7ac46477e4a268fb362840d660459/FLAGf9e4096fc [2021-02-21 19:31:48,788 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:31:48,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2021-02-21 19:31:48,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3827f535b/eba7ac46477e4a268fb362840d660459/FLAGf9e4096fc [2021-02-21 19:31:49,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3827f535b/eba7ac46477e4a268fb362840d660459 [2021-02-21 19:31:49,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:31:49,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:31:49,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:31:49,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:31:49,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:31:49,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304ee403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49, skipping insertion in model container [2021-02-21 19:31:49,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:31:49,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:31:49,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c[17619,17632] [2021-02-21 19:31:49,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:31:49,585 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:31:49,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c[17619,17632] [2021-02-21 19:31:49,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:31:49,774 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:31:49,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49 WrapperNode [2021-02-21 19:31:49,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:31:49,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:31:49,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:31:49,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:31:49,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... [2021-02-21 19:31:49,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:31:49,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:31:49,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:31:49,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:31:49,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:31:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:31:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:31:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:31:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:31:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:31:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:31:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:31:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:31:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:31:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:31:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:31:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:31:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:31:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:31:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:31:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:31:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:31:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:31:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:31:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:31:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:31:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:31:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:31:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:31:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:31:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:31:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:31:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 19:31:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:31:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:31:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:31:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:31:51,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:31:51,658 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:31:51,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:31:51 BoogieIcfgContainer [2021-02-21 19:31:51,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:31:51,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:31:51,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:31:51,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:31:51,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:31:49" (1/3) ... [2021-02-21 19:31:51,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fb132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:31:51, skipping insertion in model container [2021-02-21 19:31:51,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:31:49" (2/3) ... [2021-02-21 19:31:51,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fb132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:31:51, skipping insertion in model container [2021-02-21 19:31:51,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:31:51" (3/3) ... [2021-02-21 19:31:51,671 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2021-02-21 19:31:51,679 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:31:51,685 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:31:51,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:31:51,732 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:31:51,733 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:31:51,733 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:31:51,733 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:31:51,733 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:31:51,733 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:31:51,734 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:31:51,734 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:31:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2021-02-21 19:31:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:31:51,781 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:51,783 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1249579655, now seen corresponding path program 1 times [2021-02-21 19:31:51,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:51,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122083363] [2021-02-21 19:31:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:51,932 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,733 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:31:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:31:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:52,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:52,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:31:52,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122083363] [2021-02-21 19:31:53,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:53,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:31:53,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794958369] [2021-02-21 19:31:53,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:31:53,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:31:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:31:53,026 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2021-02-21 19:31:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:54,885 INFO L93 Difference]: Finished difference Result 480 states and 565 transitions. [2021-02-21 19:31:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:31:54,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:31:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:54,916 INFO L225 Difference]: With dead ends: 480 [2021-02-21 19:31:54,917 INFO L226 Difference]: Without dead ends: 300 [2021-02-21 19:31:54,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:31:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-21 19:31:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 258. [2021-02-21 19:31:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-02-21 19:31:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 277 transitions. [2021-02-21 19:31:55,159 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 277 transitions. Word has length 147 [2021-02-21 19:31:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:55,160 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 277 transitions. [2021-02-21 19:31:55,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:31:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 277 transitions. [2021-02-21 