/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:46:23,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:46:23,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:46:23,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:46:23,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:46:23,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:46:23,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:46:23,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:46:23,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:46:23,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:46:23,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:46:23,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:46:23,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:46:23,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:46:23,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:46:23,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:46:23,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:46:23,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:46:23,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:46:23,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:46:23,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:46:23,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:46:23,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:46:23,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:46:23,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:46:23,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:46:23,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:46:23,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:46:23,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:46:23,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:46:23,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:46:23,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:46:23,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:46:23,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:46:23,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:46:23,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:46:23,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:46:23,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:46:23,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:46:23,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:46:23,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:46:23,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:46:23,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:46:23,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:46:23,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:46:23,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:46:23,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:46:23,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:46:23,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:46:23,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:46:23,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:46:23,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:46:23,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:46:23,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:46:23,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:46:23,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:46:23,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:46:23,182 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:46:23,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:46:23,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:46:23,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:46:23,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:46:23,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:46:23,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:46:23,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:46:23,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:46:23,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:46:23,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:46:23,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:46:23,608 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:46:23,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-11-06 23:46:23,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169610038/86a4638ad1914c9a898e901ab2ca6b12/FLAGf314ca918 [2020-11-06 23:46:24,412 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:46:24,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product50.cil.c [2020-11-06 23:46:24,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169610038/86a4638ad1914c9a898e901ab2ca6b12/FLAGf314ca918 [2020-11-06 23:46:24,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169610038/86a4638ad1914c9a898e901ab2ca6b12 [2020-11-06 23:46:24,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:46:24,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:46:24,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:24,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:46:24,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:46:24,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:24" (1/1) ... [2020-11-06 23:46:24,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aeb1f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:24, skipping insertion in model container [2020-11-06 23:46:24,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:46:24" (1/1) ... [2020-11-06 23:46:24,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:46:24,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:46:25,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:25,179 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:46:25,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:46:25,311 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:46:25,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25 WrapperNode [2020-11-06 23:46:25,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:46:25,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:46:25,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:46:25,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:46:25,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (1/1) ... [2020-11-06 23:46:25,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:46:25,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:46:25,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:46:25,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:46:25,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (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 [2020-11-06 23:46:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:46:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:46:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:46:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:46:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:46:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:46:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:46:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:46:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:46:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:46:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-11-06 23:46:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:46:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:46:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:46:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:46:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:46:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:46:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:46:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:46:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:46:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:46:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:46:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:46:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:46:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:46:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:46:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:46:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:46:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:46:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:46:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:46:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-11-06 23:46:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-06 23:46:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:46:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:46:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:46:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:46:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:46:25,608 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:46:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:46:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:46:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:46:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:46:25,609 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:46:25,610 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:46:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:46:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:46:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-11-06 23:46:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:46:25,611 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:46:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:46:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:46:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:46:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:46:25,612 