/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_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:09:40,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:09:40,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:09:40,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:09:40,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:09:40,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:09:40,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:09:40,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:09:40,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:09:40,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:09:40,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:09:40,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:09:40,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:09:40,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:09:40,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:09:40,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:09:40,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:09:40,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:09:40,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:09:40,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:09:40,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:09:40,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:09:40,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:09:40,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:09:40,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:09:40,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:09:40,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:09:40,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:09:40,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:09:40,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:09:40,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:09:40,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:09:40,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:09:40,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:09:40,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:09:40,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:09:40,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:09:40,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:09:40,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:09:40,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:09:40,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:09:40,706 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 20:09:40,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:09:40,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:09:40,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:09:40,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:09:40,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:09:40,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:09:40,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:09:40,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:09:40,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:09:40,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:09:40,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:09:40,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:09:40,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:09:40,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:09:40,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:09:40,742 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:09:40,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:09:40,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:09:40,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:09:40,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:09:40,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:09:40,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:09:40,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:09:41,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:09:41,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:09:41,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:09:41,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:09:41,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:09:41,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-10-23 20:09:41,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f71e042/6e0a98819e50444baf7756b7352fe51f/FLAGe454d214f [2020-10-23 20:09:42,108 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:09:42,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-10-23 20:09:42,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f71e042/6e0a98819e50444baf7756b7352fe51f/FLAGe454d214f [2020-10-23 20:09:42,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0f71e042/6e0a98819e50444baf7756b7352fe51f [2020-10-23 20:09:42,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:09:42,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:09:42,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:42,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:09:42,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:09:42,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:42" (1/1) ... [2020-10-23 20:09:42,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473eb7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:42, skipping insertion in model container [2020-10-23 20:09:42,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:09:42" (1/1) ... [2020-10-23 20:09:42,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:09:42,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:09:42,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:42,916 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:09:43,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:09:43,063 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:09:43,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43 WrapperNode [2020-10-23 20:09:43,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:09:43,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:09:43,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:09:43,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:09:43,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... [2020-10-23 20:09:43,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:09:43,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:09:43,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:09:43,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:09:43,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:09:43,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:09:43,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:09:43,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:43,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:09:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:09:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:09:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:09:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:09:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:09:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:09:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:09:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:09:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:09:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:09:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:09:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:09:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:09:43,379 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:09:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:09:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:09:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:09:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:09:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:09:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:09:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:09:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:09:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:09:43,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:09:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:09:43,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:09:43,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:09:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:09:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:09:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:09:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:09:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:09:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:09:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:09:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:09:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:09:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:09:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:09:43,388 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:09:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:09:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:09:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:09:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:09:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:09:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:09:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:09:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:09:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:09:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:09:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:09:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:09:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:09:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:09:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:09:45,124 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:09:45,124 