19:31:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:31:55,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:55,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:55,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:31:55,167 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:55,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash 2111331227, now seen corresponding path program 1 times [2021-02-21 19:31:55,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:55,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301456691] [2021-02-21 19:31:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:55,173 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:55,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,654 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:31:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:31:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:55,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:55,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:31:55,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301456691] [2021-02-21 19:31:55,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:55,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:31:55,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402580908] [2021-02-21 19:31:55,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:31:55,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:55,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:31:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:31:55,776 INFO L87 Difference]: Start difference. First operand 258 states and 277 transitions. Second operand 4 states. [2021-02-21 19:31:56,709 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:31:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:31:57,843 INFO L93 Difference]: Finished difference Result 392 states and 435 transitions. [2021-02-21 19:31:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:31:57,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:31:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:31:57,849 INFO L225 Difference]: With dead ends: 392 [2021-02-21 19:31:57,850 INFO L226 Difference]: Without dead ends: 283 [2021-02-21 19:31:57,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:31:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-02-21 19:31:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 248. [2021-02-21 19:31:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:31:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 264 transitions. [2021-02-21 19:31:57,950 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 264 transitions. Word has length 148 [2021-02-21 19:31:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:31:57,951 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 264 transitions. [2021-02-21 19:31:57,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:31:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 264 transitions. [2021-02-21 19:31:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:31:57,954 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:31:57,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:31:57,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:31:57,955 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:31:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:31:57,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1019406349, now seen corresponding path program 1 times [2021-02-21 19:31:57,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:31:57,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774042064] [2021-02-21 19:31:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:31:57,971 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:31:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:58,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:58,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:31:58,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,515 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:31:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:31:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:31:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:31:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:31:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:31:58,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:31:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:31:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:31:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:31:58,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:31:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:31:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:31:58,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:31:58,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:31:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:31:58,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774042064] [2021-02-21 19:31:58,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:31:58,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:31:58,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497878637] [2021-02-21 19:31:58,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:31:58,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:31:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:31:58,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:31:58,711 INFO L87 Difference]: Start difference. First operand 248 states and 264 transitions. Second operand 10 states. [2021-02-21 19:31:59,477 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:31:59,942 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:00,370 WARN L202 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:32:00,780 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:01,191 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:01,597 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:03,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:03,451 INFO L93 Difference]: Finished difference Result 438 states and 497 transitions. [2021-02-21 19:32:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:32:03,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:32:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:03,459 INFO L225 Difference]: With dead ends: 438 [2021-02-21 19:32:03,459 INFO L226 Difference]: Without dead ends: 305 [2021-02-21 19:32:03,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:32:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-21 19:32:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-02-21 19:32:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 19:32:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2021-02-21 19:32:03,559 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 161 [2021-02-21 19:32:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:03,560 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2021-02-21 19:32:03,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:32:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2021-02-21 19:32:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:32:03,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:03,563 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] [2021-02-21 19:32:03,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:32:03,564 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1567687896, now seen corresponding path program 1 times [2021-02-21 19:32:03,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625522898] [2021-02-21 19:32:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:03,568 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:03,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:03,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:03,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:03,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:03,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:03,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:03,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:03,991 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:32:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:32:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:04,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:32:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:32:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:04,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:04,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:32:04,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625522898] [2021-02-21 