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:46:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:46:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:46:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:46:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:46:25,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:46:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-06 23:46:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:46:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:46:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:46:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:46:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:46:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-11-06 23:46:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-11-06 23:46:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:46:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:46:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:46:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:46:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:46:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:46:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:46:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:46:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:46:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:46:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:46:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:46:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:46:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:46:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:46:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:46:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:46:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:46:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:46:27,070 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:46:27,071 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:46:27,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:27 BoogieIcfgContainer [2020-11-06 23:46:27,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:46:27,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:46:27,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:46:27,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:46:27,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:46:24" (1/3) ... [2020-11-06 23:46:27,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196f57f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:27, skipping insertion in model container [2020-11-06 23:46:27,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:46:25" (2/3) ... [2020-11-06 23:46:27,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196f57f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:46:27, skipping insertion in model container [2020-11-06 23:46:27,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:46:27" (3/3) ... [2020-11-06 23:46:27,082 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-11-06 23:46:27,098 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:46:27,102 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:46:27,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:46:27,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:46:27,137 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:46:27,137 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:46:27,137 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:46:27,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:46:27,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:46:27,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:46:27,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:46:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-11-06 23:46:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:46:27,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:27,181 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] [2020-11-06 23:46:27,181 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]=== [2020-11-06 23:46:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1635378702, now seen corresponding path program 1 times [2020-11-06 23:46:27,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:27,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950616366] [2020-11-06 23:46:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:27,275 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,207 WARN L194 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:28,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:46:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:28,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950616366] [2020-11-06 23:46:28,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:28,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:46:28,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93245658] [2020-11-06 23:46:28,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:46:28,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:28,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:46:28,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:28,497 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-11-06 23:46:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:30,052 INFO L93 Difference]: Finished difference Result 508 states and 601 transitions. [2020-11-06 23:46:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:46:30,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:46:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:30,089 INFO L225 Difference]: With dead ends: 508 [2020-11-06 23:46:30,089 INFO L226 Difference]: Without dead ends: 313 [2020-11-06 23:46:30,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:46:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-11-06 23:46:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 271. [2020-11-06 23:46:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-11-06 23:46:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 293 transitions. [2020-11-06 23:46:30,252 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 293 transitions. Word has length 148 [2020-11-06 23:46:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:30,253 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 293 transitions. [2020-11-06 23:46:30,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:46:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 293 transitions. [2020-11-06 23:46:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:46:30,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:30,259 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] [2020-11-06 23:46:30,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:46:30,259 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]=== [2020-11-06 23:46:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash 853912817, now seen corresponding path program 1 times [2020-11-06 23:46:30,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:30,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688754475] [2020-11-06 23:46:30,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:30,265 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,663 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:30,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:46:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:30,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688754475] [2020-11-06 23:46:30,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:30,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:46:30,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460968938] [2020-11-06 23:46:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:46:30,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:30,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:46:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:46:30,763 INFO L87 Difference]: Start difference. First operand 271 states and 293 transitions. Second operand 4 states. [2020-11-06 23:46:31,448 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:32,562 INFO L93 Difference]: Finished difference Result 418 states and 468 transitions. [2020-11-06 23:46:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:46:32,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:46:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:32,568 INFO L225 Difference]: With dead ends: 418 [2020-11-06 23:46:32,568 INFO L226 Difference]: Without dead ends: 296 [2020-11-06 23:46:32,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:46:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-11-06 23:46:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-11-06 23:46:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-06 23:46:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 280 transitions. [2020-11-06 23:46:32,659 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 280 transitions. Word has length 149 [2020-11-06 23:46:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:32,660 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 280 transitions. [2020-11-06 23:46:32,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:46:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 280 transitions. [2020-11-06 23:46:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 23:46:32,663 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:32,663 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] [2020-11-06 23:46:32,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:46:32,664 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]=== [2020-11-06 23:46:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:32,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1513788249, now seen corresponding path program 1 times [2020-11-06 23:46:32,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:32,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895503501] [2020-11-06 23:46:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:32,669 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,025 