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:09:45,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:45 BoogieIcfgContainer [2020-10-23 20:09:45,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:09:45,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:09:45,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:09:45,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:09:45,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:09:42" (1/3) ... [2020-10-23 20:09:45,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5460a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:45, skipping insertion in model container [2020-10-23 20:09:45,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:09:43" (2/3) ... [2020-10-23 20:09:45,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5460a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:09:45, skipping insertion in model container [2020-10-23 20:09:45,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:09:45" (3/3) ... [2020-10-23 20:09:45,139 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-10-23 20:09:45,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:09:45,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:09:45,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:09:45,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:09:45,212 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:09:45,213 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:09:45,213 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:09:45,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:09:45,213 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:09:45,213 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:09:45,213 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:09:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-23 20:09:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:09:45,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:45,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:45,268 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 20:09:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash -786049614, now seen corresponding path program 1 times [2020-10-23 20:09:45,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:45,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539187978] [2020-10-23 20:09:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:45,392 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,241 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:09:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:09:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:46,495 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 20:09:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539187978] [2020-10-23 20:09:46,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:46,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:09:46,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656404475] [2020-10-23 20:09:46,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:09:46,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:46,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:09:46,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:09:46,525 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 3 states. [2020-10-23 20:09:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:48,674 INFO L93 Difference]: Finished difference Result 487 states and 577 transitions. [2020-10-23 20:09:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:09:48,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:09:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:48,696 INFO L225 Difference]: With dead ends: 487 [2020-10-23 20:09:48,696 INFO L226 Difference]: Without dead ends: 302 [2020-10-23 20:09:48,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:09:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-23 20:09:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-10-23 20:09:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-23 20:09:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 282 transitions. [2020-10-23 20:09:48,897 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 282 transitions. Word has length 148 [2020-10-23 20:09:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:48,901 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 282 transitions. [2020-10-23 20:09:48,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:09:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 282 transitions. [2020-10-23 20:09:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:09:48,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:48,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:09:48,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:09:48,923 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 20:09:48,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:48,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1887239954, now seen corresponding path program 1 times [2020-10-23 20:09:48,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:48,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131603927] [2020-10-23 20:09:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:48,937 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,545 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:09:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:09:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:09:49,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131603927] [2020-10-23 20:09:49,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:49,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:09:49,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949558217] [2020-10-23 20:09:49,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:09:49,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:09:49,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:09:49,652 INFO L87 Difference]: Start difference. First operand 261 states and 282 transitions. Second operand 4 states. [2020-10-23 20:09:50,543 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:09:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:51,774 INFO L93 Difference]: Finished difference Result 401 states and 448 transitions. [2020-10-23 20:09:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:09:51,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:09:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:51,780 INFO L225 Difference]: With dead ends: 401 [2020-10-23 20:09:51,780 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 20:09:51,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:09:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 20:09:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-10-23 20:09:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 20:09:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 269 transitions. [2020-10-23 20:09:51,940 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 269 transitions. Word has length 149 [2020-10-23 20:09:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:51,944 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 269 transitions. [2020-10-23 20:09:51,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:09:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 269 transitions. [2020-10-23 20:09:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 20:09:51,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:51,948 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] [2020-10-23 20:09:51,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:09:51,948 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 20:09:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:51,950 INFO L82 PathProgramCache]: Analyzing trace with hash 353098351, now seen corresponding path program 1 times [2020-10-23 20:09:51,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:51,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366571869] [2020-10-23 20:09:51,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:51,957 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,562 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:09:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 20:09:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:52,879 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 20:09:52,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366571869] [2020-10-23 20:09:52,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:52,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:09:52,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313933750] [2020-10-23 20:09:52,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:09:52,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:09:52,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:09:52,888 INFO L87 Difference]: Start difference. First operand 251 states and 269 transitions. Second operand 9 states. [2020-10-23 20:09:53,724 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:09:54,258 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:09:54,659 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:09:55,103 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:55,527 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:09:55,956 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:09:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:09:57,998 INFO L93 Difference]: Finished difference Result 421 states and 473 transitions. [2020-10-23 20:09:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:09:57,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 20:09:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:09:58,010 INFO L225 Difference]: With dead ends: 421 [2020-10-23 20:09:58,010 INFO L226 Difference]: Without dead ends: 285 [2020-10-23 20:09:58,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:09:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-23 20:09:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-10-23 