/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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 23:44:50,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 23:44:50,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 23:44:50,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 23:44:50,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 23:44:50,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 23:44:50,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 23:44:50,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 23:44:50,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 23:44:50,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 23:44:50,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 23:44:50,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 23:44:50,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 23:44:50,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 23:44:50,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 23:44:50,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 23:44:50,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 23:44:50,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 23:44:50,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 23:44:50,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 23:44:50,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 23:44:50,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 23:44:50,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 23:44:50,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 23:44:50,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 23:44:50,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 23:44:50,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 23:44:50,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 23:44:50,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 23:44:50,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 23:44:50,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 23:44:50,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 23:44:50,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 23:44:50,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 23:44:50,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 23:44:50,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 23:44:50,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 23:44:50,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 23:44:50,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 23:44:50,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 23:44:50,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 23:44:50,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-06 23:44:50,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 23:44:50,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 23:44:50,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 23:44:50,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 23:44:50,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 23:44:50,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 23:44:50,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 23:44:50,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 23:44:50,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 23:44:50,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 23:44:50,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 23:44:50,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 23:44:50,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 23:44:50,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 23:44:50,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 23:44:50,870 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-06 23:44:50,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 23:44:50,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 23:44:50,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 23:44:50,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 23:44:50,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-06 23:44:50,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 23:44:50,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 23:44:51,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 23:44:51,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 23:44:51,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 23:44:51,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 23:44:51,374 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 23:44:51,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-11-06 23:44:51,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cd9567d/91ddf79add1c4c8ead25f95c59a6d0b8/FLAG0efb35cc7 [2020-11-06 23:44:52,217 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 23:44:52,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-11-06 23:44:52,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cd9567d/91ddf79add1c4c8ead25f95c59a6d0b8/FLAG0efb35cc7 [2020-11-06 23:44:52,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cd9567d/91ddf79add1c4c8ead25f95c59a6d0b8 [2020-11-06 23:44:52,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 23:44:52,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 23:44:52,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:52,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 23:44:52,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 23:44:52,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:52" (1/1) ... [2020-11-06 23:44:52,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72180d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:52, skipping insertion in model container [2020-11-06 23:44:52,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:44:52" (1/1) ... [2020-11-06 23:44:52,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 23:44:52,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 23:44:53,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:53,063 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 23:44:53,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 23:44:53,257 INFO L208 MainTranslator]: Completed translation [2020-11-06 23:44:53,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53 WrapperNode [2020-11-06 23:44:53,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 23:44:53,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 23:44:53,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 23:44:53,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 23:44:53,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (1/1) ... [2020-11-06 23:44:53,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 23:44:53,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 23:44:53,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 23:44:53,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 23:44:53,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (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 [2020-11-06 23:44:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 23:44:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 23:44:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 23:44:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-11-06 23:44:53,457 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-11-06 23:44:53,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-11-06 23:44:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-11-06 23:44:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-11-06 23:44:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-11-06 23:44:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-11-06 23:44:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-11-06 23:44:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-11-06 