/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_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:52:13,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:52:13,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:52:14,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:52:14,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:52:14,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:52:14,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:52:14,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:52:14,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:52:14,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:52:14,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:52:14,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:52:14,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:52:14,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:52:14,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:52:14,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:52:14,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:52:14,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:52:14,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:52:14,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:52:14,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:52:14,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:52:14,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:52:14,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:52:14,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:52:14,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:52:14,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:52:14,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:52:14,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:52:14,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:52:14,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:52:14,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:52:14,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:52:14,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:52:14,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:52:14,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:52:14,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:52:14,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:52:14,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:52:14,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:52:14,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:52:14,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:52:14,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:52:14,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:52:14,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:52:14,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:52:14,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:52:14,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:52:14,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:52:14,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:52:14,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:52:14,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:52:14,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:52:14,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:52:14,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:52:14,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:52:14,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:52:14,180 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:52:14,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:52:14,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:52:14,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:14,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:52:14,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:52:14,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:52:14,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:52:14,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:52:14,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:52:14,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:52:14,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:52:14,648 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:52:14,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-10-23 19:52:14,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fbb21dc/74c94763fe084496b7702ff887d79f56/FLAGed9bf9c81 [2020-10-23 19:52:15,386 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:52:15,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-10-23 19:52:15,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fbb21dc/74c94763fe084496b7702ff887d79f56/FLAGed9bf9c81 [2020-10-23 19:52:15,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83fbb21dc/74c94763fe084496b7702ff887d79f56 [2020-10-23 19:52:15,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:52:15,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:52:15,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:15,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:52:15,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:52:15,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:15" (1/1) ... [2020-10-23 19:52:15,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bf5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:15, skipping insertion in model container [2020-10-23 19:52:15,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:15" (1/1) ... [2020-10-23 19:52:15,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:52:15,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:52:16,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:16,120 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:52:16,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:16,265 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:52:16,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16 WrapperNode [2020-10-23 19:52:16,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:16,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:52:16,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:52:16,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:52:16,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (1/1) ... [2020-10-23 19:52:16,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:52:16,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:52:16,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:52:16,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:52:16,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (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 [2020-10-23 19:52:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:52:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:52:16,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:16,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:52:16,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:16,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:16,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:16,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:52:16,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:52:16,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:52:16,465 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:52:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:52:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:52:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:52:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:52:16,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:52:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:52:16,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:52:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:52:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:52:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:52:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:52:16,469 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:52:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:52:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:52:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:52:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:52:16,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:52:16,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:52:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:52:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:52:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:52:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:52:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:52:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:52:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:52:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:52:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:52:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:52:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:52:17,665 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:52:17,665 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:52:17,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:17 BoogieIcfgContainer [2020-10-23 19:52:17,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:52:17,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:52:17,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:52:17,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:52:17,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:52:15" (1/3) ... [2020-10-23 19:52:17,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502944fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:17, skipping insertion in model container [2020-10-23 19:52:17,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:16" (2/3) ... [2020-10-23 19:52:17,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502944fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:17, skipping insertion in model container [2020-10-23 19:52:17,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:17" (3/3) ... [2020-10-23 19:52:17,683 