20:09:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-23 20:09:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 268 transitions. [2020-10-23 20:09:58,180 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 268 transitions. Word has length 158 [2020-10-23 20:09:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:09:58,182 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 268 transitions. [2020-10-23 20:09:58,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:09:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 268 transitions. [2020-10-23 20:09:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 20:09:58,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:09:58,188 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] [2020-10-23 20:09:58,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:09:58,189 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 20:09:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:09:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1154482631, now seen corresponding path program 1 times [2020-10-23 20:09:58,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:09:58,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407762222] [2020-10-23 20:09:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:09:58,197 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:09:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,778 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:09:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:09:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:09:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:09:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:09:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:09:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 20:09:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:09:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-23 20:09:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:09:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:09:58,992 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 20:09:58,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407762222] [2020-10-23 20:09:58,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:09:58,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:09:58,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369562444] [2020-10-23 20:09:58,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:09:58,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:09:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:09:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:09:58,996 INFO L87 Difference]: Start difference. First operand 251 states and 268 transitions. Second operand 6 states. [2020-10-23 20:09:59,840 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:01,976 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:03,046 INFO L93 Difference]: Finished difference Result 554 states and 630 transitions. [2020-10-23 20:10:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:10:03,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-23 20:10:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:03,051 INFO L225 Difference]: With dead ends: 554 [2020-10-23 20:10:03,052 INFO L226 Difference]: Without dead ends: 418 [2020-10-23 20:10:03,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:10:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-23 20:10:03,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 357. [2020-10-23 20:10:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-23 20:10:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 383 transitions. [2020-10-23 20:10:03,234 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 383 transitions. Word has length 171 [2020-10-23 20:10:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:03,235 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 383 transitions. [2020-10-23 20:10:03,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:10:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 383 transitions. [2020-10-23 20:10:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-23 20:10:03,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:03,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:10:03,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:10:03,239 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 20:10:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1460694233, now seen corresponding path program 1 times [2020-10-23 20:10:03,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178016135] [2020-10-23 20:10:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:03,244 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,803 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 20:10:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:03,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-23 20:10:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-23 20:10:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:04,176 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 20:10:04,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178016135] [2020-10-23 20:10:04,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:04,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:10:04,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426600593] [2020-10-23 20:10:04,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:10:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:10:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:10:04,181 INFO L87 Difference]: Start difference. First operand 357 states and 383 transitions. Second operand 14 states. [2020-10-23 20:10:04,999 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:05,571 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:05,989 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:06,416 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:06,820 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:07,215 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:08,184 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:09,787 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:10,209 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:10,640 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:11,074 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:10:11,476 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:11,857 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:12,247 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:12,676 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:13,109 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:10:13,514 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:10:15,479 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:10:15,898 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:16,454 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:17,466 INFO L93 Difference]: Finished difference Result 1047 states and 1246 transitions. [2020-10-23 20:10:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:10:17,467 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 195 [2020-10-23 20:10:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:17,474 INFO L225 Difference]: With dead ends: 1047 [2020-10-23 20:10:17,475 INFO L226 Difference]: Without dead ends: 805 [2020-10-23 20:10:17,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:10:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-23 20:10:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 708. [2020-10-23 20:10:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-23 20:10:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 787 transitions. [2020-10-23 20:10:17,854 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 787 transitions. Word has length 195 [2020-10-23 20:10:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:17,855 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 787 transitions. [2020-10-23 20:10:17,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:10:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 787 transitions. [2020-10-23 20:10:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-23 20:10:17,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:17,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:17,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:10:17,864 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 20:10:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 518821354, now seen corresponding path program 1 times [2020-10-23 20:10:17,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:17,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179963822] [2020-10-23 20:10:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:18,065 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:10:18,068 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,571 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:10:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:10:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 20:10:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:10:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-23 20:10:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-23 20:10:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:10:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:10:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-23 20:10:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-23 20:10:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:18,961 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 20:10:18,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179963822] [2020-10-23 20:10:18,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:18,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:10:18,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659521094] [2020-10-23 20:10:18,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:10:18,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:10:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:10:18,968 