/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:47:05,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:47:05,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:47:05,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:47:05,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:47:05,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:47:05,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:47:05,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:47:05,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:47:05,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:47:05,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:47:05,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:47:05,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:47:05,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:47:05,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:47:05,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:47:05,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:47:05,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:47:05,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:47:05,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:47:05,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:47:05,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:47:05,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:47:05,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:47:05,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:47:05,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:47:05,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:47:05,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:47:05,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:47:05,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:47:05,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:47:05,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:47:05,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:47:05,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:47:05,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:47:05,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:47:05,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:47:05,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:47:05,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:47:05,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:47:05,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:47:05,382 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 19:47:05,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:47:05,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:47:05,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:47:05,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:47:05,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:47:05,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:47:05,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:47:05,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:47:05,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:47:05,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:47:05,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:47:05,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:47:05,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:47:05,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:47:05,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:47:05,399 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:47:05,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:47:05,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:47:05,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:47:05,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:47:05,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:47:05,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:47:05,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:47:05,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:47:05,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:47:05,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:47:05,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:47:05,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:47:05,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-10-23 19:47:05,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474371fa1/97a9e8817fdc4e4785cc76876577c454/FLAG070f07708 [2020-10-23 19:47:06,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:47:06,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-10-23 19:47:06,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474371fa1/97a9e8817fdc4e4785cc76876577c454/FLAG070f07708 [2020-10-23 19:47:06,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474371fa1/97a9e8817fdc4e4785cc76876577c454 [2020-10-23 19:47:06,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:47:06,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:47:06,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:06,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:47:06,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:47:06,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:06" (1/1) ... [2020-10-23 19:47:06,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d91be23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:06, skipping insertion in model container [2020-10-23 19:47:06,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:47:06" (1/1) ... [2020-10-23 19:47:06,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:47:06,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:47:07,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:07,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:47:07,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:47:07,476 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:47:07,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07 WrapperNode [2020-10-23 19:47:07,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:47:07,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:47:07,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:47:07,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:47:07,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (1/1) ... [2020-10-23 19:47:07,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:47:07,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:47:07,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:47:07,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:47:07,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (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 19:47:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:47:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:47:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:47:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:47:07,731 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:47:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:47:07,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:47:07,734 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:47:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:47:07,735 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:47:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:47:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:47:07,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:47:07,736 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:47:07,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:47:07,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:47:07,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:47:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:47:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:47:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:47:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:47:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:47:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:47:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:47:09,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:47:09,250 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:47:09,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:09 BoogieIcfgContainer [2020-10-23 19:47:09,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:47:09,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:47:09,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:47:09,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:47:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:47:06" (1/3) ... [2020-10-23 19:47:09,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3936e1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:09, skipping insertion in model container [2020-10-23 19:47:09,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:47:07" (2/3) ... [2020-10-23 