/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:54:28,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:54:28,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:54:28,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:54:28,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:54:28,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:54:28,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:54:28,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:54:28,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:54:28,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:54:28,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:54:28,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:54:28,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:54:28,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:54:28,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:54:28,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:54:28,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:54:28,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:54:28,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:54:28,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:54:28,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:54:28,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:54:28,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:54:28,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:54:28,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:54:28,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:54:28,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:54:28,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:54:28,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:54:28,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:54:28,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:54:28,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:54:28,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:54:28,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:54:28,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:54:28,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:54:28,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:54:28,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:54:28,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:54:28,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:54:28,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:54:28,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:54:28,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:54:28,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:54:28,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:54:28,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:54:28,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:54:28,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:54:28,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:54:28,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:54:28,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:54:28,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:54:28,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:54:28,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:54:28,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:54:28,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:54:28,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:54:28,885 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:54:28,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:54:28,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:54:28,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:28,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:54:28,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:54:28,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:54:28,887 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:54:29,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:54:29,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:54:29,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:54:29,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:54:29,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:54:29,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-10-23 19:54:29,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e705529e/c434f1b7f6a845aab9f15750c73c0747/FLAGc25d8f2e0 [2020-10-23 19:54:30,054 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:54:30,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-10-23 19:54:30,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e705529e/c434f1b7f6a845aab9f15750c73c0747/FLAGc25d8f2e0 [2020-10-23 19:54:30,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e705529e/c434f1b7f6a845aab9f15750c73c0747 [2020-10-23 19:54:30,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:54:30,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:54:30,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:30,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:54:30,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:54:30,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:30" (1/1) ... [2020-10-23 19:54:30,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dab0d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:30, skipping insertion in model container [2020-10-23 19:54:30,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:54:30" (1/1) ... [2020-10-23 19:54:30,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:54:30,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:54:30,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:30,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:54:31,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:54:31,100 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:54:31,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31 WrapperNode [2020-10-23 19:54:31,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:54:31,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:54:31,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:54:31,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:54:31,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... [2020-10-23 19:54:31,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:54:31,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:54:31,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:54:31,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:54:31,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:54:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:54:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:54:31,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:54:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:31,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:54:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:54:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:54:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:54:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:54:31,277 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:54:31,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:54:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:54:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:54:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:54:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:54:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:54:31,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:54:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:54:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:54:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:54:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:54:31,281 