INFO L87 Difference]: Start difference. First operand 708 states and 787 transitions. Second operand 11 states. [2020-10-23 20:10:20,682 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:21,128 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:21,558 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:10:21,966 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:22,421 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:22,811 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:24,626 INFO L93 Difference]: Finished difference Result 1411 states and 1629 transitions. [2020-10-23 20:10:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:10:24,627 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 271 [2020-10-23 20:10:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:24,635 INFO L225 Difference]: With dead ends: 1411 [2020-10-23 20:10:24,635 INFO L226 Difference]: Without dead ends: 818 [2020-10-23 20:10:24,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:10:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-23 20:10:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 735. [2020-10-23 20:10:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-23 20:10:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 816 transitions. [2020-10-23 20:10:25,019 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 816 transitions. Word has length 271 [2020-10-23 20:10:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:25,019 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 816 transitions. [2020-10-23 20:10:25,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:10:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 816 transitions. [2020-10-23 20:10:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-23 20:10:25,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:25,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:25,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:10:25,028 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 20:10:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash 424138795, now seen corresponding path program 1 times [2020-10-23 20:10:25,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:25,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894821634] [2020-10-23 20:10:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:25,187 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:10:25,191 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:10:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,622 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:10:25,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:10:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:10:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:10:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:10:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:10:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-23 20:10:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:10:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:10:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:10:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-23 20:10:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:10:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-23 20:10:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-23 20:10:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:10:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 20:10:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:10:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-23 20:10:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-23 20:10:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:10:26,078 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 20:10:26,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894821634] [2020-10-23 20:10:26,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:10:26,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:10:26,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783017459] [2020-10-23 20:10:26,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:10:26,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:10:26,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:10:26,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:10:26,082 INFO L87 Difference]: Start difference. First operand 735 states and 816 transitions. Second operand 14 states. [2020-10-23 20:10:26,943 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:10:27,410 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:10:27,881 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:28,271 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:28,670 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:29,775 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:30,175 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:30,584 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:30,998 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:10:31,401 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:10:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:10:33,403 INFO L93 Difference]: Finished difference Result 1317 states and 1519 transitions. [2020-10-23 20:10:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:10:33,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 272 [2020-10-23 20:10:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:10:33,412 INFO L225 Difference]: With dead ends: 1317 [2020-10-23 20:10:33,413 INFO L226 Difference]: Without dead ends: 697 [2020-10-23 20:10:33,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 20:10:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-23 20:10:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 635. [2020-10-23 20:10:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-10-23 20:10:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 698 transitions. [2020-10-23 20:10:33,780 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 698 transitions. Word has length 272 [2020-10-23 20:10:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:10:33,781 INFO L481 AbstractCegarLoop]: Abstraction has 635 states and 698 transitions. [2020-10-23 20:10:33,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:10:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 698 transitions. [2020-10-23 20:10:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-23 20:10:33,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:10:33,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:33,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:10:33,790 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 20:10:33,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:10:33,791 INFO L82 PathProgramCache]: Analyzing trace with hash 319933892, now seen corresponding path program 1 times [2020-10-23 20:10:33,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:10:33,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436719554] [2020-10-23 20:10:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:10:34,056 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-23 20:10:34,495 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-23 20:10:34,859 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-23 20:10:35,244 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-23 20:10:35,567 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-23 20:10:35,897 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-23 20:10:36,228 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-23 20:10:36,585 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-23 20:10:36,960 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-23 20:10:37,359 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-23 20:10:37,470 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-23 20:10:37,760 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-23 20:10:38,119 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-23 20:10:38,444 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-23 20:10:38,782 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-10-23 20:10:39,842 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-23 20:10:40,686 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-23 20:10:41,473 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-23 20:10:42,301 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-23 20:10:42,310 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:42,863 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:43,372 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:43,899 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:44,422 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:44,962 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:45,473 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:45,975 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:46,489 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:46,493 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:47,188 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:47,709 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:48,225 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:48,735 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:49,285 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:49,816 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:50,342 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:50,871 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:51,419 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:51,423 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:52,062 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:52,811 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-10-23 20:10:53,593 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-10-23 20:10:54,309 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-10-23 20:10:55,056 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-10-23 