19:47:09,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3936e1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:47:09, skipping insertion in model container [2020-10-23 19:47:09,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:47:09" (3/3) ... [2020-10-23 19:47:09,266 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-10-23 19:47:09,278 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:47:09,284 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:47:09,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:47:09,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:47:09,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:47:09,335 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:47:09,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:47:09,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:47:09,335 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:47:09,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:47:09,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:47:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states. [2020-10-23 19:47:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:47:09,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:09,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:09,389 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 19:47:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:09,395 INFO L82 PathProgramCache]: Analyzing trace with hash 961635695, now seen corresponding path program 1 times [2020-10-23 19:47:09,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:09,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440466918] [2020-10-23 19:47:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:09,487 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,452 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:47:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:10,670 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 19:47:10,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440466918] [2020-10-23 19:47:10,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:10,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:47:10,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805496131] [2020-10-23 19:47:10,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:47:10,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:47:10,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:10,706 INFO L87 Difference]: Start difference. First operand 297 states. Second operand 3 states. [2020-10-23 19:47:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:12,329 INFO L93 Difference]: Finished difference Result 438 states and 522 transitions. [2020-10-23 19:47:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:47:12,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:47:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:12,348 INFO L225 Difference]: With dead ends: 438 [2020-10-23 19:47:12,348 INFO L226 Difference]: Without dead ends: 277 [2020-10-23 19:47:12,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:47:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-23 19:47:12,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 237. [2020-10-23 19:47:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-23 19:47:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 255 transitions. [2020-10-23 19:47:12,496 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 255 transitions. Word has length 148 [2020-10-23 19:47:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:12,497 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 255 transitions. [2020-10-23 19:47:12,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:47:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 255 transitions. [2020-10-23 19:47:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:47:12,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:12,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:12,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:47:12,503 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 19:47:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash 571866584, now seen corresponding path program 1 times [2020-10-23 19:47:12,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:12,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208063023] [2020-10-23 19:47:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:12,509 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:12,998 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:47:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:13,089 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 19:47:13,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208063023] [2020-10-23 19:47:13,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:13,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:47:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438024340] [2020-10-23 19:47:13,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:47:13,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:47:13,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:47:13,093 INFO L87 Difference]: Start difference. First operand 237 states and 255 transitions. Second operand 4 states. [2020-10-23 19:47:13,900 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:14,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:14,904 INFO L93 Difference]: Finished difference Result 348 states and 389 transitions. [2020-10-23 19:47:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:47:14,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:47:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:14,911 INFO L225 Difference]: With dead ends: 348 [2020-10-23 19:47:14,911 INFO L226 Difference]: Without dead ends: 260 [2020-10-23 19:47:14,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:47:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-23 19:47:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 227. [2020-10-23 19:47:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-23 19:47:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2020-10-23 19:47:15,005 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 149 [2020-10-23 19:47:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:15,006 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2020-10-23 19:47:15,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:47:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2020-10-23 19:47:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 19:47:15,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:15,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:15,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:47:15,010 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 19:47:15,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1932278497, now seen corresponding path program 1 times [2020-10-23 19:47:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:15,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159846389] [2020-10-23 19:47:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:15,015 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,462 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:47:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:47:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:15,633 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 19:47:15,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159846389] [2020-10-23 19:47:15,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:15,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:15,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211141721] [2020-10-23 19:47:15,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:15,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:15,641 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand 10 states. [2020-10-23 19:47:16,380 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:16,831 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:17,249 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:47:17,658 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:18,107 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:18,520 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:20,262 INFO L93 Difference]: Finished difference Result 394 states and 451 transitions. [2020-10-23 19:47:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:47:20,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 19:47:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:20,269 INFO L225 Difference]: With dead ends: 394 [2020-10-23 19:47:20,270 INFO L226 Difference]: Without dead ends: 282 [2020-10-23 19:47:20,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:47:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-23 19:47:20,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 