19:32:04,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:04,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:32:04,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107165213] [2021-02-21 19:32:04,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:32:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:04,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:32:04,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:32:04,235 INFO L87 Difference]: Start difference. First operand 248 states and 263 transitions. Second operand 7 states. [2021-02-21 19:32:04,877 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:06,955 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:07,719 INFO L93 Difference]: Finished difference Result 609 states and 714 transitions. [2021-02-21 19:32:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 19:32:07,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2021-02-21 19:32:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:07,724 INFO L225 Difference]: With dead ends: 609 [2021-02-21 19:32:07,724 INFO L226 Difference]: Without dead ends: 476 [2021-02-21 19:32:07,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-02-21 19:32:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-02-21 19:32:07,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 349. [2021-02-21 19:32:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2021-02-21 19:32:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 374 transitions. [2021-02-21 19:32:07,908 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 374 transitions. Word has length 169 [2021-02-21 19:32:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:07,909 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 374 transitions. [2021-02-21 19:32:07,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:32:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 374 transitions. [2021-02-21 19:32:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-21 19:32:07,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:07,915 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] [2021-02-21 19:32:07,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:32:07,915 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:07,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2078428762, now seen corresponding path program 1 times [2021-02-21 19:32:07,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:07,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892112104] [2021-02-21 19:32:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:07,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:32:08,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,403 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:32:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:08,529 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:32:08,531 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:32:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:32:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:32:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:32:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:32:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-02-21 19:32:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:08,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-02-21 19:32:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:08,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:08,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:32:08,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892112104] [2021-02-21 19:32:08,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:08,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:32:08,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594913768] [2021-02-21 19:32:08,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:32:08,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:08,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:32:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:32:08,744 INFO L87 Difference]: Start difference. First operand 349 states and 374 transitions. Second operand 15 states. [2021-02-21 19:32:09,448 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:09,952 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:10,368 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:10,789 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:11,192 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:11,566 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:12,318 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:13,831 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:14,250 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:14,702 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:15,138 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:15,550 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:15,962 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:16,370 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:16,830 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:17,326 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:32:17,739 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:32:19,898 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:32:20,306 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:20,801 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:22,140 INFO L93 Difference]: Finished difference Result 1251 states and 1562 transitions. [2021-02-21 19:32:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:32:22,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2021-02-21 19:32:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:22,155 INFO L225 Difference]: With dead ends: 1251 [2021-02-21 19:32:22,155 INFO L226 Difference]: Without dead ends: 1017 [2021-02-21 19:32:22,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:32:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-02-21 19:32:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 718. [2021-02-21 19:32:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2021-02-21 19:32:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 791 transitions. [2021-02-21 19:32:22,640 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 791 transitions. Word has length 193 [2021-02-21 19:32:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:22,641 INFO L480 AbstractCegarLoop]: Abstraction has 718 states and 791 transitions. [2021-02-21 19:32:22,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:32:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 791 transitions. [2021-02-21 19:32:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-21 19:32:22,663 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:22,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:32:22,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:32:22,665 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:22,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1078204580, now seen corresponding path program 1 times [2021-02-21 19:32:22,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:22,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144819536] [2021-02-21 19:32:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:22,765 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 19:32:22,769 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:22,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:22,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:22,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:22,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,189 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:32:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 19:32:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 19:32:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:23,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:23,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:23,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:23,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:32:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:32:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 19:32:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 19:32:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 19:32:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-21 19:32:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-02-21 