23:44:53,478 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-11-06 23:44:53,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-11-06 23:44:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-11-06 23:44:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-11-06 23:44:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:53,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-11-06 23:44:53,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-11-06 23:44:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-11-06 23:44:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-11-06 23:44:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-11-06 23:44:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-11-06 23:44:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-11-06 23:44:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 23:44:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-11-06 23:44:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-11-06 23:44:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-11-06 23:44:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-11-06 23:44:53,490 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-11-06 23:44:53,492 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-11-06 23:44:53,492 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-11-06 23:44:53,492 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-11-06 23:44:53,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-11-06 23:44:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-11-06 23:44:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-11-06 23:44:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-11-06 23:44:53,495 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-11-06 23:44:53,496 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-11-06 23:44:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-11-06 23:44:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 23:44:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 23:44:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-11-06 23:44:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-11-06 23:44:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-11-06 23:44:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-11-06 23:44:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-11-06 23:44:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-11-06 23:44:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 23:44:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 23:44:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 23:44:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 23:44:54,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 23:44:54,917 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 23:44:54,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:54 BoogieIcfgContainer [2020-11-06 23:44:54,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 23:44:54,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 23:44:54,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 23:44:54,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 23:44:54,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:44:52" (1/3) ... [2020-11-06 23:44:54,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79139c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:54, skipping insertion in model container [2020-11-06 23:44:54,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:44:53" (2/3) ... [2020-11-06 23:44:54,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79139c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:44:54, skipping insertion in model container [2020-11-06 23:44:54,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:44:54" (3/3) ... [2020-11-06 23:44:54,936 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-11-06 23:44:54,953 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-06 23:44:54,958 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-06 23:44:54,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-06 23:44:55,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 23:44:55,009 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 23:44:55,009 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-06 23:44:55,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 23:44:55,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 23:44:55,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 23:44:55,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 23:44:55,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 23:44:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-11-06 23:44:55,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-06 23:44:55,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:55,055 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] [2020-11-06 23:44:55,056 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]=== [2020-11-06 23:44:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash 201630041, now seen corresponding path program 1 times [2020-11-06 23:44:55,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:55,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869518927] [2020-11-06 23:44:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:55,154 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,141 WARN L194 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:44:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-06 23:44:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:56,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869518927] [2020-11-06 23:44:56,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:56,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 23:44:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619810049] [2020-11-06 23:44:56,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 23:44:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:56,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 23:44:56,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:56,387 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-11-06 23:44:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:44:58,091 INFO L93 Difference]: Finished difference Result 458 states and 545 transitions. [2020-11-06 23:44:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 23:44:58,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-06 23:44:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:44:58,131 INFO L225 Difference]: With dead ends: 458 [2020-11-06 23:44:58,131 INFO L226 Difference]: Without dead ends: 288 [2020-11-06 23:44:58,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 23:44:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-11-06 23:44:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 246. [2020-11-06 23:44:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-11-06 23:44:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 265 transitions. [2020-11-06 23:44:58,335 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 265 transitions. Word has length 148 [2020-11-06 23:44:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:44:58,338 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 265 transitions. [2020-11-06 23:44:58,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 23:44:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 265 transitions. [2020-11-06 23:44:58,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-06 23:44:58,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:44:58,356 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] [2020-11-06 23:44:58,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 23:44:58,358 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]=== [2020-11-06 