227. [2020-10-23 19:47:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-23 19:47:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 241 transitions. [2020-10-23 19:47:20,342 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 241 transitions. Word has length 162 [2020-10-23 19:47:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:20,343 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 241 transitions. [2020-10-23 19:47:20,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 241 transitions. [2020-10-23 19:47:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-23 19:47:20,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:20,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:20,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:47:20,347 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 19:47:20,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash -959869354, now seen corresponding path program 1 times [2020-10-23 19:47:20,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:20,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090815548] [2020-10-23 19:47:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:20,354 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,828 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:47:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 19:47:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:21,038 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 19:47:21,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090815548] [2020-10-23 19:47:21,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:21,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:47:21,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111479290] [2020-10-23 19:47:21,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:47:21,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:47:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:47:21,041 INFO L87 Difference]: Start difference. First operand 227 states and 241 transitions. Second operand 7 states. [2020-10-23 19:47:21,732 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:23,873 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:24,755 INFO L93 Difference]: Finished difference Result 567 states and 670 transitions. [2020-10-23 19:47:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 19:47:24,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-23 19:47:24,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:24,762 INFO L225 Difference]: With dead ends: 567 [2020-10-23 19:47:24,762 INFO L226 Difference]: Without dead ends: 455 [2020-10-23 19:47:24,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:47:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-23 19:47:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 326. [2020-10-23 19:47:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-23 19:47:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2020-10-23 19:47:24,922 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 350 transitions. Word has length 170 [2020-10-23 19:47:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:24,923 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 350 transitions. [2020-10-23 19:47:24,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:47:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 350 transitions. [2020-10-23 19:47:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 19:47:24,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:24,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:24,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:47:24,927 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 19:47:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash 963333066, now seen corresponding path program 1 times [2020-10-23 19:47:24,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:24,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781281098] [2020-10-23 19:47:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:24,931 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,320 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 19:47:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 19:47:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:25,607 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 19:47:25,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781281098] [2020-10-23 19:47:25,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:25,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:25,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675810485] [2020-10-23 19:47:25,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:25,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:25,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:25,613 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand 10 states. [2020-10-23 19:47:26,361 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:27,711 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:28,146 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:28,560 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:28,959 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:29,402 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:47:29,747 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:32,085 INFO L93 Difference]: Finished difference Result 927 states and 1135 transitions. [2020-10-23 19:47:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 19:47:32,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-10-23 19:47:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:32,092 INFO L225 Difference]: With dead ends: 927 [2020-10-23 19:47:32,093 INFO L226 Difference]: Without dead ends: 716 [2020-10-23 19:47:32,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:47:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-23 19:47:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 503. [2020-10-23 19:47:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-23 19:47:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 552 transitions. [2020-10-23 19:47:32,367 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 552 transitions. Word has length 194 [2020-10-23 19:47:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:32,368 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 552 transitions. [2020-10-23 19:47:32,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 552 transitions. [2020-10-23 19:47:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-23 19:47:32,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:32,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:32,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:47:32,373 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 19:47:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash 754984295, now seen corresponding path program 1 times [2020-10-23 19:47:32,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:32,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552017023] [2020-10-23 19:47:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:32,377 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,807 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 19:47:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:47:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-23 19:47:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-23 19:47:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:33,050 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 19:47:33,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552017023] [2020-10-23 19:47:33,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:33,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:47:33,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131738373] [2020-10-23 19:47:33,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:47:33,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:33,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:47:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:47:33,055 INFO L87 Difference]: Start difference. First operand 503 states and 552 transitions. Second operand 10 states. [2020-10-23 19:47:33,770 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:35,608 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:36,017 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:36,437 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:36,809 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:37,210 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:37,590 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:37,980 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:38,516 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:40,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:40,289 INFO L93 Difference]: Finished difference Result 1601 states and 1975 