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-10-23 19:52:17,695 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:52:17,701 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:52:17,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:52:17,748 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:52:17,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:52:17,748 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:52:17,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:52:17,749 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:52:17,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:52:17,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:52:17,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:52:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-23 19:52:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:52:17,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:17,809 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] [2020-10-23 19:52:17,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1188886191, now seen corresponding path program 1 times [2020-10-23 19:52:17,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:17,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250976866] [2020-10-23 19:52:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:17,912 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,787 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:19,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250976866] [2020-10-23 19:52:19,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:19,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:52:19,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846399327] [2020-10-23 19:52:19,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:52:19,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:19,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:52:19,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:19,037 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-23 19:52:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:20,645 INFO L93 Difference]: Finished difference Result 463 states and 548 transitions. [2020-10-23 19:52:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:52:20,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:52:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:20,663 INFO L225 Difference]: With dead ends: 463 [2020-10-23 19:52:20,664 INFO L226 Difference]: Without dead ends: 299 [2020-10-23 19:52:20,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-23 19:52:20,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 251. [2020-10-23 19:52:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 19:52:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-10-23 19:52:20,829 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 154 [2020-10-23 19:52:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:20,830 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-10-23 19:52:20,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:52:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-10-23 19:52:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:52:20,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:20,836 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] [2020-10-23 19:52:20,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:52:20,836 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:20,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1672534681, now seen corresponding path program 1 times [2020-10-23 19:52:20,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:20,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085905470] [2020-10-23 19:52:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:20,842 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,379 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:52:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:52:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085905470] [2020-10-23 19:52:21,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:21,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:52:21,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695186541] [2020-10-23 19:52:21,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:52:21,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:52:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:52:21,477 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 5 states. [2020-10-23 19:52:22,266 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:23,337 INFO L93 Difference]: Finished difference Result 380 states and 429 transitions. [2020-10-23 19:52:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:52:23,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:52:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:23,347 INFO L225 Difference]: With dead ends: 380 [2020-10-23 19:52:23,348 INFO L226 Difference]: Without dead ends: 288 [2020-10-23 19:52:23,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:52:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-23 19:52:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 241. [2020-10-23 19:52:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-23 19:52:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 258 transitions. [2020-10-23 19:52:23,444 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 258 transitions. Word has length 155 [2020-10-23 19:52:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:23,445 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 258 transitions. [2020-10-23 19:52:23,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:52:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 258 transitions. [2020-10-23 19:52:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-23 19:52:23,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:23,448 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] [2020-10-23 19:52:23,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:52:23,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1537043142, now seen corresponding path program 1 times [2020-10-23 19:52:23,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:23,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190733263] [2020-10-23 19:52:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:23,453 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:23,895 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:23,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-23 19:52:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:24,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190733263] [2020-10-23 19:52:24,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:24,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:52:24,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477454334] [2020-10-23 19:52:24,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:52:24,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:24,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:52:24,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:52:24,112 INFO L87 Difference]: Start difference. First operand 241 states and 258 transitions. Second operand 10 states. [2020-10-23 19:52:24,805 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:25,306 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:52:25,691 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:52:26,112 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:26,502 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:26,882 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:28,111 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:30,271 INFO L93 Difference]: Finished difference Result 625 states and 722 transitions. [2020-10-23 19:52:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:52:30,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-23 19:52:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:30,278 INFO L225 Difference]: With dead ends: 625 [2020-10-23 19:52:30,278 INFO L226 Difference]: Without dead ends: 504 [2020-10-23 19:52:30,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:52:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-23 19:52:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 417. [2020-10-23 19:52:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-23 19:52:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 462 transitions. [2020-10-23 19:52:30,510 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 462 transitions. Word has length 164 [2020-10-23 19:52:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:30,511 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 462 transitions. [2020-10-23 19:52:30,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:52:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 462 transitions. [2020-10-23 19:52:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 19:52:30,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:30,514 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] [2020-10-23 19:52:30,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:52:30,515 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:30,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 833776681, now seen corresponding path program 1 times [2020-10-23 19:52:30,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:30,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463751074] [2020-10-23 19:52:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:30,519 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,910 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:52:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:52:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 19:52:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 19:52:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:31,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463751074] [2020-10-23 19:52:31,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:31,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:52:31,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499201437] [2020-10-23 