/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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:13:31,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:13:31,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:13:31,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:13:31,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:13:31,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:13:31,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:13:31,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:13:31,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:13:31,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:13:31,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:13:31,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:13:31,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:13:31,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:13:31,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:13:31,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:13:31,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:13:31,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:13:31,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:13:31,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:13:31,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:13:31,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:13:31,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:13:31,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:13:31,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:13:31,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:13:31,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:13:31,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:13:31,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:13:31,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:13:31,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:13:31,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:13:31,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:13:31,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:13:31,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:13:31,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:13:31,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:13:31,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:13:31,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:13:31,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:13:31,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:13:31,689 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 20:13:31,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:13:31,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:13:31,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:13:31,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:13:31,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:13:31,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:13:31,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:13:31,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:13:31,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:13:31,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:13:31,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:13:31,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:13:31,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:13:31,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:13:31,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:13:31,731 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:13:31,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:13:31,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:13:31,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:13:31,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:13:31,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:13:31,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:13:31,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:13:32,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:13:32,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:13:32,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:13:32,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:13:32,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:13:32,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2020-10-23 20:13:32,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c77ff5c/792666b5d37d4aa2b6316d7ce943b919/FLAG27c941580 [2020-10-23 20:13:33,320 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:13:33,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2020-10-23 20:13:33,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c77ff5c/792666b5d37d4aa2b6316d7ce943b919/FLAG27c941580 [2020-10-23 20:13:33,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c77ff5c/792666b5d37d4aa2b6316d7ce943b919 [2020-10-23 20:13:33,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:13:33,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:13:33,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:13:33,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:13:33,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:13:33,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:13:33" (1/1) ... [2020-10-23 20:13:33,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b13197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:33, skipping insertion in model container [2020-10-23 20:13:33,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:13:33" (1/1) ... [2020-10-23 20:13:33,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:13:33,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:13:33,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:13:33,978 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:13:34,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:13:34,147 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:13:34,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34 WrapperNode [2020-10-23 20:13:34,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:13:34,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:13:34,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:13:34,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:13:34,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (1/1) ... [2020-10-23 20:13:34,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:13:34,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:13:34,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:13:34,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:13:34,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (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 20:13:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:13:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:13:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:13:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:13:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:13:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:13:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:13:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 20:13:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:13:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:13:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:13:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:13:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:13:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:13:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:13:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:13:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:13:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:13:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:13:34,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:13:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:13:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:13:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:13:34,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:13:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:13:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:13:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:13:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:13:34,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:13:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:13:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:13:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:13:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:13:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:13:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:13:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:13:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:13:34,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:13:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:13:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:13:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:13:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:13:34,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:13:34,382 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:13:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:13:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:13:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:13:34,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:13:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:13:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:13:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:13:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:13:34,383 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:13:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:13:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:13:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:13:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:13:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:13:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:13:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:13:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:13:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 20:13:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:13:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 20:13:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:13:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:13:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:13:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:13:34,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:13:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:13:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:13:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:13:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:13:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:13:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:13:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:13:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:13:35,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:13:35,901 