/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:49:00,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:49:00,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:49:00,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:49:00,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:49:00,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:49:00,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:49:00,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:49:00,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:49:00,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:49:00,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:49:00,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:49:00,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:49:00,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:49:00,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:49:00,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:49:00,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:49:00,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:49:00,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:49:00,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:49:00,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:49:00,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:49:00,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:49:00,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:49:00,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:49:00,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:49:00,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:49:00,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:49:00,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:49:00,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:49:00,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:49:00,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:49:00,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:49:00,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:49:00,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:49:00,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:49:00,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:49:00,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:49:00,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:49:00,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:49:00,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:49:00,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 19:49:00,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:49:00,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:49:00,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:49:00,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:49:00,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:49:00,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:49:00,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:49:00,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:49:00,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:49:00,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:49:00,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:49:00,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:49:00,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:49:00,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:49:00,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:49:00,325 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:49:00,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:49:00,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:49:00,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:49:00,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:49:00,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:49:00,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:49:00,326 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:49:00,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:49:00,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:49:00,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:49:00,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:49:00,790 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:49:00,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-10-23 19:49:00,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181412b20/adc151be3061434f8b0286907181bed4/FLAG3908dfbb7 [2020-10-23 19:49:01,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:49:01,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-10-23 19:49:01,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181412b20/adc151be3061434f8b0286907181bed4/FLAG3908dfbb7 [2020-10-23 19:49:01,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181412b20/adc151be3061434f8b0286907181bed4 [2020-10-23 19:49:01,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:49:01,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:49:01,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:01,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:49:01,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:49:01,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:01" (1/1) ... [2020-10-23 19:49:01,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f935605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:01, skipping insertion in model container [2020-10-23 19:49:01,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:49:01" (1/1) ... [2020-10-23 19:49:01,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:49:01,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:49:02,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:02,209 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:49:02,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:49:02,412 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:49:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02 WrapperNode [2020-10-23 19:49:02,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:49:02,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:49:02,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:49:02,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:49:02,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... [2020-10-23 19:49:02,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:49:02,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:49:02,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:49:02,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:49:02,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:49:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:49:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:49:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:49:02,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:49:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:49:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:49:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:49:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:49:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:49:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:49:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:49:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:49:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:49:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:49:02,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:49:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:49:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:49:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 19:49:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:49:02,720 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:49:02,722 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:49:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:49:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:49:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:49:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:49:02,723 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:49:02,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:02,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:49:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:49:02,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:49:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:49:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:49:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:49:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:49:02,728 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:49:02,729 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-10-23 19:49:02,730 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:49:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 19:49:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:49:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:49:02,731 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:49:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:49:02,732 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:49:02,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:49:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:49:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:49:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:49:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:49:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:49:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:49:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:49:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:49:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:49:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:49:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:49:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:49:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:49:02,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:49:04,235 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:49:04,236 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:49:04,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:04 BoogieIcfgContainer [2020-10-23 19:49:04,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:49:04,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:49:04,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:49:04,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:49:04,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:49:01" (1/3) ... [2020-10-23 19:49:04,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec17407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:04, skipping insertion in model container [2020-10-23 