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:33,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:46:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-06 23:46:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:46:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:33,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895503501] [2020-11-06 23:46:33,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:33,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:33,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2918857] [2020-11-06 23:46:33,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:33,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:33,172 INFO L87 Difference]: Start difference. First operand 261 states and 280 transitions. Second operand 10 states. [2020-11-06 23:46:33,765 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:34,112 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:34,402 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:46:34,687 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:34,959 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:35,259 WARN L194 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:36,911 INFO L93 Difference]: Finished difference Result 464 states and 530 transitions. [2020-11-06 23:46:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:46:36,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-11-06 23:46:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:36,918 INFO L225 Difference]: With dead ends: 464 [2020-11-06 23:46:36,918 INFO L226 Difference]: Without dead ends: 318 [2020-11-06 23:46:36,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:46:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-06 23:46:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 261. [2020-11-06 23:46:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-06 23:46:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 279 transitions. [2020-11-06 23:46:37,056 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 279 transitions. Word has length 162 [2020-11-06 23:46:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:37,057 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 279 transitions. [2020-11-06 23:46:37,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:46:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 279 transitions. [2020-11-06 23:46:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-11-06 23:46:37,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:37,060 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] [2020-11-06 23:46:37,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:46:37,061 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]=== [2020-11-06 23:46:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:37,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2112923110, now seen corresponding path program 1 times [2020-11-06 23:46:37,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:37,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424269928] [2020-11-06 23:46:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:37,065 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,411 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:46:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-11-06 23:46:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-11-06 23:46:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:37,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424269928] [2020-11-06 23:46:37,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:37,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:46:37,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048655657] [2020-11-06 23:46:37,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:46:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:46:37,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:46:37,593 INFO L87 Difference]: Start difference. First operand 261 states and 279 transitions. Second operand 7 states. [2020-11-06 23:46:38,147 WARN L194 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:39,816 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:40,794 INFO L93 Difference]: Finished difference Result 646 states and 762 transitions. [2020-11-06 23:46:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-06 23:46:40,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-11-06 23:46:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:40,799 INFO L225 Difference]: With dead ends: 646 [2020-11-06 23:46:40,800 INFO L226 Difference]: Without dead ends: 500 [2020-11-06 23:46:40,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-11-06 23:46:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-06 23:46:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 371. [2020-11-06 23:46:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-11-06 23:46:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 398 transitions. [2020-11-06 23:46:40,950 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 398 transitions. Word has length 175 [2020-11-06 23:46:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:40,951 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 398 transitions. [2020-11-06 23:46:40,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:46:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 398 transitions. [2020-11-06 23:46:40,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-06 23:46:40,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:40,954 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] [2020-11-06 23:46:40,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:46:40,955 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]=== [2020-11-06 23:46:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash -730704803, now seen corresponding path program 1 times [2020-11-06 23:46:40,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:40,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873337534] [2020-11-06 23:46:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:40,959 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,265 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:41,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:46:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-06 23:46:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-11-06 23:46:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:41,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873337534] [2020-11-06 23:46:41,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:41,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-06 23:46:41,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635343008] [2020-11-06 23:46:41,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 23:46:41,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:41,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 23:46:41,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-06 23:46:41,475 INFO L87 Difference]: Start difference. First operand 371 states and 398 transitions. Second operand 13 states. [2020-11-06 23:46:42,083 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:42,364 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:46:42,640 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:42,905 WARN L194 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:43,206 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:44,065 WARN L194 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:44,339 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:44,629 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:44,917 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:46:45,182 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:46,644 INFO L93 Difference]: Finished difference Result 759 states and 889 transitions. [2020-11-06 23:46:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:46:46,647 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 199 [2020-11-06 23:46:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:46,652 INFO L225 Difference]: With dead ends: 759 [2020-11-06 23:46:46,652 INFO L226 Difference]: Without dead ends: 503 [2020-11-06 23:46:46,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-11-06 23:46:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-11-06 23:46:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 377. [2020-11-06 23:46:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-11-06 23:46:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 404 transitions. [2020-11-06 23:46:46,802 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 404 transitions. Word has length 199 [2020-11-06 23:46:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:46,803 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 404 transitions. [2020-11-06 23:46:46,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 23:46:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 404 transitions. [2020-11-06 23:46:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-06 23:46:46,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:46,807 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] [2020-11-06 23:46:46,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:46:46,807 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]=== [2020-11-06 23:46:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:46,808 INFO L82 PathProgramCache]: Analyzing trace with hash 243165373, now seen corresponding path program 1 times [2020-11-06 23:46:46,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:46,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869968000] [2020-11-06 23:46:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:46,812 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,135 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:46:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:46:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-06 23:46:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-11-06 