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:13:35,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:13:35 BoogieIcfgContainer [2020-10-23 20:13:35,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:13:35,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:13:35,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:13:35,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:13:35,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:13:33" (1/3) ... [2020-10-23 20:13:35,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551836f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:13:35, skipping insertion in model container [2020-10-23 20:13:35,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:13:34" (2/3) ... [2020-10-23 20:13:35,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551836f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:13:35, skipping insertion in model container [2020-10-23 20:13:35,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:13:35" (3/3) ... [2020-10-23 20:13:35,913 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product56.cil.c [2020-10-23 20:13:35,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:13:35,932 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:13:35,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:13:35,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:13:35,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:13:35,975 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:13:35,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:13:35,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:13:35,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:13:35,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:13:35,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:13:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states. [2020-10-23 20:13:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:13:36,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:13:36,026 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 20:13:36,026 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 20:13:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:13:36,033 INFO L82 PathProgramCache]: Analyzing trace with hash -2011491367, now seen corresponding path program 1 times [2020-10-23 20:13:36,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:13:36,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471145261] [2020-10-23 20:13:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:13:36,130 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:13:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:36,890 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:13:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:13:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:13:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:13:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:13:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:13:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:13:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:13:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:37,082 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 20:13:37,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471145261] [2020-10-23 20:13:37,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:13:37,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:13:37,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067904027] [2020-10-23 20:13:37,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:13:37,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:13:37,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:13:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:13:37,113 INFO L87 Difference]: Start difference. First operand 356 states. Second operand 3 states. [2020-10-23 20:13:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:13:39,224 INFO L93 Difference]: Finished difference Result 574 states and 681 transitions. [2020-10-23 20:13:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:13:39,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:13:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:13:39,267 INFO L225 Difference]: With dead ends: 574 [2020-10-23 20:13:39,267 INFO L226 Difference]: Without dead ends: 348 [2020-10-23 20:13:39,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:13:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-23 20:13:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 302. [2020-10-23 20:13:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-23 20:13:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2020-10-23 20:13:39,500 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 148 [2020-10-23 20:13:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:13:39,501 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2020-10-23 20:13:39,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:13:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2020-10-23 20:13:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:13:39,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:13:39,507 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 20:13:39,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:13:39,508 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 20:13:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:13:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1416756575, now seen corresponding path program 1 times [2020-10-23 20:13:39,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:13:39,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508994204] [2020-10-23 20:13:39,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:13:39,513 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:13:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,082 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:13:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:13:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:13:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:13:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:13:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:13:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:13:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:13:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:40,178 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 20:13:40,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508994204] [2020-10-23 20:13:40,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:13:40,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:13:40,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955622961] [2020-10-23 20:13:40,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:13:40,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:13:40,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:13:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:13:40,187 INFO L87 Difference]: Start difference. First operand 302 states and 330 transitions. Second operand 4 states. [2020-10-23 20:13:41,043 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:13:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:13:42,673 INFO L93 Difference]: Finished difference Result 478 states and 540 transitions. [2020-10-23 20:13:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:13:42,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:13:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:13:42,679 INFO L225 Difference]: With dead ends: 478 [2020-10-23 20:13:42,680 INFO L226 Difference]: Without dead ends: 331 [2020-10-23 20:13:42,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:13:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-23 20:13:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 292. [2020-10-23 20:13:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-23 20:13:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 317 transitions. [2020-10-23 20:13:42,830 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 317 transitions. Word has length 149 [2020-10-23 20:13:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:13:42,831 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 317 transitions. [2020-10-23 20:13:42,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:13:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 317 transitions. [2020-10-23 20:13:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:13:42,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:13:42,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:13:42,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:13:42,836 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 20:13:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:13:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1213129868, now seen corresponding path program 1 times [2020-10-23 20:13:42,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:13:42,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322092] [2020-10-23 20:13:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:13:42,841 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:13:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,413 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:13:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:13:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:13:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:13:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:13:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:13:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:13:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:13:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:13:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:43,662 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 20:13:43,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322092] [2020-10-23 20:13:43,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:13:43,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:13:43,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487674077] [2020-10-23 20:13:43,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:13:43,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:13:43,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:13:43,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:13:43,668 INFO L87 Difference]: Start difference. First operand 292 states and 317 transitions. Second operand 10 states. [2020-10-23 20:13:44,351 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:13:44,871 