23:44:58,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:44:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1206683557, now seen corresponding path program 1 times [2020-11-06 23:44:58,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:44:58,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954878200] [2020-11-06 23:44:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:44:58,365 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:44:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,917 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:44:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:44:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:44:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:44:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:44:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:44:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-11-06 23:44:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-11-06 23:44:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:44:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:44:59,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954878200] [2020-11-06 23:44:59,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:44:59,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 23:44:59,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169926092] [2020-11-06 23:44:59,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 23:44:59,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:44:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 23:44:59,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 23:44:59,016 INFO L87 Difference]: Start difference. First operand 246 states and 265 transitions. Second operand 4 states. [2020-11-06 23:44:59,854 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:00,895 INFO L93 Difference]: Finished difference Result 359 states and 402 transitions. [2020-11-06 23:45:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 23:45:00,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-11-06 23:45:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:00,900 INFO L225 Difference]: With dead ends: 359 [2020-11-06 23:45:00,900 INFO L226 Difference]: Without dead ends: 271 [2020-11-06 23:45:00,902 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 [2020-11-06 23:45:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-06 23:45:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 236. [2020-11-06 23:45:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-11-06 23:45:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 252 transitions. [2020-11-06 23:45:00,990 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 252 transitions. Word has length 149 [2020-11-06 23:45:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:00,991 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 252 transitions. [2020-11-06 23:45:00,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 23:45:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 252 transitions. [2020-11-06 23:45:00,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-06 23:45:00,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:00,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:00,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 23:45:00,994 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]=== [2020-11-06 23:45:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:00,995 INFO L82 PathProgramCache]: Analyzing trace with hash 135240494, now seen corresponding path program 1 times [2020-11-06 23:45:00,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:00,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423596623] [2020-11-06 23:45:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:00,999 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,596 WARN L194 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:01,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-06 23:45:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-06 23:45:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:45:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:01,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423596623] [2020-11-06 23:45:01,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:01,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:01,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081844764] [2020-11-06 23:45:01,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:01,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:01,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:01,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:01,879 INFO L87 Difference]: Start difference. First operand 236 states and 252 transitions. Second operand 10 states. [2020-11-06 23:45:02,552 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:03,035 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:03,461 WARN L194 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-06 23:45:03,867 WARN L194 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:04,242 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:04,617 WARN L194 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:05,780 WARN L194 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:08,267 INFO L93 Difference]: Finished difference Result 630 states and 731 transitions. [2020-11-06 23:45:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:45:08,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-11-06 23:45:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:08,279 INFO L225 Difference]: With dead ends: 630 [2020-11-06 23:45:08,279 INFO L226 Difference]: Without dead ends: 509 [2020-11-06 23:45:08,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:45:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-11-06 23:45:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 404. [2020-11-06 23:45:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-11-06 23:45:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 446 transitions. [2020-11-06 23:45:08,507 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 446 transitions. Word has length 162 [2020-11-06 23:45:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:08,508 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 446 transitions. [2020-11-06 23:45:08,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 446 transitions. [2020-11-06 23:45:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-06 23:45:08,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:08,512 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] [2020-11-06 23:45:08,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 23:45:08,513 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]=== [2020-11-06 23:45:08,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:08,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1048228152, now seen corresponding path program 1 times [2020-11-06 23:45:08,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:08,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191394626] [2020-11-06 23:45:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:08,524 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,035 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:09,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-06 23:45:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-11-06 23:45:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-11-06 23:45:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:09,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191394626] [2020-11-06 23:45:09,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:09,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 