19:52:31,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:52:31,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:31,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:52:31,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:52:31,138 INFO L87 Difference]: Start difference. First operand 417 states and 462 transitions. Second operand 7 states. [2020-10-23 19:52:31,818 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:33,781 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:34,548 INFO L93 Difference]: Finished difference Result 1050 states and 1247 transitions. [2020-10-23 19:52:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:52:34,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-23 19:52:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:34,556 INFO L225 Difference]: With dead ends: 1050 [2020-10-23 19:52:34,556 INFO L226 Difference]: Without dead ends: 753 [2020-10-23 19:52:34,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:52:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2020-10-23 19:52:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 623. [2020-10-23 19:52:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-23 19:52:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 692 transitions. [2020-10-23 19:52:34,797 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 692 transitions. Word has length 172 [2020-10-23 19:52:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:34,798 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 692 transitions. [2020-10-23 19:52:34,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:52:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 692 transitions. [2020-10-23 19:52:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:52:34,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:34,806 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] [2020-10-23 19:52:34,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:52:34,806 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash -640030055, now seen corresponding path program 1 times [2020-10-23 19:52:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:34,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635343008] [2020-10-23 19:52:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:34,815 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,448 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:52:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:52:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:52:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:35,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635343008] [2020-10-23 19:52:35,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:35,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:52:35,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169747561] [2020-10-23 19:52:35,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:52:35,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:35,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:52:35,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:52:35,665 INFO L87 Difference]: Start difference. First operand 623 states and 692 transitions. Second operand 10 states. [2020-10-23 19:52:36,308 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:37,711 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:38,106 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:38,524 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:38,916 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:39,298 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:39,658 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:40,025 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:40,561 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:42,417 INFO L93 Difference]: Finished difference Result 1671 states and 1968 transitions. [2020-10-23 19:52:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:52:42,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:52:42,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:42,426 INFO L225 Difference]: With dead ends: 1671 [2020-10-23 19:52:42,426 INFO L226 Difference]: Without dead ends: 1168 [2020-10-23 19:52:42,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:52:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-10-23 19:52:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1021. [2020-10-23 19:52:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2020-10-23 19:52:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1139 transitions. [2020-10-23 19:52:42,877 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1139 transitions. Word has length 173 [2020-10-23 19:52:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:42,878 INFO L481 AbstractCegarLoop]: Abstraction has 1021 states and 1139 transitions. [2020-10-23 19:52:42,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:52:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1139 transitions. [2020-10-23 19:52:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:52:42,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:42,881 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] [2020-10-23 19:52:42,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:52:42,882 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1609699001, now seen corresponding path program 1 times [2020-10-23 19:52:42,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:42,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997454801] [2020-10-23 19:52:42,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:42,886 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,304 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:52:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:52:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:52:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:43,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997454801] [2020-10-23 19:52:43,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:43,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:52:43,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024282597] [2020-10-23 19:52:43,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:52:43,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:43,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:52:43,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:52:43,512 INFO L87 Difference]: Start difference. First operand 1021 states and 1139 transitions. Second operand 11 states. [2020-10-23 19:52:44,181 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:45,910 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:46,311 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:46,783 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:47,196 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:52:47,560 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:48,329 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:48,689 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:49,178 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:50,526 INFO L93 Difference]: Finished difference Result 2192 states and 2558 transitions. [2020-10-23 19:52:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 19:52:50,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:52:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:50,536 INFO L225 Difference]: With dead ends: 2192 [2020-10-23 19:52:50,536 INFO L226 Difference]: Without dead ends: 1291 [2020-10-23 19:52:50,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:52:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-10-23 19:52:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1015. [2020-10-23 19:52:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-23 19:52:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1127 transitions. [2020-10-23 19:52:50,985 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1127 transitions. Word has length 178 [2020-10-23 19:52:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:50,986 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1127 transitions. [2020-10-23 19:52:50,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:52:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1127 transitions. [2020-10-23 19:52:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-23 19:52:50,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:50,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:52:50,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:52:50,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:50,991 INFO L82 PathProgramCache]: Analyzing trace with hash 161295398, now seen corresponding path program 1 times [2020-10-23 19:52:50,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:50,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898801773] [2020-10-23 19:52:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:50,995 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,348 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:52:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:52:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:52:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:52:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:52:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:52:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:51,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898801773] [2020-10-23 19:52:51,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:51,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:52:51,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109369277] [2020-10-23 19:52:51,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:52:51,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:52:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:52:51,578 INFO L87 Difference]: Start difference. First operand 1015 states and 1127 transitions. Second operand 11 states. [2020-10-23 19:52:53,227 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:53,638 