/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:52:47,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:52:47,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:52:47,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:52:47,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:52:47,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:52:47,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:52:47,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:52:47,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:52:47,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:52:47,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:52:47,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:52:47,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:52:47,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:52:47,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:52:47,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:52:47,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:52:47,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:52:47,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:52:47,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:52:47,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:52:47,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:52:47,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:52:47,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:52:47,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:52:47,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:52:47,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:52:47,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:52:47,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:52:47,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:52:47,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:52:47,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:52:47,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:52:47,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:52:47,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:52:47,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:52:47,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:52:47,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:52:47,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:52:47,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:52:47,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:52:47,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:52:47,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:52:47,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:52:47,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:52:47,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:52:47,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:52:47,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:52:47,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:52:47,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:52:47,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:52:47,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:52:47,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:52:47,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:52:47,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:52:47,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:52:47,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:52:47,482 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:52:47,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:52:47,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:52:47,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:47,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:52:47,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:52:47,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:52:47,484 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:52:47,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:52:47,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:52:47,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:52:47,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:52:47,911 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:52:47,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-10-23 19:52:47,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745a966fe/b5906f519eb34724a483b44a2c3a89ca/FLAGf8f4626ab [2020-10-23 19:52:48,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:52:48,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-10-23 19:52:48,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745a966fe/b5906f519eb34724a483b44a2c3a89ca/FLAGf8f4626ab [2020-10-23 19:52:48,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745a966fe/b5906f519eb34724a483b44a2c3a89ca [2020-10-23 19:52:48,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:52:48,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:52:48,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:48,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:52:48,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:52:48,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:48" (1/1) ... [2020-10-23 19:52:48,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fe50fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:48, skipping insertion in model container [2020-10-23 19:52:48,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:52:48" (1/1) ... [2020-10-23 19:52:48,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:52:49,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:52:49,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:49,371 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:52:49,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:52:49,497 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:52:49,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49 WrapperNode [2020-10-23 19:52:49,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:52:49,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:52:49,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:52:49,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:52:49,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... [2020-10-23 19:52:49,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:52:49,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:52:49,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:52:49,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:52:49,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:52:49,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:52:49,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:52:49,733 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:52:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:52:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:52:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:52:49,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:52:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:52:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:52:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:52:49,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:52:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:52:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:52:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:52:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:52:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:52:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:52:49,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:52:49,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:52:49,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:52:49,740 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:52:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:52:49,742 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:52:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:52:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:52:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:52:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:52:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:52:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:52:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-10-23 19:52:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:52:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:52:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:52:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:52:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:52:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:52:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:52:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:52:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:52:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:52:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:52:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:52:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:52:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:52:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:52:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:52:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:52:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:52:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:52:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:52:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:52:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:52:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:52:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:52:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:52:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:52:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:52:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:52:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:52:51,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:52:51,380 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:52:51,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:51 BoogieIcfgContainer [2020-10-23 19:52:51,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:52:51,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:52:51,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:52:51,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:52:51,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:52:48" (1/3) ... [2020-10-23 19:52:51,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e019957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:51, skipping insertion in model container [2020-10-23 19:52:51,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:52:49" (2/3) ... [2020-10-23 19:52:51,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e019957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:52:51, skipping insertion in model