23:45:09,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940168596] [2020-11-06 23:45:09,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 23:45:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 23:45:09,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 23:45:09,237 INFO L87 Difference]: Start difference. First operand 404 states and 446 transitions. Second operand 9 states. [2020-11-06 23:45:09,988 WARN L194 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:11,673 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:12,077 WARN L194 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:12,520 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:12,910 WARN L194 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:13,296 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:13,661 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:14,043 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:14,628 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:15,859 INFO L93 Difference]: Finished difference Result 1091 states and 1303 transitions. [2020-11-06 23:45:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 23:45:15,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-11-06 23:45:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:15,868 INFO L225 Difference]: With dead ends: 1091 [2020-11-06 23:45:15,868 INFO L226 Difference]: Without dead ends: 802 [2020-11-06 23:45:15,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-06 23:45:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-11-06 23:45:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 653. [2020-11-06 23:45:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-11-06 23:45:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 732 transitions. [2020-11-06 23:45:16,189 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 732 transitions. Word has length 167 [2020-11-06 23:45:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:16,190 INFO L481 AbstractCegarLoop]: Abstraction has 653 states and 732 transitions. [2020-11-06 23:45:16,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 23:45:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 732 transitions. [2020-11-06 23:45:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-06 23:45:16,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:16,194 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] [2020-11-06 23:45:16,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 23:45:16,194 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]=== [2020-11-06 23:45:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:16,195 INFO L82 PathProgramCache]: Analyzing trace with hash -437705597, now seen corresponding path program 1 times [2020-11-06 23:45:16,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:16,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775146423] [2020-11-06 23:45:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:16,198 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,633 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-11-06 23:45:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-06 23:45:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-06 23:45:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:16,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775146423] [2020-11-06 23:45:16,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:16,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 23:45:16,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622586043] [2020-11-06 23:45:16,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 23:45:16,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 23:45:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 23:45:16,818 INFO L87 Difference]: Start difference. First operand 653 states and 732 transitions. Second operand 10 states. [2020-11-06 23:45:17,508 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:19,173 WARN L194 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:19,601 WARN L194 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:20,027 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:20,445 WARN L194 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-11-06 23:45:20,845 WARN L194 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:21,663 WARN L194 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:22,084 WARN L194 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:22,588 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:23,841 INFO L93 Difference]: Finished difference Result 1726 states and 2100 transitions. [2020-11-06 23:45:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 23:45:23,841 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-11-06 23:45:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:23,851 INFO L225 Difference]: With dead ends: 1726 [2020-11-06 23:45:23,851 INFO L226 Difference]: Without dead ends: 1188 [2020-11-06 23:45:23,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-06 23:45:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2020-11-06 23:45:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 943. [2020-11-06 23:45:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-11-06 23:45:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1079 transitions. [2020-11-06 23:45:24,393 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1079 transitions. Word has length 172 [2020-11-06 23:45:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:24,394 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1079 transitions. [2020-11-06 23:45:24,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 23:45:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1079 transitions. [2020-11-06 23:45:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:45:24,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:24,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:24,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 23:45:24,408 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]=== [2020-11-06 23:45:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1498653855, now seen corresponding path program 1 times [2020-11-06 23:45:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:24,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810806009] [2020-11-06 23:45:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:24,420 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,819 WARN L194 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:24,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:45:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:25,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810806009] [2020-11-06 23:45:25,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:25,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-06 23:45:25,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721569240] [2020-11-06 23:45:25,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-06 23:45:25,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:25,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-06 23:45:25,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-11-06 23:45:25,078 INFO L87 Difference]: Start difference. First operand 943 states and 1079 transitions. Second operand 14 states. [2020-11-06 23:45:25,923 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:26,312 WARN L194 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:26,699 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:27,080 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:27,436 WARN L194 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:28,681 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:29,056 