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:54:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:54:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:54:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:54:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:54:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:54:31,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:54:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:54:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:54:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:54:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:54:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:54:31,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:54:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:54:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:54:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:54:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:54:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:54:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:54:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:54:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:54:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:54:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:54:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:54:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:54:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:54:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:54:31,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:54:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:54:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:54:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:54:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:54:31,289 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:54:31,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:54:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:54:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:54:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:54:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:54:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:54:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:54:31,314 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:54:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:54:32,558 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:54:32,558 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:54:32,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:32 BoogieIcfgContainer [2020-10-23 19:54:32,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:54:32,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:54:32,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:54:32,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:54:32,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:54:30" (1/3) ... [2020-10-23 19:54:32,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e966052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:32, skipping insertion in model container [2020-10-23 19:54:32,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:54:31" (2/3) ... [2020-10-23 19:54:32,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e966052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:54:32, skipping insertion in model container [2020-10-23 19:54:32,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:54:32" (3/3) ... [2020-10-23 19:54:32,571 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-10-23 19:54:32,584 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:54:32,590 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:54:32,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:54:32,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:54:32,631 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:54:32,631 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:54:32,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:54:32,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:54:32,631 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:54:32,631 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:54:32,632 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:54:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-10-23 19:54:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:54:32,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:32,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:32,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash -760914314, now seen corresponding path program 1 times [2020-10-23 19:54:32,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:32,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704266938] [2020-10-23 19:54:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:32,776 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,543 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:33,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:54:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:33,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704266938] [2020-10-23 19:54:33,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:33,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:54:33,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573660320] [2020-10-23 19:54:33,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:54:33,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:33,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:54:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:33,762 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 4 states. [2020-10-23 19:54:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:35,980 INFO L93 Difference]: Finished difference Result 579 states and 688 transitions. [2020-10-23 19:54:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:54:35,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:54:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:36,007 INFO L225 Difference]: With dead ends: 579 [2020-10-23 19:54:36,007 INFO L226 Difference]: Without dead ends: 360 [2020-10-23 19:54:36,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:54:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-23 19:54:36,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 306. [2020-10-23 19:54:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-23 19:54:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 336 transitions. [2020-10-23 19:54:36,250 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 336 transitions. Word has length 154 [2020-10-23 19:54:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:36,255 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 336 transitions. [2020-10-23 19:54:36,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:54:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 336 transitions. [2020-10-23 19:54:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:54:36,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:36,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:36,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:54:36,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1284089248, now seen corresponding path program 1 times [2020-10-23 19:54:36,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437159436] [2020-10-23 19:54:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:36,287 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,797 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:54:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:54:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:36,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437159436] [2020-10-23 19:54:36,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:36,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:54:36,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102629128] [2020-10-23 19:54:36,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:54:36,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:36,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:54:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:54:36,929 INFO L87 Difference]: Start difference. First operand 306 states and 336 transitions. Second operand 5 states. [2020-10-23 19:54:37,924 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:39,753 INFO L93 Difference]: Finished difference Result 495 states and 567 transitions. [2020-10-23 19:54:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:54:39,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:54:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:39,770 INFO L225 Difference]: With dead ends: 495 [2020-10-23 19:54:39,771 INFO L226 Difference]: Without dead ends: 349 [2020-10-23 19:54:39,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:54:39,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-23 