19:49:04,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:49:02" (2/3) ... [2020-10-23 19:49:04,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec17407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:49:04, skipping insertion in model container [2020-10-23 19:49:04,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:49:04" (3/3) ... [2020-10-23 19:49:04,247 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-10-23 19:49:04,257 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:49:04,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:49:04,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:49:04,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:49:04,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:49:04,299 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:49:04,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:49:04,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:49:04,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:49:04,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:49:04,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:49:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-23 19:49:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 19:49:04,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:04,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:04,349 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:04,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1293318628, now seen corresponding path program 1 times [2020-10-23 19:49:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:04,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720658701] [2020-10-23 19:49:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:04,446 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,204 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:49:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:05,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720658701] [2020-10-23 19:49:05,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:05,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:49:05,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780341471] [2020-10-23 19:49:05,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:49:05,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:49:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:05,424 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 3 states. [2020-10-23 19:49:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:07,545 INFO L93 Difference]: Finished difference Result 555 states and 663 transitions. [2020-10-23 19:49:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:49:07,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 19:49:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:07,565 INFO L225 Difference]: With dead ends: 555 [2020-10-23 19:49:07,566 INFO L226 Difference]: Without dead ends: 338 [2020-10-23 19:49:07,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:49:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-23 19:49:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 293. [2020-10-23 19:49:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-23 19:49:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2020-10-23 19:49:07,821 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2020-10-23 19:49:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:07,824 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2020-10-23 19:49:07,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:49:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2020-10-23 19:49:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 19:49:07,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:07,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:07,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:49:07,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash -530215176, now seen corresponding path program 1 times [2020-10-23 19:49:07,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:07,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862151467] [2020-10-23 19:49:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:07,851 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,392 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:49:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:49:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:08,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862151467] [2020-10-23 19:49:08,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:08,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:49:08,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877999471] [2020-10-23 19:49:08,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:49:08,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:08,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:49:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:49:08,498 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 4 states. [2020-10-23 19:49:09,284 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:10,799 INFO L93 Difference]: Finished difference Result 463 states and 526 transitions. [2020-10-23 19:49:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:49:10,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 19:49:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:10,805 INFO L225 Difference]: With dead ends: 463 [2020-10-23 19:49:10,805 INFO L226 Difference]: Without dead ends: 321 [2020-10-23 19:49:10,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:49:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-23 19:49:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 283. [2020-10-23 19:49:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-23 19:49:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 309 transitions. [2020-10-23 19:49:10,918 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 309 transitions. Word has length 149 [2020-10-23 19:49:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:10,918 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 309 transitions. [2020-10-23 19:49:10,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:49:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 309 transitions. [2020-10-23 19:49:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-23 19:49:10,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:10,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:10,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:49:10,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1179588164, now seen corresponding path program 1 times [2020-10-23 19:49:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:10,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366679085] [2020-10-23 19:49:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:10,927 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,399 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:11,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 19:49:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-23 19:49:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:11,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366679085] [2020-10-23 19:49:11,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:11,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:49:11,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351888350] [2020-10-23 19:49:11,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:49:11,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:49:11,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:49:11,568 INFO L87 Difference]: Start difference. First operand 283 states and 309 transitions. Second operand 9 states. [2020-10-23 19:49:12,231 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:12,731 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:13,152 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:13,598 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:13,995 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:14,389 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:15,623 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:19,110 INFO L93 Difference]: Finished difference Result 755 states and 875 transitions. [2020-10-23 19:49:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:49:19,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-23 19:49:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:19,117 INFO L225 Difference]: With dead ends: 755 [2020-10-23 19:49:19,117 INFO L226 Difference]: Without dead ends: 587 [2020-10-23 19:49:19,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:49:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-23 19:49:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 514. [2020-10-23 19:49:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-23 19:49:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 580 transitions. [2020-10-23 19:49:19,392 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 580 transitions. Word has length 158 [2020-10-23 19:49:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:19,392 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 580 transitions. [2020-10-23 19:49:19,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:49:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 580 transitions. [2020-10-23 19:49:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 19:49:19,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:19,397 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 19:49:19,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:49:19,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1825181719, now seen corresponding path program 1 times [2020-10-23 19:49:19,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:19,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381876559] [2020-10-23 19:49:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:19,402 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:19,913 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 19:49:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:49:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:49:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:20,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381876559] [2020-10-23 19:49:20,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:20,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:49:20,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187678195] [2020-10-23 19:49:20,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:49:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:20,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:49:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:49:20,181 