/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:44:41,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:44:41,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:44:41,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:44:41,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:44:41,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:44:41,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:44:41,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:44:41,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:44:41,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:44:41,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:44:41,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:44:41,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:44:41,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:44:41,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:44:41,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:44:41,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:44:41,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:44:41,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:44:41,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:44:41,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:44:41,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:44:41,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:44:41,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:44:41,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:44:41,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:44:41,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:44:41,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:44:41,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:44:41,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:44:41,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:44:41,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:44:41,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:44:41,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:44:41,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:44:41,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:44:41,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:44:41,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:44:41,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:44:41,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:44:41,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:44:41,593 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 23:44:41,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:44:41,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:44:41,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:44:41,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:44:41,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:44:41,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:44:41,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:44:41,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:44:41,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:44:41,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:44:41,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:44:41,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:44:41,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:44:41,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:44:41,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:44:41,622 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:44:41,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:44:41,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:44:41,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:44:41,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:44:41,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:44:41,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:44:41,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:44:42,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:44:42,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:44:42,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:44:42,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:44:42,064 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:44:42,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-11-06 23:44:42,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767d1484b/5724364102eb4e2c9775de8da5599f03/FLAGe031fb4d6 [2020-11-06 23:44:42,838 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:44:42,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-11-06 23:44:42,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767d1484b/5724364102eb4e2c9775de8da5599f03/FLAGe031fb4d6 [2020-11-06 23:44:43,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767d1484b/5724364102eb4e2c9775de8da5599f03 [2020-11-06 23:44:43,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:44:43,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:44:43,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:43,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:44:43,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:44:43,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673a6309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43, skipping insertion in model container [2020-11-06 23:44:43,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:44:43,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:44:43,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:43,542 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:44:43,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:43,706 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:44:43,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43 WrapperNode [2020-11-06 23:44:43,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:43,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:44:43,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:44:43,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:44:43,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (1/1) ... [2020-11-06 23:44:43,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:44:43,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:44:43,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:44:43,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:44:43,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (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 23:44:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:44:43,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:44:43,928 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:44:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:44:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:43,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:44:43,930 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:44:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:44:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:44:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:44:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:44:43,931 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:44:43,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:44:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:44:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:44:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-06 23:44:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:43,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:44:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:44:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:44:43,934 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:44:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:44:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:44:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:44:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:44:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:44:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:44:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:44:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:44:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:44:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:44:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:44:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:44:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:44:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:44:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:44:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:44:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:44:45,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:44:45,408 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:44:45,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:45 BoogieIcfgContainer [2020-11-06 23:44:45,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:44:45,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:44:45,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:44:45,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:44:45,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:44:43" (1/3) ... [2020-11-06 23:44:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e66fc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:45, skipping insertion in model container [2020-11-06 23:44:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:43" (2/3) ... [2020-11-06 23:44:45,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e66fc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:45, skipping insertion in model container [2020-11-06 23:44:45,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:45" (3/3) ... [2020-11-06 23:44:45,428 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-11-06 23:44:45,444 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:44:45,449 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:44:45,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:44:45,498 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:44:45,499 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:44:45,499 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:44:45,499 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:44:45,499 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:44:45,499 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:44:45,500 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:44:45,500 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:44:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-11-06 23:44:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:44:45,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:45,567 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 23:44:45,568 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 23:44:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash 961635695, now seen corresponding path program 1 times [2020-11-06 23:44:45,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:45,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605983145] [2020-11-06 23:44:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:45,659 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,565 WARN L194 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:44:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:46,736 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 23:44:46,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605983145] [2020-11-06 23:44:46,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:46,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:44:46,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716469462] [2020-11-06 23:44:46,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:44:46,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:46,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:44:46,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:46,777 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2020-11-06 23:44:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:48,247 INFO L93 Difference]: Finished difference Result 438 states and 522 transitions. [2020-11-06 23:44:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:44:48,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:44:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:48,267 INFO L225 Difference]: With dead ends: 438 [2020-11-06 23:44:48,267 INFO L226 Difference]: Without dead ends: 277 [2020-11-06 23:44:48,272 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 23:44:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-11-06 23:44:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-11-06 23:44:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-11-06 23:44:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 255 transitions. [2020-11-06 23:44:48,423 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 255 transitions. Word has length 148 [2020-11-06 23:44:48,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:48,424 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 255 transitions. [2020-11-06 23:44:48,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:44:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 255 transitions. [2020-11-06 23:44:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:44:48,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:48,429 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 23:44:48,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:44:48,429 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 23:44:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash 571866584, now seen corresponding path program 1 times [2020-11-06 23:44:48,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:48,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340940013] [2020-11-06 23:44:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:48,435 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:48,912 WARN L194 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:44:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:44:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:49,069 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 23:44:49,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340940013] [2020-11-06 23:44:49,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:49,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:44:49,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647172103] [2020-11-06 23:44:49,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:44:49,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:44:49,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:44:49,075 INFO L87 Difference]: Start difference. First operand 237 states and 255 transitions. Second operand 4 states. [2020-11-06 23:44:49,989 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:44:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:51,055 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2020-11-06 23:44:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:44:51,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:44:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:51,060 INFO L225 Difference]: With dead ends: 348 [2020-11-06 23:44:51,061 INFO L226 Difference]: Without dead ends: 260 [2020-11-06 23:44:51,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 23:44:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-11-06 23:44:51,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 227. [2020-11-06 23:44:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-06 23:44:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2020-11-06 23:44:51,185 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 149 [2020-11-06 23:44:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:51,186 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2020-11-06 23:44:51,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:44:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2020-11-06 23:44:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 23:44:51,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:51,189 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 23:44:51,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:44:51,190 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 23:44:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1932278497, now seen corresponding path program 1 times [2020-11-06 23:44:51,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:51,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607486976] [2020-11-06 23:44:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:51,195 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,679 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:44:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-06 23:44:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:44:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:51,900 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 23:44:51,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607486976] [2020-11-06 23:44:51,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:51,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:44:51,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946470819] [2020-11-06 23:44:51,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:44:51,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:51,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:44:51,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:44:51,907 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand 10 states. [2020-11-06 23:44:52,663 WARN L194 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:53,171 