19:54:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 296. [2020-10-23 19:54:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-23 19:54:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 323 transitions. [2020-10-23 19:54:39,943 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 323 transitions. Word has length 155 [2020-10-23 19:54:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:39,946 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 323 transitions. [2020-10-23 19:54:39,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:54:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 323 transitions. [2020-10-23 19:54:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 19:54:39,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:39,950 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] [2020-10-23 19:54:39,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:54:39,951 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1495259370, now seen corresponding path program 1 times [2020-10-23 19:54:39,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505033690] [2020-10-23 19:54:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:39,959 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,572 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:54:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:54:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:54:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:40,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505033690] [2020-10-23 19:54:40,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:40,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:40,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576292095] [2020-10-23 19:54:40,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:40,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:40,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:40,825 INFO L87 Difference]: Start difference. First operand 296 states and 323 transitions. Second operand 11 states. [2020-10-23 19:54:41,547 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:42,081 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:54:42,505 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:54:42,932 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:43,347 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:43,789 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:45,079 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:48,767 INFO L93 Difference]: Finished difference Result 824 states and 972 transitions. [2020-10-23 19:54:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:54:48,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-23 19:54:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:48,780 INFO L225 Difference]: With dead ends: 824 [2020-10-23 19:54:48,780 INFO L226 Difference]: Without dead ends: 648 [2020-10-23 19:54:48,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:54:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-23 19:54:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 535. [2020-10-23 19:54:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-23 19:54:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 604 transitions. [2020-10-23 19:54:49,031 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 604 transitions. Word has length 168 [2020-10-23 19:54:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:49,032 INFO L481 AbstractCegarLoop]: Abstraction has 535 states and 604 transitions. [2020-10-23 19:54:49,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:54:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 604 transitions. [2020-10-23 19:54:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:54:49,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:49,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:49,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:54:49,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash 711771480, now seen corresponding path program 1 times [2020-10-23 19:54:49,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:49,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760792795] [2020-10-23 19:54:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:49,041 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,594 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:54:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:54:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:54:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:49,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760792795] [2020-10-23 19:54:49,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:49,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:54:49,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984709197] [2020-10-23 19:54:49,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:54:49,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:49,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:54:49,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:54:49,850 INFO L87 Difference]: Start difference. First operand 535 states and 604 transitions. Second operand 10 states. [2020-10-23 19:54:50,540 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:52,122 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:52,551 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:53,101 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:54:53,547 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:54,009 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:54,578 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:54:55,057 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:54:55,936 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:54:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:54:58,214 INFO L93 Difference]: Finished difference Result 1500 states and 1822 transitions. [2020-10-23 19:54:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:54:58,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:54:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:54:58,225 INFO L225 Difference]: With dead ends: 1500 [2020-10-23 19:54:58,225 INFO L226 Difference]: Without dead ends: 1085 [2020-10-23 19:54:58,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:54:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-10-23 19:54:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 901. [2020-10-23 19:54:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-23 19:54:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1031 transitions. [2020-10-23 19:54:58,725 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1031 transitions. Word has length 173 [2020-10-23 19:54:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:54:58,726 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1031 transitions. [2020-10-23 19:54:58,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:54:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1031 transitions. [2020-10-23 19:54:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:54:58,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:54:58,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:54:58,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:54:58,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:54:58,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:54:58,733 INFO L82 PathProgramCache]: Analyzing trace with hash -303706467, now seen corresponding path program 1 times [2020-10-23 19:54:58,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:54:58,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262958443] [2020-10-23 19:54:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:54:58,737 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:54:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,186 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:54:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:54:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:54:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:54:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:54:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:54:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:54:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:54:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:54:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:54:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:54:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:54:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:54:59,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262958443] [2020-10-23 