19:32:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-02-21 19:32:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-02-21 19:32:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-02-21 19:32:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-02-21 19:32:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-02-21 19:32:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:23,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:23,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:32:23,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144819536] [2021-02-21 19:32:23,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:23,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 19:32:23,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007907069] [2021-02-21 19:32:23,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 19:32:23,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:23,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 19:32:23,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-21 19:32:23,592 INFO L87 Difference]: Start difference. First operand 718 states and 791 transitions. Second operand 12 states. [2021-02-21 19:32:25,046 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:25,406 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:25,816 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-21 19:32:26,173 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:26,558 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:26,929 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:28,959 INFO L93 Difference]: Finished difference Result 1633 states and 1972 transitions. [2021-02-21 19:32:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 19:32:28,960 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 276 [2021-02-21 19:32:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:28,968 INFO L225 Difference]: With dead ends: 1633 [2021-02-21 19:32:28,968 INFO L226 Difference]: Without dead ends: 1030 [2021-02-21 19:32:28,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-21 19:32:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-02-21 19:32:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 742. [2021-02-21 19:32:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2021-02-21 19:32:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 816 transitions. [2021-02-21 19:32:29,492 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 816 transitions. Word has length 276 [2021-02-21 19:32:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:29,493 INFO L480 AbstractCegarLoop]: Abstraction has 742 states and 816 transitions. [2021-02-21 19:32:29,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 19:32:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 816 transitions. [2021-02-21 19:32:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-21 19:32:29,502 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:29,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:32:29,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:32:29,503 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -2129954884, now seen corresponding path program 1 times [2021-02-21 19:32:29,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:29,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542875981] [2021-02-21 19:32:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:29,541 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 19:32:29,544 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:32:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:29,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:29,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:29,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,950 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:32:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:32:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:29,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:32:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:29,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:32:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:29,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:29,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:32:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:30,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:32:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:32:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-21 19:32:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 19:32:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-21 19:32:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:30,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:30,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 19:32:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:30,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:32:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-21 19:32:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 19:32:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 19:32:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 19:32:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-21 19:32:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-02-21 19:32:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-02-21 19:32:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-02-21 19:32:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-02-21 19:32:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:32:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-02-21 19:32:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-02-21 19:32:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:32:30,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:30,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:32:30,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542875981] [2021-02-21 19:32:30,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:32:30,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:32:30,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811113028] [2021-02-21 19:32:30,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:32:30,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:32:30,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:32:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:32:30,401 INFO L87 Difference]: Start difference. First operand 742 states and 816 transitions. Second operand 15 states. [2021-02-21 19:32:31,206 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:32:31,617 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:32:32,012 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:32,424 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:32,804 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:33,893 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:34,282 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:34,681 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:35,084 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:32:35,467 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:32:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:32:37,454 INFO L93 Difference]: Finished difference Result 1437 states and 1704 transitions. [2021-02-21 19:32:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 19:32:37,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 276 [2021-02-21 19:32:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:32:37,460 INFO L225 Difference]: With dead ends: 1437 [2021-02-21 19:32:37,460 INFO L226 Difference]: Without dead ends: 810 [2021-02-21 19:32:37,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-21 19:32:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-02-21 19:32:37,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 594. [2021-02-21 19:32:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2021-02-21 19:32:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 649 transitions. [2021-02-21 19:32:37,729 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 649 transitions. Word has length 276 [2021-02-21 19:32:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:32:37,730 INFO L480 AbstractCegarLoop]: Abstraction has 594 states and 649 transitions. [2021-02-21 19:32:37,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:32:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 649 transitions. [2021-02-21 19:32:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-02-21 19:32:37,735 