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:52:54,041 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:52:54,432 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:54,838 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:52:55,222 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:56,837 INFO L93 Difference]: Finished difference Result 2330 states and 2768 transitions. [2020-10-23 19:52:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:52:56,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 202 [2020-10-23 19:52:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:56,847 INFO L225 Difference]: With dead ends: 2330 [2020-10-23 19:52:56,847 INFO L226 Difference]: Without dead ends: 1435 [2020-10-23 19:52:56,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:52:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-10-23 19:52:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1047. [2020-10-23 19:52:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-23 19:52:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1159 transitions. [2020-10-23 19:52:57,259 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1159 transitions. Word has length 202 [2020-10-23 19:52:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:57,260 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1159 transitions. [2020-10-23 19:52:57,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:52:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1159 transitions. [2020-10-23 19:52:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-23 19:52:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:57,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:52:57,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:52:57,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:57,266 INFO L82 PathProgramCache]: Analyzing trace with hash -812574778, now seen corresponding path program 1 times [2020-10-23 19:52:57,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:57,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979678801] [2020-10-23 19:52:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:57,269 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,672 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:52:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:52:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:52:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:52:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:52:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:52:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:57,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979678801] [2020-10-23 19:52:57,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:57,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:52:57,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084817329] [2020-10-23 19:52:57,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:52:57,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:52:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:52:57,925 INFO L87 Difference]: Start difference. First operand 1047 states and 1159 transitions. Second operand 14 states. [2020-10-23 19:52:58,693 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:52:59,073 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:52:59,478 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:59,911 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:00,319 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:01,548 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:01,964 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:02,428 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:02,885 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:03,294 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:04,979 INFO L93 Difference]: Finished difference Result 2406 states and 2881 transitions. [2020-10-23 19:53:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:53:04,980 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 202 [2020-10-23 19:53:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:04,990 INFO L225 Difference]: With dead ends: 2406 [2020-10-23 19:53:04,990 INFO L226 Difference]: Without dead ends: 1479 [2020-10-23 19:53:04,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:53:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-10-23 19:53:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1071. [2020-10-23 19:53:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-10-23 19:53:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1183 transitions. [2020-10-23 19:53:05,573 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1183 transitions. Word has length 202 [2020-10-23 19:53:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:05,573 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 1183 transitions. [2020-10-23 19:53:05,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:53:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1183 transitions. [2020-10-23 19:53:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-23 19:53:05,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:05,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:05,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:53:05,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1842098537, now seen corresponding path program 1 times [2020-10-23 19:53:05,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:05,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944215856] [2020-10-23 19:53:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:05,583 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:05,981 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 19:53:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 19:53:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 19:53:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:06,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944215856] [2020-10-23 19:53:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:06,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:53:06,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390356111] [2020-10-23 19:53:06,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:53:06,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:53:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:53:06,158 INFO L87 Difference]: Start difference. First operand 1071 states and 1183 transitions. Second operand 8 states. [2020-10-23 19:53:06,901 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:07,791 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:11,709 INFO L93 Difference]: Finished difference Result 3615 states and 4408 transitions. [2020-10-23 19:53:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 19:53:11,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-23 19:53:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:11,726 INFO L225 Difference]: With dead ends: 3615 [2020-10-23 19:53:11,727 INFO L226 Difference]: Without dead ends: 2664 [2020-10-23 19:53:11,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:53:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2020-10-23 19:53:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2113. [2020-10-23 19:53:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-10-23 19:53:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2389 transitions. [2020-10-23 19:53:12,600 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2389 transitions. Word has length 202 [2020-10-23 19:53:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:12,601 INFO L481 AbstractCegarLoop]: Abstraction has 2113 states and 2389 transitions. [2020-10-23 19:53:12,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:53:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2389 transitions. [2020-10-23 19:53:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-23 19:53:12,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:12,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:12,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:53:12,607 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1499841467, now seen corresponding path program 1 times [2020-10-23 19:53:12,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:12,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272332704] [2020-10-23 19:53:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:12,619 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,027 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:53:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:53:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:53:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:53:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:53:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:13,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272332704] [2020-10-23 19:53:13,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:13,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:53:13,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684347052] [2020-10-23 19:53:13,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:53:13,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:13,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:53:13,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:53:13,199 INFO L87 Difference]: Start difference. First operand 2113 states and 2389 transitions. Second operand 8 states. [2020-10-23 19:53:13,862 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:18,460 INFO L93 Difference]: Finished difference Result 4176 states and 5071 transitions. [2020-10-23 19:53:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 19:53:18,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-23 19:53:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:18,487 INFO L225 Difference]: With dead ends: 4176 [2020-10-23 19:53:18,487 INFO L226 Difference]: Without dead ends: 4172 [2020-10-23 19:53:18,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-10-23 19:53:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2020-10-23 