19:54:59,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:54:59,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:54:59,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128733309] [2020-10-23 19:54:59,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:54:59,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:54:59,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:54:59,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:54:59,390 INFO L87 Difference]: Start difference. First operand 901 states and 1031 transitions. Second operand 11 states. [2020-10-23 19:55:00,105 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:01,803 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:02,199 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:02,621 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:03,060 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:55:03,458 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:04,671 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:05,043 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:05,526 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:07,663 INFO L93 Difference]: Finished difference Result 2311 states and 2884 transitions. [2020-10-23 19:55:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 19:55:07,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:55:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:07,676 INFO L225 Difference]: With dead ends: 2311 [2020-10-23 19:55:07,677 INFO L226 Difference]: Without dead ends: 1530 [2020-10-23 19:55:07,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:55:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-23 19:55:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1231. [2020-10-23 19:55:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-23 19:55:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1409 transitions. [2020-10-23 19:55:08,257 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1409 transitions. Word has length 178 [2020-10-23 19:55:08,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:08,257 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1409 transitions. [2020-10-23 19:55:08,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:55:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1409 transitions. [2020-10-23 19:55:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:55:08,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:08,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:08,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:55:08,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash -722641616, now seen corresponding path program 1 times [2020-10-23 19:55:08,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:08,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930643736] [2020-10-23 19:55:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:08,267 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,635 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:08,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:55:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:08,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930643736] [2020-10-23 19:55:08,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:08,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:55:08,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107285478] [2020-10-23 19:55:08,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:55:08,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:55:08,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:55:08,898 INFO L87 Difference]: Start difference. First operand 1231 states and 1409 transitions. Second operand 12 states. [2020-10-23 19:55:10,857 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:11,256 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:11,681 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:55:12,105 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:12,519 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:12,892 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:15,243 INFO L93 Difference]: Finished difference Result 2990 states and 3740 transitions. [2020-10-23 19:55:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:55:15,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 216 [2020-10-23 19:55:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:15,260 INFO L225 Difference]: With dead ends: 2990 [2020-10-23 19:55:15,260 INFO L226 Difference]: Without dead ends: 1879 [2020-10-23 19:55:15,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:55:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-23 19:55:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1269. [2020-10-23 19:55:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-10-23 19:55:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1449 transitions. [2020-10-23 19:55:15,794 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1449 transitions. Word has length 216 [2020-10-23 19:55:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:15,794 INFO L481 AbstractCegarLoop]: Abstraction has 1269 states and 1449 transitions. [2020-10-23 19:55:15,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:55:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1449 transitions. [2020-10-23 19:55:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:55:15,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:15,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:15,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:55:15,800 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1640134864, now seen corresponding path program 1 times [2020-10-23 19:55:15,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:15,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650449813] [2020-10-23 19:55:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:15,804 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,209 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:55:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:16,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650449813] [2020-10-23 19:55:16,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:16,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 19:55:16,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207615955] [2020-10-23 19:55:16,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 19:55:16,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:16,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 19:55:16,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:55:16,531 INFO L87 Difference]: Start difference. First operand 1269 states and 1449 transitions. Second operand 15 states. [2020-10-23 19:55:17,386 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:55:17,785 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:55:18,177 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:18,569 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:18,938 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:20,353 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:20,741 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:21,163 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:21,614 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:55:22,005 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:55:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:24,891 INFO L93 Difference]: Finished difference Result 3072 states and 3896 transitions. [2020-10-23 19:55:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:55:24,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2020-10-23 19:55:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:24,904 INFO L225 Difference]: With dead ends: 3072 [2020-10-23 19:55:24,904 INFO L226 Difference]: Without dead ends: 1923 [2020-10-23 19:55:24,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 