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:13:45,305 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:13:45,734 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:13:46,143 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:13:46,565 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:13:47,799 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:13:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:13:51,492 INFO L93 Difference]: Finished difference Result 806 states and 938 transitions. [2020-10-23 20:13:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:13:51,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:13:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:13:51,503 INFO L225 Difference]: With dead ends: 806 [2020-10-23 20:13:51,503 INFO L226 Difference]: Without dead ends: 629 [2020-10-23 20:13:51,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:13:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-10-23 20:13:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 528. [2020-10-23 20:13:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-23 20:13:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 592 transitions. [2020-10-23 20:13:51,724 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 592 transitions. Word has length 162 [2020-10-23 20:13:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:13:51,725 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 592 transitions. [2020-10-23 20:13:51,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:13:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 592 transitions. [2020-10-23 20:13:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:13:51,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:13:51,729 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] [2020-10-23 20:13:51,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:13:51,730 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 20:13:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:13:51,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1648826126, now seen corresponding path program 1 times [2020-10-23 20:13:51,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:13:51,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378183674] [2020-10-23 20:13:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:13:51,734 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:13:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,257 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:13:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:13:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:13:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:13:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:13:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:13:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:13:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:13:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:13:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:13:52,520 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 20:13:52,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378183674] [2020-10-23 20:13:52,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:13:52,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:13:52,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128709792] [2020-10-23 20:13:52,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:13:52,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:13:52,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:13:52,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:13:52,523 INFO L87 Difference]: Start difference. First operand 528 states and 592 transitions. Second operand 14 states. [2020-10-23 20:13:53,235 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:13:53,749 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:13:54,174 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:13:54,602 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:13:55,016 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:13:55,413 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:13:56,295 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:13:57,660 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:13:58,164 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:13:58,751 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:13:59,310 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:13:59,760 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:14:00,138 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:14:00,663 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:14:01,104 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:14:01,508 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:14:02,113 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:14:02,821 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:14:03,387 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:14:03,969 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:14:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:14:07,605 INFO L93 Difference]: Finished difference Result 1863 states and 2328 transitions. [2020-10-23 20:14:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:14:07,606 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2020-10-23 20:14:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:14:07,622 INFO L225 Difference]: With dead ends: 1863 [2020-10-23 20:14:07,623 INFO L226 Difference]: Without dead ends: 1450 [2020-10-23 20:14:07,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:14:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2020-10-23 20:14:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1307. [2020-10-23 20:14:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-10-23 20:14:08,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1549 transitions. [2020-10-23 20:14:08,395 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1549 transitions. Word has length 167 [2020-10-23 20:14:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:14:08,397 INFO L481 AbstractCegarLoop]: Abstraction has 1307 states and 1549 transitions. [2020-10-23 20:14:08,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:14:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1549 transitions. [2020-10-23 20:14:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 20:14:08,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:08,406 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] [2020-10-23 20:14:08,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:14:08,407 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 20:14:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:08,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2065780540, now seen corresponding path program 1 times [2020-10-23 20:14:08,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:08,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880845417] [2020-10-23 20:14:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:08,413 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:14:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,879 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:14:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:14:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:14:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:14:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:14:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:14:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:14:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:14:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:14:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 20:14:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:14:09,042 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 20:14:09,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880845417] [2020-10-23 20:14:09,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:14:09,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:14:09,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71377431] [2020-10-23 20:14:09,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:14:09,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:14:09,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:14:09,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:14:09,050 INFO L87 Difference]: Start difference. First operand 1307 states and 1549 transitions. Second operand 6 states. [2020-10-23 20:14:09,682 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:14:13,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:14:13,196 INFO L93 Difference]: Finished difference Result 2940 states and 3706 transitions. [2020-10-23 20:14:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:14:13,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-23 20:14:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:14:13,209 INFO L225 Difference]: With dead ends: 2940 [2020-10-23 20:14:13,210 INFO L226 Difference]: Without dead ends: 1748 [2020-10-23 20:14:13,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:14:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-23 20:14:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1620. [2020-10-23 20:14:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2020-10-23 20:14:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 1908 transitions. [2020-10-23 20:14:13,828 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 1908 transitions. Word has length 172 [2020-10-23 20:14:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:14:13,829 INFO L481 AbstractCegarLoop]: Abstraction has 1620 states and 1908 transitions. [2020-10-23 20:14:13,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:14:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 1908 transitions. [2020-10-23 20:14:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 20:14:13,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:14:13,834 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] [2020-10-23 20:14:13,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:14:13,835 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 20:14:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:14:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2068709974, now seen corresponding path program 1 times [2020-10-23 20:14:13,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:14:13,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750653740] [2020-10-23 20:14:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:14:13,990 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:14,269 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:14,514 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:14,620 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-23 20:14:14,795 