transitions. [2020-10-23 19:47:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:47:40,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-10-23 19:47:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:40,298 INFO L225 Difference]: With dead ends: 1601 [2020-10-23 19:47:40,298 INFO L226 Difference]: Without dead ends: 1213 [2020-10-23 19:47:40,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:47:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-23 19:47:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 829. [2020-10-23 19:47:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-23 19:47:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 918 transitions. [2020-10-23 19:47:40,765 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 918 transitions. Word has length 194 [2020-10-23 19:47:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:40,766 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 918 transitions. [2020-10-23 19:47:40,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:47:40,766 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 918 transitions. [2020-10-23 19:47:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 19:47:40,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:40,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:40,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:47:40,771 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 19:47:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash -712463800, now seen corresponding path program 1 times [2020-10-23 19:47:40,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:40,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444340496] [2020-10-23 19:47:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:40,775 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,191 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:47:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:47:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-23 19:47:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-23 19:47:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:41,468 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 19:47:41,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444340496] [2020-10-23 19:47:41,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:41,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:47:41,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365931972] [2020-10-23 19:47:41,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:47:41,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:41,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:47:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:47:41,470 INFO L87 Difference]: Start difference. First operand 829 states and 918 transitions. Second operand 11 states. [2020-10-23 19:47:42,140 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:44,056 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:44,527 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:44,882 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:47:45,294 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:45,711 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:46,163 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:47:46,600 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:47,055 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:49,042 INFO L93 Difference]: Finished difference Result 1459 states and 1834 transitions. [2020-10-23 19:47:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:47:49,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-10-23 19:47:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:49,054 INFO L225 Difference]: With dead ends: 1459 [2020-10-23 19:47:49,055 INFO L226 Difference]: Without dead ends: 1455 [2020-10-23 19:47:49,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-23 19:47:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-23 19:47:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 829. [2020-10-23 19:47:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-23 19:47:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 916 transitions. [2020-10-23 19:47:49,418 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 916 transitions. Word has length 199 [2020-10-23 19:47:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:49,419 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 916 transitions. [2020-10-23 19:47:49,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:47:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 916 transitions. [2020-10-23 19:47:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:47:49,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:49,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:49,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:47:49,423 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 19:47:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1672080698, now seen corresponding path program 1 times [2020-10-23 19:47:49,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:49,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342884947] [2020-10-23 19:47:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:49,427 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,814 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:49,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:47:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:47:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:47:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:47:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:50,017 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 19:47:50,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342884947] [2020-10-23 19:47:50,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:50,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:47:50,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11525477] [2020-10-23 19:47:50,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:47:50,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:50,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:47:50,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:47:50,019 INFO L87 Difference]: Start difference. First operand 829 states and 916 transitions. Second operand 11 states. [2020-10-23 19:47:51,634 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:52,062 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:52,481 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:47:52,885 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:53,302 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:53,678 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:47:55,796 INFO L93 Difference]: Finished difference Result 2191 states and 2695 transitions. [2020-10-23 19:47:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:47:55,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-10-23 19:47:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:47:55,809 INFO L225 Difference]: With dead ends: 2191 [2020-10-23 19:47:55,809 INFO L226 Difference]: Without dead ends: 1477 [2020-10-23 19:47:55,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 19:47:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-10-23 19:47:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 861. [2020-10-23 19:47:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-10-23 19:47:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 948 transitions. [2020-10-23 19:47:56,182 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 948 transitions. Word has length 200 [2020-10-23 19:47:56,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:47:56,183 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 948 transitions. [2020-10-23 19:47:56,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:47:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 948 transitions. [2020-10-23 19:47:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-23 19:47:56,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:47:56,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:47:56,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:47:56,188 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 19:47:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:47:56,189 INFO L82 PathProgramCache]: Analyzing trace with hash 532286874, now seen corresponding path program 1 times [2020-10-23 19:47:56,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:47:56,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863827079] [2020-10-23 19:47:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:47:56,192 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:47:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,589 