container [2020-10-23 19:52:51,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:52:51" (3/3) ... [2020-10-23 19:52:51,393 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-10-23 19:52:51,405 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:52:51,411 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:52:51,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:52:51,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:52:51,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:52:51,449 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:52:51,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:52:51,449 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:52:51,449 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:52:51,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:52:51,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:52:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states. [2020-10-23 19:52:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-23 19:52:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:51,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:52:51,495 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1385693674, now seen corresponding path program 1 times [2020-10-23 19:52:51,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:51,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575204431] [2020-10-23 19:52:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:51,588 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,399 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:52:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 19:52:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:52,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575204431] [2020-10-23 19:52:52,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:52,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:52:52,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521776221] [2020-10-23 19:52:52,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:52:52,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:52,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:52:52,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:52,641 INFO L87 Difference]: Start difference. First operand 329 states. Second operand 4 states. [2020-10-23 19:52:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:54,440 INFO L93 Difference]: Finished difference Result 515 states and 613 transitions. [2020-10-23 19:52:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 19:52:54,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-23 19:52:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:54,459 INFO L225 Difference]: With dead ends: 515 [2020-10-23 19:52:54,460 INFO L226 Difference]: Without dead ends: 327 [2020-10-23 19:52:54,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:52:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-23 19:52:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 275. [2020-10-23 19:52:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-23 19:52:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 300 transitions. [2020-10-23 19:52:54,662 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 300 transitions. Word has length 154 [2020-10-23 19:52:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:54,665 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 300 transitions. [2020-10-23 19:52:54,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:52:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 300 transitions. [2020-10-23 19:52:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-23 19:52:54,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:54,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:52:54,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:52:54,683 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash 446073712, now seen corresponding path program 1 times [2020-10-23 19:52:54,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730407616] [2020-10-23 19:52:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:54,693 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,263 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:52:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-23 19:52:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:55,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730407616] [2020-10-23 19:52:55,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:55,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 19:52:55,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374898154] [2020-10-23 19:52:55,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 19:52:55,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:55,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 19:52:55,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:52:55,417 INFO L87 Difference]: Start difference. First operand 275 states and 300 transitions. Second operand 5 states. [2020-10-23 19:52:56,290 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:52:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:52:57,717 INFO L93 Difference]: Finished difference Result 431 states and 492 transitions. [2020-10-23 19:52:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:52:57,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-23 19:52:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:52:57,722 INFO L225 Difference]: With dead ends: 431 [2020-10-23 19:52:57,722 INFO L226 Difference]: Without dead ends: 316 [2020-10-23 19:52:57,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:52:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-23 19:52:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 265. [2020-10-23 19:52:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-23 19:52:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2020-10-23 19:52:57,829 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 155 [2020-10-23 19:52:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:52:57,829 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2020-10-23 19:52:57,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 19:52:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2020-10-23 19:52:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 19:52:57,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:52:57,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:52:57,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:52:57,833 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:52:57,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:52:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash 128728025, now seen corresponding path program 1 times [2020-10-23 19:52:57,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:52:57,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700394215] [2020-10-23 19:52:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:52:57,837 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:52:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,328 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:52:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:52:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:52:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:52:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:52:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:52:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:52:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 19:52:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:52:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:52:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:52:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:52:58,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700394215] [2020-10-23 19:52:58,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:52:58,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:52:58,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314679320] [2020-10-23 19:52:58,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:52:58,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:52:58,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:52:58,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:52:58,517 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand 11 states. [2020-10-23 19:52:59,302 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:52:59,779 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:00,178 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 19:53:00,611 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:01,011 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:01,405 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:02,672 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:05,954 INFO L93 Difference]: Finished difference Result 727 states and 858 transitions. [2020-10-23 19:53:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 19:53:05,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-23 19:53:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:05,961 INFO L225 Difference]: With dead ends: 727 [2020-10-23 19:53:05,962 INFO L226 Difference]: Without dead ends: 582 [2020-10-23 19:53:05,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:53:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-23 19:53:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 473. [2020-10-23 19:53:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-23 19:53:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 532 transitions. [2020-10-23 19:53:06,158 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 532 transitions. Word has length 168 [2020-10-23 19:53:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:06,158 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 532 transitions. [2020-10-23 19:53:06,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:53:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 532 transitions. [2020-10-23 19:53:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-23 19:53:06,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:06,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:06,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:53:06,163 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 19:53:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 952513339, now seen corresponding path program 1 times [2020-10-23 19:53:06,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:06,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498773917] [2020-10-23 19:53:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:06,167 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,589 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:06,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:53:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:53:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:53:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:06,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498773917] [2020-10-23 