INFO L87 Difference]: Start difference. First operand 514 states and 580 transitions. Second operand 9 states. [2020-10-23 19:49:20,896 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:22,365 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:22,826 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:23,455 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:23,889 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:24,749 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:25,300 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:25,779 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:26,555 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:28,191 INFO L93 Difference]: Finished difference Result 1434 states and 1723 transitions. [2020-10-23 19:49:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 19:49:28,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-10-23 19:49:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:28,199 INFO L225 Difference]: With dead ends: 1434 [2020-10-23 19:49:28,200 INFO L226 Difference]: Without dead ends: 1035 [2020-10-23 19:49:28,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-23 19:49:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-23 19:49:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 873. [2020-10-23 19:49:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-10-23 19:49:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1000 transitions. [2020-10-23 19:49:28,588 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1000 transitions. Word has length 167 [2020-10-23 19:49:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:28,588 INFO L481 AbstractCegarLoop]: Abstraction has 873 states and 1000 transitions. [2020-10-23 19:49:28,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:49:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1000 transitions. [2020-10-23 19:49:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 19:49:28,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:28,593 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 19:49:28,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:49:28,594 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:28,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1691769281, now seen corresponding path program 1 times [2020-10-23 19:49:28,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:28,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527475981] [2020-10-23 19:49:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:28,599 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,077 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-23 19:49:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:49:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:49:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:29,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527475981] [2020-10-23 19:49:29,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:29,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:29,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866623832] [2020-10-23 19:49:29,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:29,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:29,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:29,370 INFO L87 Difference]: Start difference. First operand 873 states and 1000 transitions. Second operand 10 states. [2020-10-23 19:49:30,082 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:31,712 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:32,138 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:32,569 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:33,008 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:49:33,379 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:34,351 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:34,768 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:35,288 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:37,203 INFO L93 Difference]: Finished difference Result 2227 states and 2752 transitions. [2020-10-23 19:49:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 19:49:37,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-10-23 19:49:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:37,216 INFO L225 Difference]: With dead ends: 2227 [2020-10-23 19:49:37,216 INFO L226 Difference]: Without dead ends: 1469 [2020-10-23 19:49:37,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-23 19:49:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2020-10-23 19:49:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1207. [2020-10-23 19:49:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-10-23 19:49:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1399 transitions. [2020-10-23 19:49:37,685 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1399 transitions. Word has length 172 [2020-10-23 19:49:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:37,686 INFO L481 AbstractCegarLoop]: Abstraction has 1207 states and 1399 transitions. [2020-10-23 19:49:37,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1399 transitions. [2020-10-23 19:49:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:37,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:37,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:37,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:49:37,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash 938823713, now seen corresponding path program 1 times [2020-10-23 19:49:37,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:37,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677696410] [2020-10-23 19:49:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:37,697 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,174 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:38,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:49:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:49:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:38,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677696410] [2020-10-23 19:49:38,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:38,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:49:38,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136716958] [2020-10-23 19:49:38,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:49:38,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:38,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:49:38,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:49:38,434 INFO L87 Difference]: Start difference. First operand 1207 states and 1399 transitions. Second operand 10 states. [2020-10-23 19:49:40,162 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:40,563 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:40,986 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 19:49:41,407 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:41,820 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:42,196 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:43,993 INFO L93 Difference]: Finished difference Result 2703 states and 3313 transitions. [2020-10-23 19:49:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:49:43,994 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-10-23 19:49:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:44,005 INFO L225 Difference]: With dead ends: 2703 [2020-10-23 19:49:44,006 INFO L226 Difference]: Without dead ends: 1611 [2020-10-23 19:49:44,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-23 19:49:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-10-23 19:49:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1245. [2020-10-23 19:49:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-10-23 19:49:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1439 transitions. [2020-10-23 19:49:44,650 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1439 transitions. Word has length 206 [2020-10-23 19:49:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:44,650 INFO L481 AbstractCegarLoop]: Abstraction has 1245 states and 1439 transitions. [2020-10-23 19:49:44,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:49:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1439 transitions. [2020-10-23 19:49:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:44,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:44,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:44,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:49:44,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash 876494977, now seen corresponding path program 1 times [2020-10-23 19:49:44,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:44,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901634638] [2020-10-23 19:49:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:44,661 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,071 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:45,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:49:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:49:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:45,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901634638] [2020-10-23 19:49:45,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:45,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 19:49:45,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743600909] [2020-10-23 19:49:45,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 19:49:45,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:45,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 19:49:45,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:49:45,333 INFO L87 Difference]: Start difference. First operand 1245 states and 1439 transitions. Second operand 13 states. [2020-10-23 19:49:46,167 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:49:46,572 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:49:46,941 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:47,318 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:47,670 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:48,899 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:49,285 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:49,726 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:50,130 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:49:50,495 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:49:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:49:52,963 INFO L93 Difference]: Finished difference Result 2785 states and 3460 transitions. [2020-10-23 19:49:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:49:52,963 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-10-23 