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:47:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:47:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:47:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:47:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:47:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:47:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:47:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:47:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:47:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:47:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:47:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:47:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-23 19:47:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:47:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:47:56,800 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 19:47:56,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863827079] [2020-10-23 19:47:56,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:47:56,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 19:47:56,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449948328] [2020-10-23 19:47:56,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 19:47:56,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:47:56,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 19:47:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:47:56,802 INFO L87 Difference]: Start difference. First operand 861 states and 948 transitions. Second operand 14 states. [2020-10-23 19:47:57,583 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:47:57,969 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:47:58,342 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:47:58,714 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:47:59,088 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:00,188 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:00,576 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:00,982 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:01,418 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:48:01,816 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:48:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:48:03,901 INFO L93 Difference]: Finished difference Result 1863 states and 2256 transitions. [2020-10-23 19:48:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:48:03,902 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2020-10-23 19:48:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:48:03,910 INFO L225 Difference]: With dead ends: 1863 [2020-10-23 19:48:03,910 INFO L226 Difference]: Without dead ends: 1117 [2020-10-23 19:48:03,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:48:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-23 19:48:04,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 703. [2020-10-23 19:48:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-23 19:48:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 756 transitions. [2020-10-23 19:48:04,215 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 756 transitions. Word has length 200 [2020-10-23 19:48:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:48:04,216 INFO L481 AbstractCegarLoop]: Abstraction has 703 states and 756 transitions. [2020-10-23 19:48:04,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 19:48:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 756 transitions. [2020-10-23 19:48:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-23 19:48:04,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:48:04,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:48:04,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:48:04,219 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 19:48:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:48:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash -387097581, now seen corresponding path program 1 times [2020-10-23 19:48:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:48:04,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946188048] [2020-10-23 19:48:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:48:04,223 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:48:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:04,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:48:04,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:48:04,599 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:48:04,600 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:48:04,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 19:48:04,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:48:04 BoogieIcfgContainer [2020-10-23 19:48:04,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:48:04,629 INFO L168 Benchmark]: Toolchain (without parser) took 57849.16 ms. Allocated memory was 151.0 MB in the beginning and 659.6 MB in the end (delta: 508.6 MB). Free memory was 126.8 MB in the beginning and 442.6 MB in the end (delta: -315.7 MB). Peak memory consumption was 193.9 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:04,629 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:48:04,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.33 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 105.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:04,630 INFO L168 Benchmark]: Boogie Preprocessor took 155.17 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 101.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:04,631 INFO L168 Benchmark]: RCFGBuilder took 1620.45 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 125.8 MB in the end (delta: -24.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:04,632 INFO L168 Benchmark]: TraceAbstraction took 55369.53 ms. Allocated memory was 181.4 MB in the beginning and 659.6 MB in the end (delta: 478.2 MB). Free memory was 125.3 MB in the beginning and 442.6 MB in the end (delta: -317.3 MB). Peak memory consumption was 161.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:48:04,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 692.33 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 105.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 155.17 ms. Allocated memory is still 151.0 MB. Free memory was 105.2 MB in the beginning and 101.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1620.45 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 125.8 MB in the end (delta: -24.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55369.53 ms. Allocated memory was 181.4 MB in the beginning and 659.6 MB in the end (delta: 478.2 MB). Free memory was 125.3 MB in the beginning and 442.6 MB in the end (delta: -317.3 MB). Peak memory consumption was 161.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 [L631] COND TRUE 1 [L633] COND TRUE splverifierCounter < 4 [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) [L643] CALL waterRise() [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 [L643] RET waterRise() [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) [L653] CALL changeMethaneLevel() [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 [L653] RET changeMethaneLevel() [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L663] CALL startSystem() [L847] systemActive = 1 [L663] RET startSystem() [L676] CALL timeShift() [L699] COND FALSE !(\read(pumpRunning)) [L706] COND TRUE \read(systemActive) [L708] CALL processEnvironment() [L728] int tmp ; [L731] COND TRUE ! pumpRunning [L733] CALL, EXPR isHighWaterLevel() [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L831] CALL, EXPR isHighWaterSensorDry() [L606] int retValue_acc ; [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); [L831] RET, EXPR isHighWaterSensorDry() [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); [L733] RET, EXPR isHighWaterLevel() [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L737] CALL activatePump() [L756] pumpRunning = 1 [L737] RET activatePump() [L708] RET processEnvironment() [L714] CALL __utac_acc__Specification1_spec__1() [L853] int tmp ; [L854] int tmp___0 ; [L858] CALL, EXPR isMethaneLevelCritical() [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L862] CALL, EXPR isPumpRunning() [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); [L862] RET, EXPR isPumpRunning() [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) [L866] CALL __automaton_fail() [L516] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product34.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 623 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 46.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1978 SDtfs, 4428 SDslu, 4744 SDs, 0 SdLazy, 8509 SolverSat, 1219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 23.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 2510 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...