20:10:55,065 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:55,632 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:56,386 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2020-10-23 20:10:57,169 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2020-10-23 20:10:57,954 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2020-10-23 20:10:58,688 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 194 [2020-10-23 20:10:58,702 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:59,247 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:10:59,808 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:00,358 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:00,906 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:01,418 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:01,947 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:02,509 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:03,044 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-23 20:11:03,048 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:03,545 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:04,073 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:04,623 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:05,142 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:05,657 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:06,182 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:06,720 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:07,267 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:07,271 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:07,798 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2020-10-23 20:11:08,308 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2020-10-23 20:11:08,831 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2020-10-23 20:11:09,381 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2020-10-23 20:11:09,906 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2020-10-23 20:11:10,436 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2020-10-23 20:11:10,945 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 144 [2020-10-23 20:11:11,454 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 145 [2020-10-23 20:11:11,457 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:11,984 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:12,507 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:13,026 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:13,545 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:14,050 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:14,559 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-23 20:11:15,064 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:15,575 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-10-23 20:11:15,578 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:16,185 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 150 [2020-10-23 20:11:16,847 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 150 [2020-10-23 20:11:17,500 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 150 [2020-10-23 20:11:18,193 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 150 [2020-10-23 20:11:18,198 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:18,965 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-23 20:11:19,737 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-23 20:11:20,518 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-23 20:11:21,341 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-23 20:11:21,346 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:11:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:21,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:11:21,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:11:22,210 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:11:22,211 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:11:22,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:11:22,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:11:22 BoogieIcfgContainer [2020-10-23 20:11:22,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:11:22,248 INFO L168 Benchmark]: Toolchain (without parser) took 99844.23 ms. Allocated memory was 159.4 MB in the beginning and 602.9 MB in the end (delta: 443.5 MB). Free memory was 135.6 MB in the beginning and 401.0 MB in the end (delta: -265.5 MB). Peak memory consumption was 178.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:22,249 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:11:22,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.44 ms. Allocated memory is still 159.4 MB. Free memory was 135.0 MB in the beginning and 114.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:22,250 INFO L168 Benchmark]: Boogie Preprocessor took 160.00 ms. Allocated memory is still 159.4 MB. Free memory was 114.4 MB in the beginning and 110.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:22,251 INFO L168 Benchmark]: RCFGBuilder took 1901.34 ms. Allocated memory was 159.4 MB in the beginning and 200.3 MB in the end (delta: 40.9 MB). Free memory was 110.4 MB in the beginning and 134.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:22,252 INFO L168 Benchmark]: TraceAbstraction took 97116.62 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 134.7 MB in the beginning and 401.0 MB in the end (delta: -266.3 MB). Peak memory consumption was 135.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:11:22,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 653.44 ms. Allocated memory is still 159.4 MB. Free memory was 135.0 MB in the beginning and 114.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 160.00 ms. Allocated memory is still 159.4 MB. Free memory was 114.4 MB in the beginning and 110.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1901.34 ms. Allocated memory was 159.4 MB in the beginning and 200.3 MB in the end (delta: 40.9 MB). Free memory was 110.4 MB in the beginning and 134.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 97116.62 ms. Allocated memory was 200.3 MB in the beginning and 602.9 MB in the end (delta: 402.7 MB). Free memory was 134.7 MB in the beginning and 401.0 MB in the end (delta: -266.3 MB). Peak memory consumption was 135.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L705] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L409] int retValue_acc ; [L410] int tmp ; [L414] FCALL select_helpers() [L415] FCALL select_features() [L416] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L416] RET, EXPR valid_product() [L416] tmp = valid_product() [L418] COND TRUE \read(tmp) [L420] FCALL setup() [L421] CALL runTest() [L403] CALL test() [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) [L106] CALL waterRise() [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 [L106] RET waterRise() [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) [L137] CALL timeShift() [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L174] CALL processEnvironment() [L220] int tmp ; [L223] COND FALSE !(\read(pumpRunning)) [L238] CALL processEnvironment__wrappee__highWaterSensor() [L194] int tmp ; [L197] COND TRUE ! pumpRunning [L199] CALL, EXPR isHighWaterLevel() [L317] int retValue_acc ; [L318] int tmp ; [L319] int tmp___0 ; [L323] CALL, EXPR isHighWaterSensorDry() [L522] int retValue_acc ; [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); [L323] RET, EXPR isHighWaterSensorDry() [L323] tmp = isHighWaterSensorDry() [L325] COND FALSE !(\read(tmp)) [L328] tmp___0 = 1 [L330] retValue_acc = tmp___0 [L331] return (retValue_acc); [L199] RET, EXPR isHighWaterLevel() [L199] tmp = isHighWaterLevel() [L201] COND TRUE \read(tmp) [L203] CALL activatePump() [L248] pumpRunning = 1 [L203] RET activatePump() [L238] RET processEnvironment__wrappee__highWaterSensor() [L174] RET processEnvironment() [L180] CALL __utac_acc__Specification4_spec__1() [L903] int tmp ; [L904] int tmp___0 ; [L908] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L908] RET, EXPR getWaterLevel() [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) [L180] RET __utac_acc__Specification4_spec__1() [L137] RET timeShift() [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) [L137] CALL timeShift() [L165] COND TRUE \read(pumpRunning) [L167] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L167] RET lowerWaterLevel() [L172] COND TRUE \read(systemActive) [L174] CALL processEnvironment() [L220] int tmp ; [L223] COND TRUE \read(pumpRunning) [L225] CALL, EXPR isMethaneAlarm() [L261] int retValue_acc ; [L265] CALL, EXPR isMethaneLevelCritical() [L481] int retValue_acc ; [L484] retValue_acc = methaneLevelCritical [L485] return (retValue_acc); [L265] RET, EXPR isMethaneLevelCritical() [L265] retValue_acc = isMethaneLevelCritical() [L267] return (retValue_acc); [L225] RET, EXPR isMethaneAlarm() [L225] tmp = isMethaneAlarm() [L227] COND TRUE \read(tmp) [L229] CALL deactivatePump() [L256] pumpRunning = 0 [L229] RET deactivatePump() [L174] RET processEnvironment() [L180] CALL __utac_acc__Specification4_spec__1() [L903] int tmp ; [L904] int tmp___0 ; [L908] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L908] RET, EXPR getWaterLevel() [L908] tmp = getWaterLevel() [L910] COND TRUE tmp == 0 [L912] CALL, EXPR isPumpRunning() [L272] int retValue_acc ; [L275] retValue_acc = pumpRunning [L276] return (retValue_acc); [L912] RET, EXPR isPumpRunning() [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) [L916] CALL __automaton_fail() [L436] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product37.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 631 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 97.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 39.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1699 SDtfs, 2662 SDslu, 3702 SDs, 0 SdLazy, 7101 SolverSat, 770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=735occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 412 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...