WARN L194 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:44:53,593 WARN L194 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:44:54,017 WARN L194 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:54,430 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:44:54,839 WARN L194 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:44:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:56,536 INFO L93 Difference]: Finished difference Result 394 states and 451 transitions. [2020-11-06 23:44:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 23:44:56,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-11-06 23:44:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:56,540 INFO L225 Difference]: With dead ends: 394 [2020-11-06 23:44:56,541 INFO L226 Difference]: Without dead ends: 282 [2020-11-06 23:44:56,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-11-06 23:44:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-06 23:44:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2020-11-06 23:44:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-11-06 23:44:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 241 transitions. [2020-11-06 23:44:56,623 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 241 transitions. Word has length 162 [2020-11-06 23:44:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:56,624 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 241 transitions. [2020-11-06 23:44:56,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:44:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 241 transitions. [2020-11-06 23:44:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-11-06 23:44:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:56,627 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] [2020-11-06 23:44:56,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:44:56,628 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 23:44:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash -959869354, now seen corresponding path program 1 times [2020-11-06 23:44:56,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:56,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310792600] [2020-11-06 23:44:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:56,633 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,101 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:44:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:44:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:44:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-06 23:44:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-06 23:44:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:57,244 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 23:44:57,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310792600] [2020-11-06 23:44:57,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:57,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 23:44:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110368285] [2020-11-06 23:44:57,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 23:44:57,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 23:44:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-06 23:44:57,247 INFO L87 Difference]: Start difference. First operand 227 states and 241 transitions. Second operand 7 states. [2020-11-06 23:44:57,940 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:44:59,979 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:00,833 INFO L93 Difference]: Finished difference Result 567 states and 670 transitions. [2020-11-06 23:45:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 23:45:00,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-11-06 23:45:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:00,843 INFO L225 Difference]: With dead ends: 567 [2020-11-06 23:45:00,843 INFO L226 Difference]: Without dead ends: 455 [2020-11-06 23:45:00,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:45:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-11-06 23:45:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 326. [2020-11-06 23:45:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-11-06 23:45:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2020-11-06 23:45:01,001 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 350 transitions. Word has length 170 [2020-11-06 23:45:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 350 transitions. [2020-11-06 23:45:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 23:45:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 350 transitions. [2020-11-06 23:45:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-06 23:45:01,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:01,005 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] [2020-11-06 23:45:01,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:45:01,006 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 23:45:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash 963333066, now seen corresponding path program 1 times [2020-11-06 23:45:01,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:01,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030703243] [2020-11-06 23:45:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:01,010 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,449 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:45:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:45:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-06 23:45:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-06 23:45:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,683 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 23:45:01,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030703243] [2020-11-06 23:45:01,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:01,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:01,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918456928] [2020-11-06 23:45:01,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:01,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:01,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:01,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:01,686 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand 10 states. [2020-11-06 23:45:02,429 WARN L194 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:03,713 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:04,098 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:04,495 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:04,879 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:05,341 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-06 23:45:05,728 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:07,944 INFO L93 Difference]: Finished difference Result 927 states and 1135 transitions. [2020-11-06 23:45:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 23:45:07,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-11-06 23:45:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:07,953 INFO L225 Difference]: With dead ends: 927 [2020-11-06 23:45:07,953 INFO L226 Difference]: Without dead ends: 716 [2020-11-06 23:45:07,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:45:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-11-06 23:45:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 503. [2020-11-06 23:45:08,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-11-06 23:45:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 552 transitions. [2020-11-06 23:45:08,234 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 552 transitions. Word has length 194 [2020-11-06 23:45:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:08,235 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 552 transitions. [2020-11-06 23:45:08,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 552 transitions. [2020-11-06 23:45:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-06 23:45:08,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:08,239 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] [2020-11-06 23:45:08,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:45:08,239 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 23:45:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash 754984295, now seen corresponding path program 1 times [2020-11-06 23:45:08,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:08,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048132255] [2020-11-06 23:45:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:08,244 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,643 WARN L194 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:45:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:45:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-06 