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:32:37,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:32:37,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 19:32:37,736 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:32:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:32:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash -266296775, now seen corresponding path program 1 times [2021-02-21 19:32:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:32:37,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270419003] [2021-02-21 19:32:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:32:38,045 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-02-21 19:32:38,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-02-21 19:32:38,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,322 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2021-02-21 19:32:38,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-02-21 19:32:38,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,766 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-02-21 19:32:38,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-02-21 19:32:38,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:38,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:38,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:39,079 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2021-02-21 19:32:39,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:39,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-02-21 19:32:39,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:39,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:39,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:32:39,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:32:39,121 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 19:32:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:32:39,291 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:32:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:32:39,420 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:32:39,640 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:32:39,640 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:32:39,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 19:32:39,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:32:39 BoogieIcfgContainer [2021-02-21 19:32:39,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:32:39,673 INFO L168 Benchmark]: Toolchain (without parser) took 50560.79 ms. Allocated memory was 151.0 MB in the beginning and 607.1 MB in the end (delta: 456.1 MB). Free memory was 126.3 MB in the beginning and 462.0 MB in the end (delta: -335.7 MB). Peak memory consumption was 121.4 MB. Max. memory is 8.0 GB. [2021-02-21 19:32:39,673 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:32:39,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:32:39,674 INFO L168 Benchmark]: Boogie Preprocessor took 200.94 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 132.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:32:39,674 INFO L168 Benchmark]: RCFGBuilder took 1678.71 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 76.4 MB in the end (delta: 56.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 8.0 GB. [2021-02-21 19:32:39,674 INFO L168 Benchmark]: TraceAbstraction took 48009.62 ms. Allocated memory was 151.0 MB in the beginning and 607.1 MB in the end (delta: 456.1 MB). Free memory was 75.9 MB in the beginning and 462.0 MB in the end (delta: -386.1 MB). Peak memory consumption was 70.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:32:39,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 645.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.1 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 200.94 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 132.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1678.71 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 76.4 MB in the end (delta: 56.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 48009.62 ms. Allocated memory was 151.0 MB in the beginning and 607.1 MB in the end (delta: 456.1 MB). Free memory was 75.9 MB in the beginning and 462.0 MB in the end (delta: -386.1 MB). Peak memory consumption was 70.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 926]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L575] int cleanupTimeShifts = 4; [L744] int pumpRunning = 0; [L745] int systemActive = 1; [L651] int retValue_acc ; [L652] int tmp ; [L656] FCALL select_helpers() [L657] FCALL select_features() [L658] CALL, EXPR valid_product() [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L658] RET, EXPR valid_product() [L658] tmp = valid_product() [L660] COND TRUE \read(tmp) [L662] FCALL setup() [L663] CALL runTest() [L645] CALL test() [L676] int splverifierCounter ; [L677] int tmp ; [L678] int tmp___0 ; [L679] int tmp___1 ; [L680] int tmp___2 ; [L683] splverifierCounter = 0 [L685] COND TRUE 1 [L687] COND TRUE splverifierCounter < 4 [L693] tmp = __VERIFIER_nondet_int() [L695] COND TRUE \read(tmp) [L697] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L697] RET waterRise() [L703] tmp___0 = __VERIFIER_nondet_int() [L705] COND FALSE !(\read(tmp___0)) [L713] tmp___2 = __VERIFIER_nondet_int() [L715] COND TRUE \read(tmp___2) [L717] CALL startSystem() [L917] systemActive = 1 [L717] RET startSystem() [L730] CALL timeShift() [L751] COND FALSE !(\read(pumpRunning)) [L758] COND TRUE \read(systemActive) [L760] CALL processEnvironment() [L780] int tmp ; [L783] COND TRUE ! pumpRunning [L785] CALL, EXPR isHighWaterLevel() [L895] int retValue_acc ; [L896] int tmp ; [L897] int tmp___0 ; [L901] CALL, EXPR isHighWaterSensorDry() [L129] int retValue_acc ; [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); [L901] RET, EXPR isHighWaterSensorDry() [L901] tmp = isHighWaterSensorDry() [L903] COND FALSE !(\read(tmp)) [L906] tmp___0 = 1 [L908] retValue_acc = tmp___0 [L909] return (retValue_acc); [L785] RET, EXPR isHighWaterLevel() [L785] tmp = isHighWaterLevel() [L787] COND TRUE \read(tmp) [L789] CALL activatePump() [L814] int tmp ; [L818] CALL, EXPR isMethaneAlarm() [L839] int retValue_acc ; [L843] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L843] RET, EXPR isMethaneLevelCritical() [L843] retValue_acc = isMethaneLevelCritical() [L845] return (retValue_acc); [L818] RET, EXPR isMethaneAlarm() [L818] tmp = isMethaneAlarm() [L820] COND FALSE !(\read(tmp)) [L824] CALL activatePump__wrappee__highWaterSensor() [L808] pumpRunning = 1 [L824] RET activatePump__wrappee__highWaterSensor() [L789] RET activatePump() [L760] RET processEnvironment() [L766] CALL __utac_acc__Specification4_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L555] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L555] RET, EXPR getWaterLevel() [L555] tmp = getWaterLevel() [L557] COND FALSE !(tmp == 0) [L766] RET __utac_acc__Specification4_spec__1() [L730] RET timeShift() [L685] COND TRUE 1 [L687] COND TRUE splverifierCounter < 4 [L693] tmp = __VERIFIER_nondet_int() [L695] COND TRUE \read(tmp) [L697] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L697] RET waterRise() [L703] tmp___0 = __VERIFIER_nondet_int() [L705] COND FALSE !(\read(tmp___0)) [L713] tmp___2 = __VERIFIER_nondet_int() [L715] COND TRUE \read(tmp___2) [L717] CALL startSystem() [L917] systemActive = 1 [L717] RET startSystem() [L730] CALL timeShift() [L751] COND TRUE \read(pumpRunning) [L753] CALL lowerWaterLevel() [L55] COND FALSE !(waterLevel > 0) [L753] RET lowerWaterLevel() [L758] COND TRUE \read(systemActive) [L760] CALL processEnvironment() [L780] int tmp ; [L783] COND FALSE !(! pumpRunning) [L798] FCALL processEnvironment__wrappee__base() [L760] RET processEnvironment() [L766] CALL __utac_acc__Specification4_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L555] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L555] RET, EXPR getWaterLevel() [L555] tmp = getWaterLevel() [L557] COND TRUE tmp == 0 [L559] CALL, EXPR isPumpRunning() [L850] int retValue_acc ; [L853] retValue_acc = pumpRunning [L854] return (retValue_acc); [L559] RET, EXPR isPumpRunning() [L559] tmp___0 = isPumpRunning() [L561] COND TRUE \read(tmp___0) [L563] CALL __automaton_fail() [L926] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.9s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 38.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1653 SDtfs, 3506 SDslu, 4001 SDs, 0 SdLazy, 7682 SolverSat, 1008 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1064 StatesRemovedByMinimization, 7 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...