/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:24:17,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:24:17,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:24:17,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:24:17,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:24:17,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:24:17,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:24:17,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:24:17,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:24:17,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:24:17,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:24:17,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:24:17,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:24:17,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:24:17,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:24:17,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:24:17,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:24:17,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:24:17,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:24:17,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:24:17,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:24:17,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:24:17,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:24:17,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:24:17,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:24:17,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:24:17,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:24:17,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:24:17,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:24:17,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:24:17,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:24:17,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:24:17,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:24:17,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:24:17,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:24:17,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:24:17,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:24:17,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:24:17,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:24:17,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:24:17,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:24:17,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:24:17,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:24:17,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:24:17,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:24:17,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:24:17,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:24:17,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:24:17,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:24:17,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:24:17,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:24:17,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:24:17,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:24:17,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:24:17,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:24:17,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:24:17,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:24:17,405 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:24:17,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:24:17,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:24:17,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:24:17,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:24:17,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:24:17,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:24:17,407 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:24:17,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:24:17,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:24:17,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:24:17,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:24:17,858 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:24:17,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-09-04 15:24:17,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94ed0390/66fd3ade50604ed8b5e5b13c7c87dbd0/FLAG0dd6f6d99 [2020-09-04 15:24:18,581 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:24:18,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-09-04 15:24:18,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94ed0390/66fd3ade50604ed8b5e5b13c7c87dbd0/FLAG0dd6f6d99 [2020-09-04 15:24:18,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c94ed0390/66fd3ade50604ed8b5e5b13c7c87dbd0 [2020-09-04 15:24:18,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:24:18,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:24:18,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:24:18,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:24:18,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:24:18,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:24:18" (1/1) ... [2020-09-04 15:24:18,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fd97d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:18, skipping insertion in model container [2020-09-04 15:24:18,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:24:18" (1/1) ... [2020-09-04 15:24:18,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:24:18,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:24:19,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:24:19,397 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:24:19,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:24:19,571 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:24:19,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19 WrapperNode [2020-09-04 15:24:19,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:24:19,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:24:19,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:24:19,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:24:19,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... [2020-09-04 15:24:19,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:24:19,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:24:19,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:24:19,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:24:19,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:24:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:24:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:24:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:24:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:24:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:24:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:24:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:24:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:24:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:24:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:24:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:24:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:24:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:24:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:24:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:24:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:24:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:24:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:24:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:24:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:24:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:24:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:24:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:24:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:24:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:24:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:24:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:24:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:24:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:24:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:24:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:24:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:24:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:24:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:24:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:24:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:24:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:24:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:24:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:24:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:24:20,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:24:20,933 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:24:20,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:24:20 BoogieIcfgContainer [2020-09-04 15:24:20,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:24:20,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:24:20,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:24:20,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:24:20,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:24:18" (1/3) ... [2020-09-04 15:24:20,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7057990e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:24:20, skipping insertion in model container [2020-09-04 15:24:20,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:24:19" (2/3) ... [2020-09-04 15:24:20,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7057990e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:24:20, skipping insertion in model container [2020-09-04 15:24:20,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:24:20" (3/3) ... [2020-09-04 15:24:20,950 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-09-04 15:24:20,961 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:24:20,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:24:20,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:24:21,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:24:21,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:24:21,021 