23:45:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-06 23:45:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:08,798 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 23:45:08,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048132255] [2020-11-06 23:45:08,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:08,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:08,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239151229] [2020-11-06 23:45:08,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:08,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:08,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:08,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:08,801 INFO L87 Difference]: Start difference. First operand 503 states and 552 transitions. Second operand 10 states. [2020-11-06 23:45:09,608 WARN L194 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:11,449 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:11,826 WARN L194 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:12,232 WARN L194 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:12,602 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:12,970 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:13,325 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:13,693 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:14,196 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:16,020 INFO L93 Difference]: Finished difference Result 1601 states and 1975 transitions. [2020-11-06 23:45:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:45:16,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-11-06 23:45:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:16,033 INFO L225 Difference]: With dead ends: 1601 [2020-11-06 23:45:16,034 INFO L226 Difference]: Without dead ends: 1213 [2020-11-06 23:45:16,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:45:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-11-06 23:45:16,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 829. [2020-11-06 23:45:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-11-06 23:45:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 918 transitions. [2020-11-06 23:45:16,455 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 918 transitions. Word has length 194 [2020-11-06 23:45:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:16,456 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 918 transitions. [2020-11-06 23:45:16,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 918 transitions. [2020-11-06 23:45:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-06 23:45:16,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:16,468 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 23:45:16,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:45:16,469 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 23:45:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash -712463800, now seen corresponding path program 1 times [2020-11-06 23:45:16,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:16,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707065643] [2020-11-06 23:45:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:16,476 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,963 WARN L194 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:16,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-11-06 23:45:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-11-06 23:45:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:17,152 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 23:45:17,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707065643] [2020-11-06 23:45:17,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:17,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:45:17,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849157293] [2020-11-06 23:45:17,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:45:17,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:17,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:45:17,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:45:17,155 INFO L87 Difference]: Start difference. First operand 829 states and 918 transitions. Second operand 11 states. [2020-11-06 23:45:17,854 WARN L194 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:19,818 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:20,250 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:20,595 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:20,977 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:21,391 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:21,815 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:22,152 WARN L194 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:22,557 WARN L194 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:24,643 INFO L93 Difference]: Finished difference Result 1459 states and 1834 transitions. [2020-11-06 23:45:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-06 23:45:24,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-11-06 23:45:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:24,655 INFO L225 Difference]: With dead ends: 1459 [2020-11-06 23:45:24,655 INFO L226 Difference]: Without dead ends: 1455 [2020-11-06 23:45:24,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-11-06 23:45:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-11-06 23:45:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 829. [2020-11-06 23:45:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-11-06 23:45:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 916 transitions. [2020-11-06 23:45:25,027 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 916 transitions. Word has length 199 [2020-11-06 23:45:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:25,027 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 916 transitions. [2020-11-06 23:45:25,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:45:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 916 transitions. [2020-11-06 23:45:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:45:25,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:25,032 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] [2020-11-06 23:45:25,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:45:25,032 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 23:45:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1672080698, now seen corresponding path program 1 times [2020-11-06 23:45:25,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:25,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040964088] [2020-11-06 23:45:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:25,036 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,421 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:45:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,648 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 23:45:25,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040964088] [2020-11-06 23:45:25,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:25,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:45:25,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999895910] [2020-11-06 23:45:25,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:45:25,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:45:25,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:45:25,652 INFO L87 Difference]: Start difference. First operand 829 states and 916 transitions. Second operand 11 states. [2020-11-06 23:45:27,234 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:27,616 WARN L194 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:28,017 WARN L194 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:45:28,407 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:28,791 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:29,144 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:31,310 INFO L93 Difference]: Finished difference Result 2191 states and 2695 transitions. [2020-11-06 23:45:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:45:31,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-11-06 23:45:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:31,320 INFO L225 Difference]: With dead ends: 2191 [2020-11-06 23:45:31,321 INFO L226 Difference]: Without dead ends: 1477 [2020-11-06 23:45:31,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:45:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-11-06 23:45:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 861. [2020-11-06 23:45:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-11-06 23:45:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 948 transitions. [2020-11-06 23:45:31,716 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 948 transitions. Word has length 200 [2020-11-06 23:45:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:31,717 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 948 transitions. [2020-11-06 23:45:31,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:45:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 948 transitions. [2020-11-06 23:45:31,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:45:31,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:31,721 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] [2020-11-06 23:45:31,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:45:31,721 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 23:45:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash 532286874, now seen corresponding path program 1 times [2020-11-06 23:45:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:31,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934615192] [2020-11-06 23:45:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:31,725 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,098 WARN L194 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:45:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:32,357 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 23:45:32,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934615192] [2020-11-06 23:45:32,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:32,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-06 23:45:32,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632795644] [2020-11-06 23:45:32,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 23:45:32,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 23:45:32,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:45:32,360 INFO L87 Difference]: Start difference. First operand 861 states and 948 transitions. Second operand 14 states. [2020-11-06 23:45:33,161 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:33,564 WARN L194 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:33,956 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:34,356 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:34,728 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:35,787 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:36,150 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:36,522 WARN L194 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:36,924 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:37,286 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:39,354 INFO L93 Difference]: Finished difference Result 1863 states and 2256 transitions. [2020-11-06 23:45:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:45:39,355 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2020-11-06 23:45:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:39,363 INFO L225 Difference]: With dead ends: 1863 [2020-11-06 23:45:39,363 INFO L226 Difference]: Without dead ends: 1117 [2020-11-06 23:45:39,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-11-06 23:45:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-11-06 23:45:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 703. [2020-11-06 23:45:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-11-06 23:45:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 756 transitions. [2020-11-06 23:45:39,798 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 756 transitions. Word has length 200 [2020-11-06 23:45:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:39,798 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 756 transitions. [2020-11-06 23:45:39,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 23:45:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 756 transitions. [2020-11-06 23:45:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:45:39,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:39,802 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 23:45:39,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:45:39,802 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 23:45:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash -387097581, now seen corresponding path program 1 times [2020-11-06 23:45:39,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:39,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528088099] [2020-11-06 23:45:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:39,806 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:39,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:39,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:40,174 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:45:40,174 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:45:40,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-06 23:45:40,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:45:40 BoogieIcfgContainer [2020-11-06 23:45:40,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:45:40,204 INFO L168 Benchmark]: Toolchain (without parser) took 57103.06 ms. Allocated memory was 151.0 MB in the beginning and 685.8 MB in the end (delta: 534.8 MB). Free memory was 126.5 MB in the beginning and 494.5 MB in the end (delta: -368.0 MB). Peak memory consumption was 167.1 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:40,205 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:45:40,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 105.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:40,206 INFO L168 Benchmark]: Boogie Preprocessor took 141.14 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 101.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:40,207 INFO L168 Benchmark]: RCFGBuilder took 1560.09 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 101.2 MB in the beginning and 138.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:40,208 INFO L168 Benchmark]: TraceAbstraction took 54785.52 ms. Allocated memory was 189.8 MB in the beginning and 685.8 MB in the end (delta: 496.0 MB). Free memory was 138.2 MB in the beginning and 494.5 MB in the end (delta: -356.3 MB). Peak memory consumption was 139.7 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:40,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 598.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 105.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 141.14 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 101.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1560.09 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 101.2 MB in the beginning and 138.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 54785.52 ms. Allocated memory was 189.8 MB in the beginning and 685.8 MB in the end (delta: 496.0 MB). Free memory was 138.2 MB in the beginning and 494.5 MB in the end (delta: -356.3 MB). Peak memory consumption was 139.7 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: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 [L631] COND TRUE 1 [L633] COND TRUE splverifierCounter < 4 [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) [L643] CALL waterRise() [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 [L643] RET waterRise() [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) [L653] CALL changeMethaneLevel() [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 [L653] RET changeMethaneLevel() [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L663] CALL startSystem() [L847] systemActive = 1 [L663] RET startSystem() [L676] CALL timeShift() [L699] COND FALSE !(\read(pumpRunning)) [L706] COND TRUE \read(systemActive) [L708] CALL processEnvironment() [L728] int tmp ; [L731] COND TRUE ! pumpRunning [L733] CALL, EXPR isHighWaterLevel() [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L831] CALL, EXPR isHighWaterSensorDry() [L606] int retValue_acc ; [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); [L831] RET, EXPR isHighWaterSensorDry() [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); [L733] RET, EXPR isHighWaterLevel() [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L737] CALL activatePump() [L756] pumpRunning = 1 [L737] RET activatePump() [L708] RET processEnvironment() [L714] CALL __utac_acc__Specification1_spec__1() [L853] int tmp ; [L854] int tmp___0 ; [L858] CALL, EXPR isMethaneLevelCritical() [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L862] CALL, EXPR isPumpRunning() [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); [L862] RET, EXPR isPumpRunning() [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) [L866] CALL __automaton_fail() [L516] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product34.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 623 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1976 SDtfs, 4428 SDslu, 4733 SDs, 0 SdLazy, 8476 SolverSat, 1222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2510 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...