19:53:06,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:06,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:53:06,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567310825] [2020-10-23 19:53:06,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:53:06,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:53:06,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:53:06,784 INFO L87 Difference]: Start difference. First operand 473 states and 532 transitions. Second operand 10 states. [2020-10-23 19:53:07,443 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:09,063 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:09,540 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:10,089 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:10,515 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:10,978 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:11,460 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:11,884 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:12,575 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:14,297 INFO L93 Difference]: Finished difference Result 1306 states and 1594 transitions. [2020-10-23 19:53:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 19:53:14,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2020-10-23 19:53:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:14,308 INFO L225 Difference]: With dead ends: 1306 [2020-10-23 19:53:14,308 INFO L226 Difference]: Without dead ends: 953 [2020-10-23 19:53:14,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-10-23 19:53:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-23 19:53:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 777. [2020-10-23 19:53:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-10-23 19:53:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 887 transitions. [2020-10-23 19:53:14,676 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 887 transitions. Word has length 173 [2020-10-23 19:53:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:14,677 INFO L481 AbstractCegarLoop]: Abstraction has 777 states and 887 transitions. [2020-10-23 19:53:14,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:53:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 887 transitions. [2020-10-23 19:53:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-23 19:53:14,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:14,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:14,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:53:14,682 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 19:53:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1066079806, now seen corresponding path program 1 times [2020-10-23 19:53:14,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:14,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099578337] [2020-10-23 19:53:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:14,686 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,106 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 19:53:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:53:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:53:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:15,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099578337] [2020-10-23 19:53:15,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:15,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 19:53:15,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552248109] [2020-10-23 19:53:15,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 19:53:15,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:15,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 19:53:15,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:53:15,380 INFO L87 Difference]: Start difference. First operand 777 states and 887 transitions. Second operand 11 states. [2020-10-23 19:53:16,085 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:17,775 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:18,168 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:18,607 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:19,009 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 19:53:19,389 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:20,398 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:20,766 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:21,255 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:23,105 INFO L93 Difference]: Finished difference Result 2031 states and 2548 transitions. [2020-10-23 19:53:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 19:53:23,106 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2020-10-23 19:53:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:23,115 INFO L225 Difference]: With dead ends: 2031 [2020-10-23 19:53:23,115 INFO L226 Difference]: Without dead ends: 1374 [2020-10-23 19:53:23,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-10-23 19:53:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-10-23 19:53:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1075. [2020-10-23 19:53:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-10-23 19:53:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1229 transitions. [2020-10-23 19:53:23,580 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1229 transitions. Word has length 178 [2020-10-23 19:53:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:23,581 INFO L481 AbstractCegarLoop]: Abstraction has 1075 states and 1229 transitions. [2020-10-23 19:53:23,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 19:53:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1229 transitions. [2020-10-23 19:53:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:53:23,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:23,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:23,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:53:23,587 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 19:53:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:23,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1683930922, now seen corresponding path program 1 times [2020-10-23 19:53:23,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:23,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739492885] [2020-10-23 19:53:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:23,592 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,018 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:53:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:53:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:24,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739492885] [2020-10-23 19:53:24,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:24,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 19:53:24,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778887712] [2020-10-23 19:53:24,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 19:53:24,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:24,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 19:53:24,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-23 19:53:24,338 INFO L87 Difference]: Start difference. First operand 1075 states and 1229 transitions. Second operand 12 states. [2020-10-23 19:53:26,302 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:26,704 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:27,143 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 19:53:27,564 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:27,988 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:28,377 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:30,442 INFO L93 Difference]: Finished difference Result 2678 states and 3372 transitions. [2020-10-23 19:53:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:53:30,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 211 [2020-10-23 19:53:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:30,454 INFO L225 Difference]: With dead ends: 2678 [2020-10-23 19:53:30,455 INFO L226 Difference]: Without dead ends: 1723 [2020-10-23 19:53:30,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-23 19:53:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-23 19:53:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1113. [2020-10-23 19:53:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-10-23 19:53:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1269 transitions. [2020-10-23 19:53:30,866 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1269 transitions. Word has length 211 [2020-10-23 19:53:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:30,867 INFO L481 AbstractCegarLoop]: Abstraction has 1113 states and 1269 transitions. [2020-10-23 19:53:30,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 19:53:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1269 transitions. [2020-10-23 19:53:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:53:30,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:30,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:30,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:53:30,872 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 19:53:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:30,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2097562314, now seen corresponding path program 1 times [2020-10-23 19:53:30,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:30,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794438252] [2020-10-23 19:53:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:30,875 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,312 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:53:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:53:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:31,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794438252] [2020-10-23 19:53:31,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:31,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 19:53:31,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633618025] [2020-10-23 19:53:31,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 19:53:31,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:31,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 19:53:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:53:31,583 INFO L87 Difference]: Start difference. First operand 1113 states and 1269 transitions. Second operand 15 states. [2020-10-23 19:53:32,383 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:53:32,766 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:53:33,161 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:33,534 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:33,894 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:35,247 