WARN L194 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:29,472 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:29,926 WARN L194 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:30,303 WARN L194 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:32,936 INFO L93 Difference]: Finished difference Result 2387 states and 3047 transitions. [2020-11-06 23:45:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-06 23:45:32,936 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2020-11-06 23:45:32,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:32,949 INFO L225 Difference]: With dead ends: 2387 [2020-11-06 23:45:32,949 INFO L226 Difference]: Without dead ends: 1559 [2020-11-06 23:45:32,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-11-06 23:45:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-11-06 23:45:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 973. [2020-11-06 23:45:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-11-06 23:45:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1109 transitions. [2020-11-06 23:45:33,336 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1109 transitions. Word has length 200 [2020-11-06 23:45:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:33,336 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1109 transitions. [2020-11-06 23:45:33,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-06 23:45:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1109 transitions. [2020-11-06 23:45:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:45:33,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:33,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:33,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-06 23:45:33,343 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]=== [2020-11-06 23:45:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:33,344 INFO L82 PathProgramCache]: Analyzing trace with hash -358860031, now seen corresponding path program 1 times [2020-11-06 23:45:33,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:33,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157682927] [2020-11-06 23:45:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:33,347 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,693 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:45:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:33,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157682927] [2020-11-06 23:45:33,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:33,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 23:45:33,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034592132] [2020-11-06 23:45:33,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 23:45:33,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:33,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 23:45:33,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-11-06 23:45:33,910 INFO L87 Difference]: Start difference. First operand 973 states and 1109 transitions. Second operand 11 states. [2020-11-06 23:45:35,609 WARN L194 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-11-06 23:45:36,046 WARN L194 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-11-06 23:45:36,506 WARN L194 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-11-06 23:45:36,941 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:37,345 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-11-06 23:45:37,714 WARN L194 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-06 23:45:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:39,816 INFO L93 Difference]: Finished difference Result 2429 states and 3030 transitions. [2020-11-06 23:45:39,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-06 23:45:39,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-11-06 23:45:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:39,828 INFO L225 Difference]: With dead ends: 2429 [2020-11-06 23:45:39,828 INFO L226 Difference]: Without dead ends: 1571 [2020-11-06 23:45:39,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-11-06 23:45:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2020-11-06 23:45:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1005. [2020-11-06 23:45:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-11-06 23:45:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1141 transitions. [2020-11-06 23:45:40,362 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1141 transitions. Word has length 200 [2020-11-06 23:45:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:40,362 INFO L481 AbstractCegarLoop]: Abstraction has 1005 states and 1141 transitions. [2020-11-06 23:45:40,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 23:45:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1141 transitions. [2020-11-06 23:45:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-11-06 23:45:40,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:40,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:40,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-06 23:45:40,367 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]=== [2020-11-06 23:45:40,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:40,368 INFO L82 PathProgramCache]: Analyzing trace with hash 665190750, now seen corresponding path program 1 times [2020-11-06 23:45:40,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:40,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842448928] [2020-11-06 23:45:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:40,371 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,760 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-11-06 23:45:40,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 23:45:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-11-06 23:45:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-06 23:45:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-11-06 23:45:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-06 23:45:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-06 23:45:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-11-06 23:45:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-06 23:45:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 23:45:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 23:45:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-06 23:45:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-06 23:45:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-06 23:45:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 23:45:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 23:45:40,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842448928] [2020-11-06 23:45:40,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 23:45:40,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 23:45:40,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847746491] [2020-11-06 23:45:40,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 23:45:40,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-06 23:45:40,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 23:45:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-06 23:45:40,955 INFO L87 Difference]: Start difference. First operand 1005 states and 1141 transitions. Second operand 8 states. [2020-11-06 23:45:41,682 WARN L194 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:42,515 WARN L194 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-11-06 23:45:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 23:45:47,947 INFO L93 Difference]: Finished difference Result 3935 states and 5024 transitions. [2020-11-06 23:45:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-06 