19:53:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3261. [2020-10-23 19:53:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3261 states. [2020-10-23 19:53:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 3707 transitions. [2020-10-23 19:53:19,763 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 3707 transitions. Word has length 207 [2020-10-23 19:53:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:19,763 INFO L481 AbstractCegarLoop]: Abstraction has 3261 states and 3707 transitions. [2020-10-23 19:53:19,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:53:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 3707 transitions. [2020-10-23 19:53:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-23 19:53:19,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:19,772 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] [2020-10-23 19:53:19,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:53:19,773 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:19,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:19,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1257065967, now seen corresponding path program 1 times [2020-10-23 19:53:19,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:19,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827777969] [2020-10-23 19:53:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:20,186 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:53:20,347 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:20,801 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:53:20,933 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:21,371 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-23 19:53:21,517 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:53:21,916 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:53:22,067 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:53:22,431 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:53:22,551 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:53:22,872 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-23 19:53:22,996 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:53:23,325 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:53:23,450 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:53:23,740 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-23 19:53:23,854 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:53:24,255 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:53:24,403 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:53:24,803 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:53:24,936 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:53:25,360 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-23 19:53:25,510 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-23 19:53:25,871 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:53:25,994 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:53:26,362 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 82 [2020-10-23 19:53:26,489 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-23 19:53:26,813 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-23 19:53:26,925 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:53:27,643 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-10-23 19:53:28,363 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:29,069 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:29,816 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:30,571 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:31,258 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:31,964 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:32,658 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:33,349 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:34,084 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:34,776 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:35,474 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:36,166 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-10-23 19:53:36,877 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-10-23 19:53:37,625 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 184 [2020-10-23 19:53:38,373 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 185 [2020-10-23 19:53:38,378 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:39,108 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:39,802 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:40,498 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:41,218 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:41,940 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:42,680 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:43,393 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:44,097 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:44,798 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:45,492 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:46,162 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:46,923 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:47,663 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:48,393 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:49,093 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:49,803 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:49,807 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:53:50,491 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:51,204 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:51,893 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:52,615 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:53,325 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:54,032 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:54,746 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:55,524 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:56,227 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:56,884 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:53:57,579 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:58,273 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:58,966 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:53:59,685 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:54:00,388 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-23 19:54:01,091 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 183 [2020-10-23 19:54:01,094 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:01,809 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:02,544 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:03,289 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:04,064 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:04,801 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:05,508 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:06,214 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:06,923 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:07,642 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:08,389 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:09,106 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:09,798 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:10,505 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:11,208 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:11,917 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:12,659 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:12,662 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:13,335 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:14,024 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:14,710 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:15,399 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:16,088 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:16,822 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:17,533 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:18,235 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:54:18,238 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:18,938 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:54:19,618 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:54:20,306 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:21,043 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:54:21,766 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:22,497 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:23,222 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-23 19:54:23,977 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:23,981 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:24,746 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:25,542 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:26,321 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:27,075 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:27,853 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:28,628 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:29,389 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:30,161 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-23 19:54:30,164 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:30,916 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:31,675 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:32,426 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2020-10-23 19:54:33,161 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2020-10-23 19:54:33,907 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2020-10-23 19:54:34,645 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:35,390 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 184 [2020-10-23 19:54:36,110 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 185 [2020-10-23 19:54:36,113 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:36,830 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:37,587 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:38,316 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:39,040 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:39,806 