23:46:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:47,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869968000] [2020-11-06 23:46:47,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:47,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:46:47,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096673508] [2020-11-06 23:46:47,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:46:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:46:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:46:47,327 INFO L87 Difference]: Start difference. First operand 377 states and 404 transitions. Second operand 10 states. [2020-11-06 23:46:47,859 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:49,397 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:49,701 WARN L194 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:50,015 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:50,290 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:50,558 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:50,832 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:51,100 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:51,472 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:53,103 INFO L93 Difference]: Finished difference Result 1089 states and 1308 transitions. [2020-11-06 23:46:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:46:53,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-11-06 23:46:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:53,111 INFO L225 Difference]: With dead ends: 1089 [2020-11-06 23:46:53,111 INFO L226 Difference]: Without dead ends: 827 [2020-11-06 23:46:53,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:46:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-11-06 23:46:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 601. [2020-11-06 23:46:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-11-06 23:46:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 650 transitions. [2020-11-06 23:46:53,487 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 650 transitions. Word has length 199 [2020-11-06 23:46:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:46:53,487 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 650 transitions. [2020-11-06 23:46:53,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:46:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 650 transitions. [2020-11-06 23:46:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-06 23:46:53,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:46:53,490 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] [2020-11-06 23:46:53,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:46:53,491 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]=== [2020-11-06 23:46:53,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:46:53,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2005539551, now seen corresponding path program 1 times [2020-11-06 23:46:53,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:46:53,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583919576] [2020-11-06 23:46:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:46:53,501 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:46:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,852 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:46:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:46:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:46:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:46:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:46:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:46:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:46:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:46:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:46:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:46:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:46:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:46:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-06 23:46:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:53,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-06 23:46:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:46:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:46:54,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583919576] [2020-11-06 23:46:54,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:46:54,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:46:54,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087619753] [2020-11-06 23:46:54,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:46:54,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:46:54,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:46:54,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:46:54,033 INFO L87 Difference]: Start difference. First operand 601 states and 650 transitions. Second operand 11 states. [2020-11-06 23:46:54,559 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:56,095 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:56,358 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:46:56,656 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:56,932 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:57,222 WARN L194 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:57,532 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:46:57,805 WARN L194 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:46:58,135 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:46:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:46:59,870 INFO L93 Difference]: Finished difference Result 963 states and 1185 transitions. [2020-11-06 23:46:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-06 23:46:59,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-11-06 23:46:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:46:59,878 INFO L225 Difference]: With dead ends: 963 [2020-11-06 23:46:59,879 INFO L226 Difference]: Without dead ends: 959 [2020-11-06 23:46:59,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-11-06 23:46:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-11-06 23:47:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 601. [2020-11-06 23:47:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-11-06 23:47:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 649 transitions. [2020-11-06 23:47:00,208 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 649 transitions. Word has length 204 [2020-11-06 23:47:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:00,209 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 649 transitions. [2020-11-06 23:47:00,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:47:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 649 transitions. [2020-11-06 23:47:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:00,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:00,212 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] [2020-11-06 23:47:00,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:47:00,213 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]=== [2020-11-06 23:47:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:00,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2098079821, now seen corresponding path program 1 times [2020-11-06 23:47:00,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:00,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012346212] [2020-11-06 23:47:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:00,217 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,530 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:00,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012346212] [2020-11-06 23:47:00,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:00,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:47:00,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447043268] [2020-11-06 23:47:00,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:47:00,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:00,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:47:00,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:47:00,731 INFO L87 Difference]: Start difference. First operand 601 states and 649 transitions. Second operand 11 states. [2020-11-06 23:47:02,026 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:47:02,308 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:47:02,603 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:47:02,880 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:03,176 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:47:03,445 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:47:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:05,317 INFO L93 Difference]: Finished difference Result 1455 states and 1748 transitions. [2020-11-06 23:47:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:47:05,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 205 [2020-11-06 23:47:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:05,325 INFO L225 Difference]: With dead ends: 1455 [2020-11-06 23:47:05,325 INFO L226 Difference]: Without dead ends: 969 [2020-11-06 23:47:05,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:47:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-11-06 23:47:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 617. [2020-11-06 23:47:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-11-06 23:47:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 665 transitions. [2020-11-06 23:47:05,641 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 665 transitions. Word has length 205 [2020-11-06 23:47:05,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:05,642 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 665 transitions. [2020-11-06 23:47:05,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:47:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 665 