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:15,032 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:15,269 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:15,492 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:15,727 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:15,972 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:16,205 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:16,441 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:16,676 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:16,923 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:17,186 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:17,433 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:17,665 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:14:17,891 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:14:18,123 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:14:18,575 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:18,911 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:19,269 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:19,661 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:20,000 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:20,350 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:20,676 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:21,025 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:14:21,029 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:14:23,783 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:23,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:26,505 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:26,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:29,186 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:29,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:31,782 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:31,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:33,013 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:35,565 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:38,048 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:38,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:39,108 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:39,116 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:14:40,549 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:40,554 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:41,669 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:41,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:44,235 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:44,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:46,769 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:46,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:49,432 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:49,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:51,947 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:51,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:54,504 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:14:54,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:57,033 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:14:57,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:14:57,043 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:14:59,531 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:14:59,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:02,079 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:15:02,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:03,192 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:15:05,749 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:15:05,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:08,233 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:15:08,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:10,825 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:15:10,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:13,334 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:15:13,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:15,906 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:15:15,910 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:15,914 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:15:18,442 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:15:18,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:20,958 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:15:20,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:23,553 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:15:23,558 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:26,089 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:15:26,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:28,723 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:15:28,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:31,345 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:15:31,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:33,912 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:15:33,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:35,613 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:15:35,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:35,621 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:15:36,001 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:15:36,365 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:15:36,738 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:15:37,102 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:15:37,467 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:15:37,834 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:15:38,199 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:15:38,563 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:15:38,565 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:15:41,107 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:15:41,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:42,425 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:15:45,013 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:15:45,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:47,541 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:15:47,546 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:50,095 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:15:50,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:52,680 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:15:52,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:15:55,254 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:15:57,914 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:15:57,918 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:00,469 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:00,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:03,067 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:03,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:05,598 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:08,111 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:08,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:10,687 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:10,692 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:13,364 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:13,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:16,012 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:16,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:18,642 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:18,648 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:19,036 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:19,427 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:19,834 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:20,252 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:20,679 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:21,062 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:21,455 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:21,841 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:21,843 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:24,397 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:24,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:26,863 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:26,866 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:29,460 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:29,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:31,174 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:31,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:33,156 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:34,780 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:16:34,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:37,322 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:37,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:39,882 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-23 20:16:39,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:39,887 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:40,255 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:40,671 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:41,087 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:41,510 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:41,903 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:16:42,282 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:42,675 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:43,067 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:16:43,069 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:43,476 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:43,900 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:44,316 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:44,726 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:45,118 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:45,543 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:45,978 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:46,410 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:16:46,413 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:16:48,498 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:16:48,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:51,112 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:16:51,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:53,809 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:16:53,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:16:56,440 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:16:59,155 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:16:59,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:01,716 