19:55:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-23 19:55:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1293. [2020-10-23 19:55:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1293 states. [2020-10-23 19:55:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1473 transitions. [2020-10-23 19:55:25,595 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1473 transitions. Word has length 216 [2020-10-23 19:55:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:25,596 INFO L481 AbstractCegarLoop]: Abstraction has 1293 states and 1473 transitions. [2020-10-23 19:55:25,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 19:55:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1473 transitions. [2020-10-23 19:55:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:55:25,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:25,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:25,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:55:25,602 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash -742258445, now seen corresponding path program 1 times [2020-10-23 19:55:25,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:25,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26340016] [2020-10-23 19:55:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:25,607 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,016 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:26,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:55:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:55:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:55:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:55:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:55:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26340016] [2020-10-23 19:55:26,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:26,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:55:26,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645995264] [2020-10-23 19:55:26,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:55:26,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:26,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:55:26,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:55:26,266 INFO L87 Difference]: Start difference. First operand 1293 states and 1473 transitions. Second operand 9 states. [2020-10-23 19:55:26,932 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:27,739 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:34,502 INFO L93 Difference]: Finished difference Result 4701 states and 6020 transitions. [2020-10-23 19:55:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-23 19:55:34,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-10-23 19:55:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:34,525 INFO L225 Difference]: With dead ends: 4701 [2020-10-23 19:55:34,526 INFO L226 Difference]: Without dead ends: 3528 [2020-10-23 19:55:34,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 19:55:34,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2020-10-23 19:55:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 2525. [2020-10-23 19:55:35,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2525 states. [2020-10-23 19:55:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 2907 transitions. [2020-10-23 19:55:35,721 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 2907 transitions. Word has length 216 [2020-10-23 19:55:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:35,721 INFO L481 AbstractCegarLoop]: Abstraction has 2525 states and 2907 transitions. [2020-10-23 19:55:35,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:55:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 2907 transitions. [2020-10-23 19:55:35,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-23 19:55:35,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:35,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:35,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:55:35,727 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:35,727 INFO L82 PathProgramCache]: Analyzing trace with hash 280072173, now seen corresponding path program 1 times [2020-10-23 19:55:35,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:35,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331262109] [2020-10-23 19:55:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:35,731 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:55:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,098 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:55:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:55:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:55:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:55:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:55:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:55:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:55:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:55:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:55:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:55:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-23 19:55:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:55:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:55:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:55:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:55:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-23 19:55:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:55:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:55:36,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331262109] [2020-10-23 19:55:36,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:55:36,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:55:36,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632325275] [2020-10-23 19:55:36,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:55:36,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:55:36,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:55:36,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:55:36,292 INFO L87 Difference]: Start difference. First operand 2525 states and 2907 transitions. Second operand 9 states. [2020-10-23 19:55:37,009 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:55:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:55:43,070 INFO L93 Difference]: Finished difference Result 5720 states and 7444 transitions. [2020-10-23 19:55:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 19:55:43,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-10-23 19:55:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:55:43,111 INFO L225 Difference]: With dead ends: 5720 [2020-10-23 19:55:43,112 INFO L226 Difference]: Without dead ends: 5716 [2020-10-23 19:55:43,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 19:55:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2020-10-23 19:55:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 4080. [2020-10-23 19:55:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4080 states. [2020-10-23 19:55:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 4801 transitions. [2020-10-23 19:55:44,937 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 4801 transitions. Word has length 221 [2020-10-23 19:55:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:55:44,938 INFO L481 AbstractCegarLoop]: Abstraction has 4080 states and 4801 transitions. [2020-10-23 19:55:44,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:55:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 4801 transitions. [2020-10-23 19:55:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-23 19:55:44,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:55:44,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:55:44,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:55:44,955 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:55:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:55:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1294719173, now seen corresponding path program 1 times [2020-10-23 19:55:44,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:55:44,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047277943] [2020-10-23 19:55:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:55:45,444 