transitions. [2020-11-06 23:47:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:47:05,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:05,645 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] [2020-11-06 23:47:05,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:47:05,646 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]=== [2020-11-06 23:47:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1532790064, now seen corresponding path program 1 times [2020-11-06 23:47:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:05,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173955599] [2020-11-06 23:47:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:05,650 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:05,961 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:47:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:47:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:47:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:47:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:47:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:47:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:47:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:47:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:47:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:47:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:47:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:47:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-11-06 23:47:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-11-06 23:47:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:47:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:47:06,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173955599] [2020-11-06 23:47:06,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:47:06,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:47:06,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931400883] [2020-11-06 23:47:06,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:47:06,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:47:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:47:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:47:06,159 INFO L87 Difference]: Start difference. First operand 617 states and 665 transitions. Second operand 8 states. [2020-11-06 23:47:06,753 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:07,387 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:47:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:47:11,350 INFO L93 Difference]: Finished difference Result 2139 states and 2683 transitions. [2020-11-06 23:47:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-06 23:47:11,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2020-11-06 23:47:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:47:11,362 INFO L225 Difference]: With dead ends: 2139 [2020-11-06 23:47:11,362 INFO L226 Difference]: Without dead ends: 1637 [2020-11-06 23:47:11,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-11-06 23:47:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-11-06 23:47:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1059. [2020-11-06 23:47:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1059 states. [2020-11-06 23:47:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1181 transitions. [2020-11-06 23:47:11,902 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1181 transitions. Word has length 205 [2020-11-06 23:47:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:47:11,903 INFO L481 AbstractCegarLoop]: Abstraction has 1059 states and 1181 transitions. [2020-11-06 23:47:11,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:47:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1181 transitions. [2020-11-06 23:47:11,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-06 23:47:11,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:47:11,906 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, 1, 1, 1] [2020-11-06 23:47:11,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:47:11,907 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]=== [2020-11-06 23:47:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:47:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash 50185591, now seen corresponding path program 1 times [2020-11-06 23:47:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:47:11,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451263031] [2020-11-06 23:47:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:47:11,933 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:47:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:12,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:47:12,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:47:12,383 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:47:12,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:47:12,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:47:12,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:47:12 BoogieIcfgContainer [2020-11-06 23:47:12,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:47:12,425 INFO L168 Benchmark]: Toolchain (without parser) took 47701.75 ms. Allocated memory was 161.5 MB in the beginning and 798.0 MB in the end (delta: 636.5 MB). Free memory was 136.4 MB in the beginning and 713.1 MB in the end (delta: -576.6 MB). Peak memory consumption was 60.5 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:12,426 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:47:12,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.97 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 114.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:12,428 INFO L168 Benchmark]: Boogie Preprocessor took 148.33 ms. Allocated memory is still 161.5 MB. Free memory was 114.1 MB in the beginning and 110.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:12,428 INFO L168 Benchmark]: RCFGBuilder took 1611.08 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 110.0 MB in the beginning and 132.7 MB in the end (delta: -22.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:12,429 INFO L168 Benchmark]: TraceAbstraction took 45348.01 ms. Allocated memory was 202.4 MB in the beginning and 798.0 MB in the end (delta: 595.6 MB). Free memory was 132.2 MB in the beginning and 713.1 MB in the end (delta: -580.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:47:12,432 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 161.5 MB. Free memory is still 134.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 579.97 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 114.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 148.33 ms. Allocated memory is still 161.5 MB. Free memory was 114.1 MB in the beginning and 110.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1611.08 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 110.0 MB in the beginning and 132.7 MB in the end (delta: -22.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45348.01 ms. Allocated memory was 202.4 MB in the beginning and 798.0 MB in the end (delta: 595.6 MB). Free memory was 132.2 MB in the beginning and 713.1 MB in the end (delta: -580.9 MB). Peak memory consumption was 14.7 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: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L260] int retValue_acc ; [L261] int tmp ; [L265] FCALL select_helpers() [L266] FCALL select_features() [L267] CALL, EXPR valid_product() [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); [L267] RET, EXPR valid_product() [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) [L271] FCALL setup() [L272] CALL runTest() [L251] CALL test() [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 [L329] COND TRUE 1 [L331] COND TRUE splverifierCounter < 4 [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) [L341] CALL waterRise() [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 [L341] RET waterRise() [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) [L351] CALL changeMethaneLevel() [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 [L351] RET changeMethaneLevel() [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L361] CALL startSystem() [L597] systemActive = 1 [L361] RET startSystem() [L374] CALL timeShift() [L404] COND FALSE !(\read(pumpRunning)) [L411] COND TRUE \read(systemActive) [L413] CALL processEnvironment() [L459] int tmp ; [L462] COND FALSE !(\read(pumpRunning)) [L477] CALL processEnvironment__wrappee__highWaterSensor() [L433] int tmp ; [L436] COND TRUE ! pumpRunning [L438] CALL, EXPR isHighWaterLevel() [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L562] CALL, EXPR isHighWaterSensorDry() [L158] int retValue_acc ; [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); [L562] RET, EXPR isHighWaterSensorDry() [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); [L438] RET, EXPR isHighWaterLevel() [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L442] CALL activatePump() [L487] pumpRunning = 1 [L442] RET activatePump() [L477] RET processEnvironment__wrappee__highWaterSensor() [L413] RET processEnvironment() [L419] CALL __utac_acc__Specification1_spec__1() [L46] int tmp ; [L47] int tmp___0 ; [L51] CALL, EXPR isMethaneLevelCritical() [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L55] CALL, EXPR isPumpRunning() [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] return (retValue_acc); [L55] RET, EXPR isPumpRunning() [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) [L59] CALL __automaton_fail() [L390] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product50.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 654 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2325 SDtfs, 5347 SDslu, 4490 SDs, 0 SdLazy, 9267 SolverSat, 1579 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1059occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1903 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...