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:40,538 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:41,322 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:42,073 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:42,800 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:43,528 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:44,276 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:45,044 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:45,773 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:46,520 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:47,282 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:48,015 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:48,018 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:48,756 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:49,506 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:50,222 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:50,957 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:51,723 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:52,453 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:53,182 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:53,928 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:54:53,931 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:54:54,724 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:55,485 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:56,211 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:56,984 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:57,764 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:58,507 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:59,236 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:54:59,984 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:00,712 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:01,452 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:02,209 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:02,962 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:03,705 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:04,430 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:05,165 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:05,894 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 187 [2020-10-23 19:55:05,898 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:06,630 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:07,366 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:08,097 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:08,838 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:09,598 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:10,366 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:11,113 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:11,863 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-10-23 19:55:11,866 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:12,585 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:13,322 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:14,091 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:14,883 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:15,610 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:16,342 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:17,065 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:17,778 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-23 19:55:17,781 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:18,505 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:19,259 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:19,978 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:20,710 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:21,456 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:22,210 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:22,953 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:23,684 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-10-23 19:55:23,686 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:55:24,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:55:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:55:25,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:55:25,852 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:55:25,853 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:55:25,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 19:55:25,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:55:25 BoogieIcfgContainer [2020-10-23 19:55:25,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:55:25,884 INFO L168 Benchmark]: Toolchain (without parser) took 190169.57 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 106.6 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 792.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:55:25,884 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:55:25,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.26 ms. Allocated memory is still 151.0 MB. Free memory was 105.9 MB in the beginning and 127.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2020-10-23 19:55:25,885 INFO L168 Benchmark]: Boogie Preprocessor took 110.62 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 123.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:55:25,885 INFO L168 Benchmark]: RCFGBuilder took 1293.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.3 MB in the beginning and 99.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. [2020-10-23 19:55:25,886 INFO L168 Benchmark]: TraceAbstraction took 188207.00 ms. Allocated memory was 181.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 99.3 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 754.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:55:25,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 543.26 ms. Allocated memory is still 151.0 MB. Free memory was 105.9 MB in the beginning and 127.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 110.62 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 123.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1293.17 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 123.3 MB in the beginning and 99.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 188207.00 ms. Allocated memory was 181.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 99.3 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 754.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L418] int pumpRunning = 0; [L419] int systemActive = 1; [L657] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L725] int retValue_acc ; [L728] retValue_acc = 1 [L729] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L662] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L590] int splverifierCounter ; [L591] int tmp ; [L592] int tmp___0 ; [L593] int tmp___1 ; [L594] int tmp___2 ; [L597] splverifierCounter = 0 [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND TRUE \read(tmp) [L611] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L611] RET waterRise() [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND TRUE \read(tmp___0) [L621] CALL changeMethaneLevel() [L871] COND FALSE !(\read(methaneLevelCritical)) [L874] methaneLevelCritical = 1 [L621] RET changeMethaneLevel() [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND FALSE !(\read(pumpRunning)) [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND TRUE ! pumpRunning [L460] CALL, EXPR isHighWaterLevel() [L552] int retValue_acc ; [L553] int tmp ; [L554] int tmp___0 ; [L558] CALL, EXPR isHighWaterSensorDry() [L921] int retValue_acc ; [L924] COND FALSE !(waterLevel < 2) [L928] retValue_acc = 0 [L929] return (retValue_acc); [L558] RET, EXPR isHighWaterSensorDry() [L558] tmp = isHighWaterSensorDry() [L560] COND FALSE !(\read(tmp)) [L563] tmp___0 = 1 [L565] retValue_acc = tmp___0 [L566] return (retValue_acc); [L460] RET, EXPR isHighWaterLevel() [L460] tmp = isHighWaterLevel() [L462] COND TRUE \read(tmp) [L464] CALL activatePump() [L483] pumpRunning = 1 [L464] RET activatePump() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND FALSE !(\read(methAndRunningLastTime)) [L684] methAndRunningLastTime = 1 [L441] RET __utac_acc__Specification2_spec__2() [L644] RET timeShift() [L599] COND TRUE 1 [L601] COND TRUE splverifierCounter < 4 [L607] tmp = __VERIFIER_nondet_int() [L609] COND FALSE !(\read(tmp)) [L617] tmp___0 = __VERIFIER_nondet_int() [L619] COND FALSE !(\read(tmp___0)) [L627] tmp___2 = __VERIFIER_nondet_int() [L629] COND TRUE \read(tmp___2) [L644] CALL timeShift() [L426] COND TRUE \read(pumpRunning) [L428] CALL lowerWaterLevel() [L847] COND TRUE waterLevel > 0 [L848] waterLevel = waterLevel - 1 [L428] RET lowerWaterLevel() [L433] COND TRUE \read(systemActive) [L435] CALL processEnvironment() [L455] int tmp ; [L458] COND FALSE !(! pumpRunning) [L473] FCALL processEnvironment__wrappee__base() [L435] RET processEnvironment() [L441] CALL __utac_acc__Specification2_spec__2() [L667] int tmp ; [L668] int tmp___0 ; [L672] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L672] RET, EXPR isMethaneLevelCritical() [L672] tmp = isMethaneLevelCritical() [L674] COND TRUE \read(tmp) [L676] CALL, EXPR isPumpRunning() [L507] int retValue_acc ; [L510] retValue_acc = pumpRunning [L511] return (retValue_acc); [L676] RET, EXPR isPumpRunning() [L676] tmp___0 = isPumpRunning() [L678] COND TRUE \read(tmp___0) [L679] COND TRUE \read(methAndRunningLastTime) [L681] CALL __automaton_fail() [L738] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product35.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 634 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 188.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 50.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2372 SDtfs, 6646 SDslu, 4673 SDs, 0 SdLazy, 8887 SolverSat, 1959 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3261occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2993 StatesRemovedByMinimization, 10 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...