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:45,629 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:46,019 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:46,154 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:46,524 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-23 19:55:46,650 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-23 19:55:47,025 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:47,164 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:47,509 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:47,627 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:47,964 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2020-10-23 19:55:48,078 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-23 19:55:48,383 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:48,493 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:48,818 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-23 19:55:49,007 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-23 19:55:49,376 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:49,513 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:49,867 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:49,979 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:50,361 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-23 19:55:50,499 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-23 19:55:50,795 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:50,902 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:51,244 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-23 19:55:51,356 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-23 19:55:51,685 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-10-23 19:55:51,797 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-23 19:55:52,509 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:53,253 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:54,061 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:54,836 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:55,608 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:56,294 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:56,983 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:55:57,653 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:55:57,657 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:55:58,374 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:55:59,115 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:55:59,796 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:56:00,476 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:56:01,171 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:56:01,857 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:56:02,541 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 178 [2020-10-23 19:56:03,249 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 179 [2020-10-23 19:56:03,252 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:03,979 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:04,754 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:56:05,476 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:06,143 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:06,797 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:07,476 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:08,147 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 180 [2020-10-23 19:56:08,820 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 179 [2020-10-23 19:56:08,823 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:09,486 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:10,242 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:10,937 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:11,634 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:12,330 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:13,019 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:13,712 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:14,398 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:14,401 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:15,122 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:15,788 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:16,467 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:17,137 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:17,140 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:17,796 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:18,456 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:56:19,124 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:56:19,782 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:19,785 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:20,528 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:21,205 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:21,877 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:22,557 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:22,560 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:23,222 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:23,896 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:56:24,573 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 180 [2020-10-23 19:56:25,249 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 179 [2020-10-23 19:56:25,253 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:26,001 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:26,691 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:27,376 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:28,060 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:28,753 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:29,452 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:30,151 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:30,852 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 182 [2020-10-23 19:56:30,855 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:31,599 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:32,291 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:32,982 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:33,669 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 182 [2020-10-23 19:56:33,672 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:34,371 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:35,098 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:35,833 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:36,594 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:37,407 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:38,178 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:38,942 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:39,677 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 183 [2020-10-23 19:56:39,680 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:40,446 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:56:41,211 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:56:41,970 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:56:42,741 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 184 [2020-10-23 19:56:42,745 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:43,555 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:44,305 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:45,052 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:45,802 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 183 [2020-10-23 19:56:45,804 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:46,551 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:47,304 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:48,054 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:48,807 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 183 [2020-10-23 19:56:48,810 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 19:56:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:49,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:49,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:49,682 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:56:49,682 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:56:49,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:56:49,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:56:49 BoogieIcfgContainer [2020-10-23 19:56:49,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:56:49,717 INFO L168 Benchmark]: Toolchain (without parser) took 139330.87 ms. Allocated memory was 165.7 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 141.1 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 190.