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:24:21,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:24:21,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:24:21,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:24:21,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:24:21,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:24:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-04 15:24:21,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:24:21,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:21,070 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] [2020-09-04 15:24:21,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash -578069207, now seen corresponding path program 1 times [2020-09-04 15:24:21,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:21,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860496826] [2020-09-04 15:24:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:21,171 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:21,873 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:24:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:24:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:24:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:24:22,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860496826] [2020-09-04 15:24:22,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:22,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:24:22,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946415647] [2020-09-04 15:24:22,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:24:22,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:24:22,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:24:22,141 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2020-09-04 15:24:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:23,487 INFO L93 Difference]: Finished difference Result 470 states and 558 transitions. [2020-09-04 15:24:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:24:23,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:24:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:23,509 INFO L225 Difference]: With dead ends: 470 [2020-09-04 15:24:23,510 INFO L226 Difference]: Without dead ends: 293 [2020-09-04 15:24:23,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:24:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-04 15:24:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 251. [2020-09-04 15:24:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-04 15:24:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 271 transitions. [2020-09-04 15:24:23,659 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 271 transitions. Word has length 153 [2020-09-04 15:24:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:23,660 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 271 transitions. [2020-09-04 15:24:23,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:24:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 271 transitions. [2020-09-04 15:24:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:24:23,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:23,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:24:23,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:24:23,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1405160622, now seen corresponding path program 1 times [2020-09-04 15:24:23,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:23,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253733318] [2020-09-04 15:24:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:23,672 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,114 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:24:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:24:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:24:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:24:24,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253733318] [2020-09-04 15:24:24,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:24,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:24:24,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974383097] [2020-09-04 15:24:24,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:24:24,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:24,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:24:24,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:24:24,256 INFO L87 Difference]: Start difference. First operand 251 states and 271 transitions. Second operand 4 states. [2020-09-04 15:24:24,868 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:24:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:25,809 INFO L93 Difference]: Finished difference Result 374 states and 419 transitions. [2020-09-04 15:24:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:24:25,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:24:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:25,815 INFO L225 Difference]: With dead ends: 374 [2020-09-04 15:24:25,815 INFO L226 Difference]: Without dead ends: 276 [2020-09-04 15:24:25,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:24:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-04 15:24:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 241. [2020-09-04 15:24:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-04 15:24:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 258 transitions. [2020-09-04 15:24:25,923 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 258 transitions. Word has length 154 [2020-09-04 15:24:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:25,923 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 258 transitions. [2020-09-04 15:24:25,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:24:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 258 transitions. [2020-09-04 15:24:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:24:25,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:25,927 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] [2020-09-04 15:24:25,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:24:25,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:25,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1087460767, now seen corresponding path program 1 times [2020-09-04 15:24:25,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:25,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837899409] [2020-09-04 15:24:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:25,931 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,326 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:24:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:24:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:24:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:24:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:24:26,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837899409] [2020-09-04 15:24:26,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:26,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:24:26,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590653638] [2020-09-04 15:24:26,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:24:26,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:26,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:24:26,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:24:26,528 INFO L87 Difference]: Start difference. First operand 241 states and 258 transitions. Second operand 10 states. [2020-09-04 15:24:27,114 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:27,483 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:24:27,792 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:24:28,100 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:28,431 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:28,699 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:29,671 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:24:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:32,052 INFO L93 Difference]: Finished difference Result 665 states and 770 transitions. [2020-09-04 15:24:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:24:32,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:24:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:32,059 INFO L225 Difference]: With dead ends: 665 [2020-09-04 15:24:32,059 INFO L226 Difference]: Without dead ends: 534 [2020-09-04 15:24:32,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:24:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-04 15:24:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 431. [2020-09-04 15:24:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-04 15:24:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 476 transitions. [2020-09-04 15:24:32,187 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 476 transitions. Word has length 167 [2020-09-04 15:24:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:32,188 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 476 transitions. [2020-09-04 15:24:32,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:24:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 476 transitions. [2020-09-04 15:24:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:24:32,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:32,192 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] [2020-09-04 15:24:32,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:24:32,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash 364120366, now seen corresponding path program 1 times [2020-09-04 15:24:32,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:32,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137036345] [2020-09-04 15:24:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:32,196 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,596 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:24:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:24:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:24:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:24:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:24:32,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137036345] [2020-09-04 