19:49:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:49:52,974 INFO L225 Difference]: With dead ends: 2785 [2020-10-23 19:49:52,974 INFO L226 Difference]: Without dead ends: 1655 [2020-10-23 19:49:52,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-23 19:49:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-10-23 19:49:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1269. [2020-10-23 19:49:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-10-23 19:49:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-10-23 19:49:53,633 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 206 [2020-10-23 19:49:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:49:53,634 INFO L481 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-10-23 19:49:53,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 19:49:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-10-23 19:49:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 19:49:53,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:49:53,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:49:53,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:49:53,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:49:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:49:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1278566402, now seen corresponding path program 1 times [2020-10-23 19:49:53,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:49:53,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334151711] [2020-10-23 19:49:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:49:53,643 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:49:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,025 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:49:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:49:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:49:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:49:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:49:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:49:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 19:49:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:49:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:49:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 19:49:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 19:49:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-23 19:49:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-23 19:49:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:49:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:49:54,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334151711] [2020-10-23 19:49:54,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:49:54,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:49:54,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538381294] [2020-10-23 19:49:54,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:49:54,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:49:54,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:49:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:49:54,264 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 7 states. [2020-10-23 19:49:54,910 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:49:55,629 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:50:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:50:00,023 INFO L93 Difference]: Finished difference Result 4124 states and 5143 transitions. [2020-10-23 19:50:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 19:50:00,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-23 19:50:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:50:00,041 INFO L225 Difference]: With dead ends: 4124 [2020-10-23 19:50:00,041 INFO L226 Difference]: Without dead ends: 2970 [2020-10-23 19:50:00,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:50:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-10-23 19:50:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2465. [2020-10-23 19:50:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-10-23 19:50:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 2871 transitions. [2020-10-23 19:50:01,378 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 2871 transitions. Word has length 206 [2020-10-23 19:50:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:50:01,379 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 2871 transitions. [2020-10-23 19:50:01,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:50:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 2871 transitions. [2020-10-23 19:50:01,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-23 19:50:01,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:50:01,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:50:01,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 19:50:01,386 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:50:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:50:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash -582347972, now seen corresponding path program 1 times [2020-10-23 19:50:01,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:50:01,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340055052] [2020-10-23 19:50:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:50:01,391 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:50:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:50:01,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:50:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:50:01,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:50:01,845 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:50:01,845 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:50:01,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 19:50:01,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:50:01 BoogieIcfgContainer [2020-10-23 19:50:01,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:50:01,880 INFO L168 Benchmark]: Toolchain (without parser) took 60079.84 ms. Allocated memory was 151.0 MB in the beginning and 848.3 MB in the end (delta: 697.3 MB). Free memory was 125.9 MB in the beginning and 462.5 MB in the end (delta: -336.6 MB). Peak memory consumption was 361.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:01,881 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:50:01,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.56 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 103.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:01,882 INFO L168 Benchmark]: Boogie Preprocessor took 180.04 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 99.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:01,883 INFO L168 Benchmark]: RCFGBuilder took 1641.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.0 MB in the beginning and 129.8 MB in the end (delta: -30.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:01,884 INFO L168 Benchmark]: TraceAbstraction took 57638.07 ms. Allocated memory was 181.4 MB in the beginning and 848.3 MB in the end (delta: 666.9 MB). Free memory was 129.8 MB in the beginning and 462.5 MB in the end (delta: -332.8 MB). Peak memory consumption was 334.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:50:01,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 607.56 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 103.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 180.04 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 99.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1641.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 99.0 MB in the beginning and 129.8 MB in the end (delta: -30.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57638.07 ms. Allocated memory was 181.4 MB in the beginning and 848.3 MB in the end (delta: 666.9 MB). Free memory was 129.8 MB in the beginning and 462.5 MB in the end (delta: -332.8 MB). Peak memory consumption was 334.1 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: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L591] FCALL select_helpers() [L592] FCALL select_features() [L593] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] RET, EXPR valid_product() [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L597] FCALL setup() [L598] CALL runTest() [L580] CALL test() [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) [L107] CALL waterRise() [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 [L107] RET waterRise() [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) [L117] CALL changeMethaneLevel() [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 [L117] RET changeMethaneLevel() [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L140] CALL timeShift() [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L178] CALL processEnvironment() [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L268] CALL processEnvironment__wrappee__lowWaterSensor() [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L242] CALL processEnvironment__wrappee__highWaterSensor() [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L203] CALL, EXPR isHighWaterLevel() [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L353] CALL, EXPR isHighWaterSensorDry() [L481] int retValue_acc ; [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); [L353] RET, EXPR isHighWaterSensorDry() [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] RET, EXPR isHighWaterLevel() [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L207] CALL activatePump() [L278] pumpRunning = 1 [L207] RET activatePump() [L242] RET processEnvironment__wrappee__highWaterSensor() [L268] RET processEnvironment__wrappee__lowWaterSensor() [L178] RET processEnvironment() [L184] CALL __utac_acc__Specification1_spec__1() [L610] int tmp ; [L611] int tmp___0 ; [L615] CALL, EXPR isMethaneLevelCritical() [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] RET, EXPR isMethaneLevelCritical() [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L619] CALL, EXPR isPumpRunning() [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); [L619] RET, EXPR isPumpRunning() [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) [L623] CALL __automaton_fail() [L508] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product55.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 668 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 46.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2230 SDtfs, 4121 SDslu, 4099 SDs, 0 SdLazy, 9195 SolverSat, 1348 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2465occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1837 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...