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:49,717 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:49,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.30 ms. Allocated memory is still 165.7 MB. Free memory was 140.4 MB in the beginning and 118.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:49,718 INFO L168 Benchmark]: Boogie Preprocessor took 95.31 ms. Allocated memory is still 165.7 MB. Free memory was 118.0 MB in the beginning and 114.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:49,718 INFO L168 Benchmark]: RCFGBuilder took 1363.34 ms. Allocated memory is still 165.7 MB. Free memory was 114.0 MB in the beginning and 135.0 MB in the end (delta: -21.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:49,719 INFO L168 Benchmark]: TraceAbstraction took 137152.60 ms. Allocated memory was 165.7 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 135.0 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 183.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:49,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 703.30 ms. Allocated memory is still 165.7 MB. Free memory was 140.4 MB in the beginning and 118.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.31 ms. Allocated memory is still 165.7 MB. Free memory was 118.0 MB in the beginning and 114.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1363.34 ms. Allocated memory is still 165.7 MB. Free memory was 114.0 MB in the beginning and 135.0 MB in the end (delta: -21.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 137152.60 ms. Allocated memory was 165.7 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 135.0 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 183.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L425] int waterLevel = 1; [L426] int methaneLevelCritical = 0; [L529] int methAndRunningLastTime ; [L574] int pumpRunning = 0; [L575] int systemActive = 1; [L928] int cleanupTimeShifts = 4; [L1002] int retValue_acc ; [L1003] int tmp ; [L1007] FCALL select_helpers() [L1008] FCALL select_features() [L1009] CALL, EXPR valid_product() [L919] int retValue_acc ; [L922] retValue_acc = 1 [L923] return (retValue_acc); [L1009] RET, EXPR valid_product() [L1009] tmp = valid_product() [L1011] COND TRUE \read(tmp) [L1013] FCALL setup() [L1014] CALL runTest() [L995] CALL __utac_acc__Specification2_spec__1() [L534] methAndRunningLastTime = 0 [L995] RET __utac_acc__Specification2_spec__1() [L996] CALL test() [L822] int splverifierCounter ; [L823] int tmp ; [L824] int tmp___0 ; [L825] int tmp___1 ; [L826] int tmp___2 ; [L829] splverifierCounter = 0 [L831] COND TRUE 1 [L833] COND TRUE splverifierCounter < 4 [L839] tmp = __VERIFIER_nondet_int() [L841] COND TRUE \read(tmp) [L843] CALL waterRise() [L443] COND TRUE waterLevel < 2 [L444] waterLevel = waterLevel + 1 [L843] RET waterRise() [L849] tmp___0 = __VERIFIER_nondet_int() [L851] COND TRUE \read(tmp___0) [L853] CALL changeMethaneLevel() [L455] COND FALSE !(\read(methaneLevelCritical)) [L458] methaneLevelCritical = 1 [L853] RET changeMethaneLevel() [L859] tmp___2 = __VERIFIER_nondet_int() [L861] COND TRUE \read(tmp___2) [L863] CALL startSystem() [L815] systemActive = 1 [L863] RET startSystem() [L878] CALL timeShift() [L581] COND FALSE !(\read(pumpRunning)) [L588] COND TRUE \read(systemActive) [L590] CALL processEnvironment() [L662] int tmp ; [L665] COND FALSE !(\read(pumpRunning)) [L680] CALL processEnvironment__wrappee__lowWaterSensor() [L636] int tmp ; [L639] COND FALSE !(\read(pumpRunning)) [L654] CALL processEnvironment__wrappee__highWaterSensor() [L610] int tmp ; [L613] COND TRUE ! pumpRunning [L615] CALL, EXPR isHighWaterLevel() [L759] int retValue_acc ; [L760] int tmp ; [L761] int tmp___0 ; [L765] CALL, EXPR isHighWaterSensorDry() [L505] int retValue_acc ; [L508] COND FALSE !(waterLevel < 2) [L512] retValue_acc = 0 [L513] return (retValue_acc); [L765] RET, EXPR isHighWaterSensorDry() [L765] tmp = isHighWaterSensorDry() [L767] COND FALSE !(\read(tmp)) [L770] tmp___0 = 1 [L772] retValue_acc = tmp___0 [L773] return (retValue_acc); [L615] RET, EXPR isHighWaterLevel() [L615] tmp = isHighWaterLevel() [L617] COND TRUE \read(tmp) [L619] CALL activatePump() [L690] pumpRunning = 1 [L619] RET activatePump() [L654] RET processEnvironment__wrappee__highWaterSensor() [L680] RET processEnvironment__wrappee__lowWaterSensor() [L590] RET processEnvironment() [L596] CALL __utac_acc__Specification2_spec__2() [L539] int tmp ; [L540] int tmp___0 ; [L544] CALL, EXPR isMethaneLevelCritical() [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); [L544] RET, EXPR isMethaneLevelCritical() [L544] tmp = isMethaneLevelCritical() [L546] COND TRUE \read(tmp) [L548] CALL, EXPR isPumpRunning() [L714] int retValue_acc ; [L717] retValue_acc = pumpRunning [L718] return (retValue_acc); [L548] RET, EXPR isPumpRunning() [L548] tmp___0 = isPumpRunning() [L550] COND TRUE \read(tmp___0) [L551] COND FALSE !(\read(methAndRunningLastTime)) [L556] methAndRunningLastTime = 1 [L596] RET __utac_acc__Specification2_spec__2() [L878] RET timeShift() [L831] COND TRUE 1 [L833] COND TRUE splverifierCounter < 4 [L839] tmp = __VERIFIER_nondet_int() [L841] COND FALSE !(\read(tmp)) [L849] tmp___0 = __VERIFIER_nondet_int() [L851] COND FALSE !(\read(tmp___0)) [L859] tmp___2 = __VERIFIER_nondet_int() [L861] COND TRUE \read(tmp___2) [L863] CALL startSystem() [L815] systemActive = 1 [L863] RET startSystem() [L878] CALL timeShift() [L581] COND TRUE \read(pumpRunning) [L583] CALL lowerWaterLevel() [L431] COND TRUE waterLevel > 0 [L432] waterLevel = waterLevel - 1 [L583] RET lowerWaterLevel() [L588] COND TRUE \read(systemActive) [L590] CALL processEnvironment() [L662] int tmp ; [L665] COND FALSE !(\read(pumpRunning)) [L680] CALL processEnvironment__wrappee__lowWaterSensor() [L636] int tmp ; [L639] COND FALSE !(\read(pumpRunning)) [L654] CALL processEnvironment__wrappee__highWaterSensor() [L610] int tmp ; [L613] COND TRUE ! pumpRunning [L615] CALL, EXPR isHighWaterLevel() [L759] int retValue_acc ; [L760] int tmp ; [L761] int tmp___0 ; [L765] CALL, EXPR isHighWaterSensorDry() [L505] int retValue_acc ; [L508] COND FALSE !(waterLevel < 2) [L512] retValue_acc = 0 [L513] return (retValue_acc); [L765] RET, EXPR isHighWaterSensorDry() [L765] tmp = isHighWaterSensorDry() [L767] COND FALSE !(\read(tmp)) [L770] tmp___0 = 1 [L772] retValue_acc = tmp___0 [L773] return (retValue_acc); [L615] RET, EXPR isHighWaterLevel() [L615] tmp = isHighWaterLevel() [L617] COND TRUE \read(tmp) [L619] CALL activatePump() [L690] pumpRunning = 1 [L619] RET activatePump() [L654] RET processEnvironment__wrappee__highWaterSensor() [L680] RET processEnvironment__wrappee__lowWaterSensor() [L590] RET processEnvironment() [L596] CALL __utac_acc__Specification2_spec__2() [L539] int tmp ; [L540] int tmp___0 ; [L544] CALL, EXPR isMethaneLevelCritical() [L464] int retValue_acc ; [L467] retValue_acc = methaneLevelCritical [L468] return (retValue_acc); [L544] RET, EXPR isMethaneLevelCritical() [L544] tmp = isMethaneLevelCritical() [L546] COND TRUE \read(tmp) [L548] CALL, EXPR isPumpRunning() [L714] int retValue_acc ; [L717] retValue_acc = pumpRunning [L718] return (retValue_acc); [L548] RET, EXPR isPumpRunning() [L548] tmp___0 = isPumpRunning() [L550] COND TRUE \read(tmp___0) [L551] COND TRUE \read(methAndRunningLastTime) [L553] CALL __automaton_fail() [L412] CALL reach_error() [L3] __assert_fail("0", "minepump_spec2_product56.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 45 procedures, 681 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 137.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 59.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2628 SDtfs, 10033 SDslu, 5402 SDs, 0 SdLazy, 12226 SolverSat, 3780 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 279 SyntacticMatches, 4 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4080occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 4582 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...