23:45:47,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-11-06 23:45:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 23:45:47,970 INFO L225 Difference]: With dead ends: 3935 [2020-11-06 23:45:47,970 INFO L226 Difference]: Without dead ends: 3045 [2020-11-06 23:45:47,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-11-06 23:45:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2020-11-06 23:45:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2145. [2020-11-06 23:45:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2020-11-06 23:45:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2469 transitions. [2020-11-06 23:45:48,994 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2469 transitions. Word has length 200 [2020-11-06 23:45:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 23:45:48,994 INFO L481 AbstractCegarLoop]: Abstraction has 2145 states and 2469 transitions. [2020-11-06 23:45:48,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 23:45:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2469 transitions. [2020-11-06 23:45:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-11-06 23:45:49,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 23:45:49,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 23:45:49,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-06 23:45:49,002 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]=== [2020-11-06 23:45:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 23:45:49,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1804660302, now seen corresponding path program 1 times [2020-11-06 23:45:49,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-06 23:45:49,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210743403] [2020-11-06 23:45:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 23:45:49,007 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-06 23:45:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:49,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 23:45:49,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 23:45:49,426 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-06 23:45:49,426 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 23:45:49,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-06 23:45:49,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:45:49 BoogieIcfgContainer [2020-11-06 23:45:49,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 23:45:49,473 INFO L168 Benchmark]: Toolchain (without parser) took 56920.88 ms. Allocated memory was 158.3 MB in the beginning and 828.4 MB in the end (delta: 670.0 MB). Free memory was 134.0 MB in the beginning and 401.1 MB in the end (delta: -267.1 MB). Peak memory consumption was 404.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:49,480 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 23:45:49,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.34 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 112.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:49,491 INFO L168 Benchmark]: Boogie Preprocessor took 108.50 ms. Allocated memory is still 158.3 MB. Free memory was 112.9 MB in the beginning and 108.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:49,491 INFO L168 Benchmark]: RCFGBuilder took 1556.55 ms. Allocated memory is still 158.3 MB. Free memory was 108.9 MB in the beginning and 127.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:49,492 INFO L168 Benchmark]: TraceAbstraction took 54544.18 ms. Allocated memory was 158.3 MB in the beginning and 828.4 MB in the end (delta: 670.0 MB). Free memory was 127.1 MB in the beginning and 401.1 MB in the end (delta: -274.0 MB). Peak memory consumption was 395.5 MB. Max. memory is 8.0 GB. [2020-11-06 23:45:49,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 696.34 ms. Allocated memory is still 158.3 MB. Free memory was 133.2 MB in the beginning and 112.9 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.50 ms. Allocated memory is still 158.3 MB. Free memory was 112.9 MB in the beginning and 108.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1556.55 ms. Allocated memory is still 158.3 MB. Free memory was 108.9 MB in the beginning and 127.6 MB in the end (delta: -18.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 54544.18 ms. Allocated memory was 158.3 MB in the beginning and 828.4 MB in the end (delta: 670.0 MB). Free memory was 127.1 MB in the beginning and 401.1 MB in the end (delta: -274.0 MB). Peak memory consumption was 395.5 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: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L241] int waterLevel = 1; [L242] int methaneLevelCritical = 0; [L612] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L835] int cleanupTimeShifts = 4; [L908] int retValue_acc ; [L909] int tmp ; [L913] FCALL select_helpers() [L914] FCALL select_features() [L915] CALL, EXPR valid_product() [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); [L915] RET, EXPR valid_product() [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) [L919] FCALL setup() [L920] CALL runTest() [L902] CALL test() [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 [L346] COND TRUE 1 [L348] COND TRUE splverifierCounter < 4 [L354] tmp = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp) [L358] CALL waterRise() [L259] COND TRUE waterLevel < 2 [L260] waterLevel = waterLevel + 1 [L358] RET waterRise() [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND TRUE \read(tmp___0) [L368] CALL changeMethaneLevel() [L271] COND FALSE !(\read(methaneLevelCritical)) [L274] methaneLevelCritical = 1 [L368] RET changeMethaneLevel() [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L378] CALL startSystem() [L233] systemActive = 1 [L378] RET startSystem() [L393] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND TRUE \read(systemActive) [L79] CALL processEnvironment() [L99] int tmp ; [L102] COND TRUE ! pumpRunning [L104] CALL, EXPR isHighWaterLevel() [L196] int retValue_acc ; [L197] int tmp ; [L198] int tmp___0 ; [L202] CALL, EXPR isHighWaterSensorDry() [L321] int retValue_acc ; [L324] COND FALSE !(waterLevel < 2) [L328] retValue_acc = 0 [L329] return (retValue_acc); [L202] RET, EXPR isHighWaterSensorDry() [L202] tmp = isHighWaterSensorDry() [L204] COND FALSE !(\read(tmp)) [L207] tmp___0 = 1 [L209] retValue_acc = tmp___0 [L210] return (retValue_acc); [L104] RET, EXPR isHighWaterLevel() [L104] tmp = isHighWaterLevel() [L106] COND TRUE \read(tmp) [L108] CALL activatePump() [L127] pumpRunning = 1 [L108] RET activatePump() [L79] RET processEnvironment() [L85] CALL __utac_acc__Specification1_spec__1() [L810] int tmp ; [L811] int tmp___0 ; [L815] CALL, EXPR isMethaneLevelCritical() [L280] int retValue_acc ; [L283] retValue_acc = methaneLevelCritical [L284] return (retValue_acc); [L815] RET, EXPR isMethaneLevelCritical() [L815] tmp = isMethaneLevelCritical() [L817] COND TRUE \read(tmp) [L819] CALL, EXPR isPumpRunning() [L151] int retValue_acc ; [L154] retValue_acc = pumpRunning [L155] return (retValue_acc); [L819] RET, EXPR isPumpRunning() [L819] tmp___0 = isPumpRunning() [L821] COND TRUE \read(tmp___0) [L823] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec1_product36.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 629 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 44.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1919 SDtfs, 4141 SDslu, 4366 SDs, 0 SdLazy, 8299 SolverSat, 1299 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2145occurred 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: 3.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 2628 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...