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:17:04,366 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:07,017 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:07,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:07,025 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:09,676 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:17:09,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:12,313 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:17:14,926 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:17:14,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:17,567 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:17:17,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:20,298 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:17:20,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:23,027 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:17:25,701 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:17:25,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:28,487 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:17:28,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:28,495 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:31,219 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:17:31,223 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:34,042 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:17:34,046 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:36,817 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:36,822 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:39,628 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:17:39,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:42,314 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:42,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:45,037 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:17:45,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:47,619 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:50,287 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-23 20:17:50,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:50,293 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:17:52,996 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:17:55,685 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-23 20:17:55,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:17:58,334 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:18:01,061 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:18:03,705 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:18:03,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:06,329 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:18:06,331 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:08,941 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:18:08,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:11,580 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:18:11,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:11,587 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:11,966 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:18:12,342 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:18:12,739 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:18:13,126 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:18:13,506 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:18:13,876 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:18:14,291 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:18:14,700 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-23 20:18:14,702 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:17,398 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:18:17,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:20,145 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:18:20,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:22,859 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:18:22,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:25,534 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:18:25,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:28,211 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:18:28,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:30,826 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:18:30,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:33,500 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:18:33,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:36,246 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:18:36,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:18:36,253 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:18:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:18:36,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:18:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:18:37,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:18:37,559 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:18:37,560 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:18:37,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:18:37,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:18:37 BoogieIcfgContainer [2020-10-23 20:18:37,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:18:37,607 INFO L168 Benchmark]: Toolchain (without parser) took 304110.24 ms. Allocated memory was 125.8 MB in the beginning and 735.1 MB in the end (delta: 609.2 MB). Free memory was 101.5 MB in the beginning and 562.0 MB in the end (delta: -460.5 MB). Peak memory consumption was 149.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:18:37,608 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:18:37,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.63 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 78.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:18:37,610 INFO L168 Benchmark]: Boogie Preprocessor took 119.35 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 78.6 MB in the beginning and 134.5 MB in the end (delta: -55.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:18:37,611 INFO L168 Benchmark]: RCFGBuilder took 1634.89 ms. Allocated memory is still 153.1 MB. Free memory was 134.5 MB in the beginning and 118.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:18:37,616 INFO L168 Benchmark]: TraceAbstraction took 301700.21 ms. Allocated memory was 153.1 MB in the beginning and 735.1 MB in the end (delta: 582.0 MB). Free memory was 118.3 MB in the beginning and 562.0 MB in the end (delta: -443.7 MB). Peak memory consumption was 138.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:18:37,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 643.63 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 78.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 119.35 ms. Allocated memory was 125.8 MB in the beginning and 153.1 MB in the end (delta: 27.3 MB). Free memory was 78.6 MB in the beginning and 134.5 MB in the end (delta: -55.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1634.89 ms. Allocated memory is still 153.1 MB. Free memory was 134.5 MB in the beginning and 118.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 301700.21 ms. Allocated memory was 153.1 MB in the beginning and 735.1 MB in the end (delta: 582.0 MB). Free memory was 118.3 MB in the beginning and 562.0 MB in the end (delta: -443.7 MB). Peak memory consumption was 138.3 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: [L54] int pumpRunning = 0; [L55] int systemActive = 1; [L470] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L767] int cleanupTimeShifts = 4; [L875] int waterLevel = 1; [L876] int methaneLevelCritical = 0; [L843] int retValue_acc ; [L844] int tmp ; [L848] FCALL select_helpers() [L849] FCALL select_features() [L850] CALL, EXPR valid_product() [L1004] int retValue_acc ; [L1007] retValue_acc = 1 [L1008] return (retValue_acc); [L850] RET, EXPR valid_product() [L850] tmp = valid_product() [L852] COND TRUE \read(tmp) [L854] FCALL setup() [L855] CALL runTest() [L834] CALL test() [L671] int splverifierCounter ; [L672] int tmp ; [L673] int tmp___0 ; [L674] int tmp___1 ; [L675] int tmp___2 ; [L678] splverifierCounter = 0 [L680] COND TRUE 1 [L682] COND TRUE splverifierCounter < 4 [L688] tmp = __VERIFIER_nondet_int() [L690] COND TRUE \read(tmp) [L692] CALL waterRise() [L893] COND TRUE waterLevel < 2 [L894] waterLevel = waterLevel + 1 [L692] RET waterRise() [L698] tmp___0 = __VERIFIER_nondet_int() [L700] COND FALSE !(\read(tmp___0)) [L708] tmp___2 = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp___2)) [L716] tmp___1 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___1) [L720] CALL stopSystem() [L281] COND FALSE !(\read(pumpRunning)) [L288] systemActive = 0 [L720] RET stopSystem() [L727] CALL timeShift() [L62] COND FALSE !(\read(pumpRunning)) [L69] COND FALSE !(\read(systemActive)) [L77] CALL __utac_acc__Specification4_spec__1() [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR getWaterLevel() [L946] int retValue_acc ; [L949] retValue_acc = waterLevel [L950] return (retValue_acc); [L747] RET, EXPR getWaterLevel() [L747] tmp = getWaterLevel() [L749] COND FALSE !(tmp == 0) [L77] RET __utac_acc__Specification4_spec__1() [L727] RET timeShift() [L680] COND TRUE 1 [L682] COND TRUE splverifierCounter < 4 [L688] tmp = __VERIFIER_nondet_int() [L690] COND TRUE \read(tmp) [L692] CALL waterRise() [L893] COND TRUE waterLevel < 2 [L894] waterLevel = waterLevel + 1 [L692] RET waterRise() [L698] tmp___0 = __VERIFIER_nondet_int() [L700] COND FALSE !(\read(tmp___0)) [L708] tmp___2 = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp___2)) [L716] tmp___1 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___1)) [L727] CALL timeShift() [L62] COND FALSE !(\read(pumpRunning)) [L69] COND FALSE !(\read(systemActive)) [L77] CALL __utac_acc__Specification4_spec__1() [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR getWaterLevel() [L946] int retValue_acc ; [L949] retValue_acc = waterLevel [L950] return (retValue_acc); [L747] RET, EXPR getWaterLevel() [L747] tmp = getWaterLevel() [L749] COND TRUE tmp == 0 [L751] CALL, EXPR isPumpRunning() [L195] int retValue_acc ; [L198] retValue_acc = pumpRunning [L199] return (retValue_acc); [L751] RET, EXPR isPumpRunning() [L751] tmp___0 = isPumpRunning() [L753] COND TRUE \read(tmp___0) [L755] CALL __automaton_fail() [L870] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product56.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 672 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 301.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1425 SDtfs, 2906 SDslu, 2373 SDs, 0 SdLazy, 5865 SolverSat, 1075 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1620occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 457 StatesRemovedByMinimization, 5 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...