15:24:32,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:32,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:24:32,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388820539] [2020-09-04 15:24:32,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:24:32,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:24:32,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:24:32,830 INFO L87 Difference]: Start difference. First operand 431 states and 476 transitions. Second operand 9 states. [2020-09-04 15:24:33,497 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:35,502 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:35,780 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:36,109 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:36,457 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:36,714 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:24:37,050 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:37,361 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:24:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:38,181 INFO L93 Difference]: Finished difference Result 1147 states and 1371 transitions. [2020-09-04 15:24:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:24:38,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:24:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:38,189 INFO L225 Difference]: With dead ends: 1147 [2020-09-04 15:24:38,189 INFO L226 Difference]: Without dead ends: 826 [2020-09-04 15:24:38,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:24:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-09-04 15:24:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 727. [2020-09-04 15:24:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-04 15:24:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 823 transitions. [2020-09-04 15:24:38,519 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 823 transitions. Word has length 172 [2020-09-04 15:24:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:38,520 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 823 transitions. [2020-09-04 15:24:38,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:24:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 823 transitions. [2020-09-04 15:24:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:24:38,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:38,526 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] [2020-09-04 15:24:38,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:24:38,527 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:38,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1560064113, now seen corresponding path program 1 times [2020-09-04 15:24:38,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:38,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997917064] [2020-09-04 15:24:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:38,530 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,847 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:24:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:24:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:24:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:24:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:24:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:24:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:24:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:24:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:24:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:24:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:38,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-04 15:24:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:24:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:24:39,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997917064] [2020-09-04 15:24:39,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:24:39,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:24:39,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836980857] [2020-09-04 15:24:39,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:24:39,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:24:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:24:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:24:39,007 INFO L87 Difference]: Start difference. First operand 727 states and 823 transitions. Second operand 6 states. [2020-09-04 15:24:39,469 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:24:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:24:41,252 INFO L93 Difference]: Finished difference Result 1707 states and 2020 transitions. [2020-09-04 15:24:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:24:41,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-04 15:24:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:24:41,259 INFO L225 Difference]: With dead ends: 1707 [2020-09-04 15:24:41,260 INFO L226 Difference]: Without dead ends: 1090 [2020-09-04 15:24:41,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:24:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-09-04 15:24:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1010. [2020-09-04 15:24:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-09-04 15:24:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1147 transitions. [2020-09-04 15:24:41,648 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1147 transitions. Word has length 177 [2020-09-04 15:24:41,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:24:41,649 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1147 transitions. [2020-09-04 15:24:41,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:24:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1147 transitions. [2020-09-04 15:24:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:24:41,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:24:41,653 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] [2020-09-04 15:24:41,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:24:41,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:24:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:24:41,654 INFO L82 PathProgramCache]: Analyzing trace with hash -254126211, now seen corresponding path program 1 times [2020-09-04 15:24:41,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:24:41,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913413023] [2020-09-04 15:24:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:24:41,656 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:24:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:24:41,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:24:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:24:41,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:24:42,008 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:24:42,009 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:24:42,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:24:42,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:24:42 BoogieIcfgContainer [2020-09-04 15:24:42,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:24:42,038 INFO L168 Benchmark]: Toolchain (without parser) took 23146.45 ms. Allocated memory was 138.9 MB in the beginning and 655.9 MB in the end (delta: 516.9 MB). Free memory was 102.6 MB in the beginning and 516.2 MB in the end (delta: -413.6 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:42,039 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:24:42,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 169.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:42,041 INFO L168 Benchmark]: Boogie Preprocessor took 99.35 ms. Allocated memory is still 202.4 MB. Free memory was 169.4 MB in the beginning and 164.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:42,042 INFO L168 Benchmark]: RCFGBuilder took 1268.04 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 174.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:42,043 INFO L168 Benchmark]: TraceAbstraction took 21094.39 ms. Allocated memory was 235.4 MB in the beginning and 655.9 MB in the end (delta: 420.5 MB). Free memory was 174.2 MB in the beginning and 516.2 MB in the end (delta: -342.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:24:42,047 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 169.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.35 ms. Allocated memory is still 202.4 MB. Free memory was 169.4 MB in the beginning and 164.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1268.04 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 174.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21094.39 ms. Allocated memory was 235.4 MB in the beginning and 655.9 MB in the end (delta: 420.5 MB). Free memory was 174.2 MB in the beginning and 516.2 MB in the end (delta: -342.0 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; [L845] int retValue_acc ; [L846] int tmp ; [L850] FCALL select_helpers() [L851] FCALL select_features() [L852] CALL, EXPR valid_product() [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L852] RET, EXPR valid_product() [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) [L856] FCALL setup() [L857] CALL runTest() [L836] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L693] COND TRUE waterLevel < 2 [L694] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L655] CALL stopSystem() [L582] COND FALSE !(\read(pumpRunning)) [L589] systemActive = 0 [L655] RET stopSystem() [L662] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND FALSE !(\read(systemActive)) [L449] CALL __utac_acc__Specification3_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L910] CALL, EXPR isMethaneLevelCritical() [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); [L910] RET, EXPR isMethaneLevelCritical() [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L916] CALL, EXPR getWaterLevel() [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L920] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) [L926] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1196 SDtfs, 2275 SDslu, 1565 SDs, 0 SdLazy, 3335 SolverSat, 813 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1010occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 359 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...