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:35,646 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:36,054 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:36,488 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 19:53:36,866 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:53:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:39,971 INFO L93 Difference]: Finished difference Result 2760 states and 3520 transitions. [2020-10-23 19:53:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 19:53:39,972 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 211 [2020-10-23 19:53:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:39,984 INFO L225 Difference]: With dead ends: 2760 [2020-10-23 19:53:39,984 INFO L226 Difference]: Without dead ends: 1767 [2020-10-23 19:53:39,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 19:53:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-10-23 19:53:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1137. [2020-10-23 19:53:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2020-10-23 19:53:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1293 transitions. [2020-10-23 19:53:40,489 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1293 transitions. Word has length 211 [2020-10-23 19:53:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:40,490 INFO L481 AbstractCegarLoop]: Abstraction has 1137 states and 1293 transitions. [2020-10-23 19:53:40,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 19:53:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1293 transitions. [2020-10-23 19:53:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:53:40,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:40,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:40,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:53:40,494 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 19:53:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2028044205, now seen corresponding path program 1 times [2020-10-23 19:53:40,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:40,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064216273] [2020-10-23 19:53:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:40,498 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,905 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-23 19:53:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 19:53:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:53:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-23 19:53:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-23 19:53:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:41,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064216273] [2020-10-23 19:53:41,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:41,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:53:41,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943993510] [2020-10-23 19:53:41,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:53:41,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:41,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:53:41,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:53:41,156 INFO L87 Difference]: Start difference. First operand 1137 states and 1293 transitions. Second operand 9 states. [2020-10-23 19:53:41,905 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:42,802 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:47,819 INFO L93 Difference]: Finished difference Result 4349 states and 5596 transitions. [2020-10-23 19:53:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-23 19:53:47,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-10-23 19:53:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:47,842 INFO L225 Difference]: With dead ends: 4349 [2020-10-23 19:53:47,842 INFO L226 Difference]: Without dead ends: 3332 [2020-10-23 19:53:47,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2020-10-23 19:53:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2020-10-23 19:53:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2329. [2020-10-23 19:53:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2020-10-23 19:53:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 2675 transitions. [2020-10-23 19:53:49,188 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 2675 transitions. Word has length 211 [2020-10-23 19:53:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:49,189 INFO L481 AbstractCegarLoop]: Abstraction has 2329 states and 2675 transitions. [2020-10-23 19:53:49,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:53:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 2675 transitions. [2020-10-23 19:53:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-23 19:53:49,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:49,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:49,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:53:49,198 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1944445495, now seen corresponding path program 1 times [2020-10-23 19:53:49,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:49,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104516901] [2020-10-23 19:53:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:49,202 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:53:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,631 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:53:49,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:53:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 19:53:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 19:53:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 19:53:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 19:53:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 19:53:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:53:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:53:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:53:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-23 19:53:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:53:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:53:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:53:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-23 19:53:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-23 19:53:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:53:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:53:49,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104516901] [2020-10-23 19:53:49,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:53:49,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:53:49,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697455739] [2020-10-23 19:53:49,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:53:49,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:53:49,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:53:49,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:53:49,818 INFO L87 Difference]: Start difference. First operand 2329 states and 2675 transitions. Second operand 9 states. [2020-10-23 19:53:50,693 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:53:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:53:57,428 INFO L93 Difference]: Finished difference Result 5348 states and 7000 transitions. [2020-10-23 19:53:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-23 19:53:57,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-10-23 19:53:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:53:57,463 INFO L225 Difference]: With dead ends: 5348 [2020-10-23 19:53:57,463 INFO L226 Difference]: Without dead ends: 5344 [2020-10-23 19:53:57,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2020-10-23 19:53:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2020-10-23 19:53:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 3708. [2020-10-23 19:53:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3708 states. [2020-10-23 19:53:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 4357 transitions. [2020-10-23 19:53:59,062 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 4357 transitions. Word has length 216 [2020-10-23 19:53:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:53:59,063 INFO L481 AbstractCegarLoop]: Abstraction has 3708 states and 4357 transitions. [2020-10-23 19:53:59,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:53:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 4357 transitions. [2020-10-23 19:53:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-23 19:53:59,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:53:59,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:53:59,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:53:59,079 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:53:59,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:53:59,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1460244502, now seen corresponding path program 1 times [2020-10-23 19:53:59,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:53:59,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285687041] [2020-10-23 19:53:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:53:59,110 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 19:53:59,115 INFO L168 Benchmark]: Toolchain (without parser) took 70173.27 ms. Allocated memory was 151.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 126.6 MB in the beginning and 813.7 MB in the end (delta: -687.0 MB). Peak memory consumption was 331.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:59,116 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:53:59,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:59,117 INFO L168 Benchmark]: Boogie Preprocessor took 92.98 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 100.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:59,118 INFO L168 Benchmark]: RCFGBuilder took 1790.77 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 90.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:59,119 INFO L168 Benchmark]: TraceAbstraction took 67727.92 ms. Allocated memory was 151.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 90.4 MB in the beginning and 813.7 MB in the end (delta: -723.3 MB). Peak memory consumption was 293.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:53:59,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 544.20 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.98 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 100.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1790.77 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 90.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 67727.92 ms. Allocated memory was 151.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 90.4 MB in the beginning and 813.7 MB in the end (delta: -723.3 MB). Peak memory consumption was 293.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...