/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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:11,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:11,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:11,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:11,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:11,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:11,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:11,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:11,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:11,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:11,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:11,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:11,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:11,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:11,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:11,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:11,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:11,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:11,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:11,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:11,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:11,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:11,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:11,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:11,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:11,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:11,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:11,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:11,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:11,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:11,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:11,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:11,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:11,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:11,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:11,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:11,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:11,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:11,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:11,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:11,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:11,816 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 15:23:11,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:11,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:11,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:11,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:11,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:11,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:11,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:11,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:11,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:11,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:11,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:11,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:11,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:11,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:11,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:11,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:11,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:11,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:11,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:11,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:11,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:11,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:11,841 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:12,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:12,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:12,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:12,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:12,322 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:12,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-09-04 15:23:12,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccd4f91f/1b5a2472da994ffa80eafbf38f9d8f83/FLAGd4683d6d7 [2020-09-04 15:23:12,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:12,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-09-04 15:23:12,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccd4f91f/1b5a2472da994ffa80eafbf38f9d8f83/FLAGd4683d6d7 [2020-09-04 15:23:13,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccd4f91f/1b5a2472da994ffa80eafbf38f9d8f83 [2020-09-04 15:23:13,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:13,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:13,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:13,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:13,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:13,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:13" (1/1) ... [2020-09-04 15:23:13,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc06ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:13, skipping insertion in model container [2020-09-04 15:23:13,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:13" (1/1) ... [2020-09-04 15:23:13,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:13,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:13,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:13,811 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:14,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:14,045 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:14,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14 WrapperNode [2020-09-04 15:23:14,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:14,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:14,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:14,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:14,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (1/1) ... [2020-09-04 15:23:14,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:14,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:14,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:14,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:14,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (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 15:23:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:23:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:23:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:23:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:23:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:14,235 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:23:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:23:14,236 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:14,237 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:14,238 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:14,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:15,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:15,388 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:15,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:15 BoogieIcfgContainer [2020-09-04 15:23:15,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:15,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:15,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:15,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:15,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:13" (1/3) ... [2020-09-04 15:23:15,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc3d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:15, skipping insertion in model container [2020-09-04 15:23:15,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:14" (2/3) ... [2020-09-04 15:23:15,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc3d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:15, skipping insertion in model container [2020-09-04 15:23:15,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:15" (3/3) ... [2020-09-04 15:23:15,405 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-09-04 15:23:15,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:15,425 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:15,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:15,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:15,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:15,469 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:15,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:15,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:15,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:15,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:15,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-04 15:23:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:15,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:15,518 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 15:23:15,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2041023672, now seen corresponding path program 1 times [2020-09-04 15:23:15,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:15,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168508791] [2020-09-04 15:23:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:15,612 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,269 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:16,458 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 15:23:16,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168508791] [2020-09-04 15:23:16,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:16,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:16,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769985234] [2020-09-04 15:23:16,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:16,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:16,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:16,493 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-04 15:23:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:17,806 INFO L93 Difference]: Finished difference Result 449 states and 536 transitions. [2020-09-04 15:23:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:17,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:17,827 INFO L225 Difference]: With dead ends: 449 [2020-09-04 15:23:17,828 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 15:23:17,833 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 15:23:17,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 15:23:17,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 241. [2020-09-04 15:23:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-04 15:23:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 261 transitions. [2020-09-04 15:23:17,975 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 261 transitions. Word has length 153 [2020-09-04 15:23:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:17,976 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 261 transitions. [2020-09-04 15:23:17,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 261 transitions. [2020-09-04 15:23:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:17,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:17,982 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 15:23:17,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:17,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1489723473, now seen corresponding path program 1 times [2020-09-04 15:23:17,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:17,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184579911] [2020-09-04 15:23:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:17,987 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,451 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:18,550 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 15:23:18,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184579911] [2020-09-04 15:23:18,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:18,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:18,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614540507] [2020-09-04 15:23:18,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:18,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:18,555 INFO L87 Difference]: Start difference. First operand 241 states and 261 transitions. Second operand 4 states. [2020-09-04 15:23:19,176 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:20,036 INFO L93 Difference]: Finished difference Result 360 states and 403 transitions. [2020-09-04 15:23:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:20,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:20,044 INFO L225 Difference]: With dead ends: 360 [2020-09-04 15:23:20,044 INFO L226 Difference]: Without dead ends: 265 [2020-09-04 15:23:20,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:23:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-04 15:23:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2020-09-04 15:23:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-04 15:23:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 248 transitions. [2020-09-04 15:23:20,119 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 248 transitions. Word has length 154 [2020-09-04 15:23:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:20,120 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 248 transitions. [2020-09-04 15:23:20,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 248 transitions. [2020-09-04 15:23:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:23:20,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:20,123 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] [2020-09-04 15:23:20,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:20,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:20,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2140088415, now seen corresponding path program 1 times [2020-09-04 15:23:20,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:20,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150954935] [2020-09-04 15:23:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:20,128 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,525 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:20,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:23:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:20,738 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 15:23:20,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150954935] [2020-09-04 15:23:20,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:20,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:20,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471022732] [2020-09-04 15:23:20,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:20,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:20,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:20,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:20,741 INFO L87 Difference]: Start difference. First operand 231 states and 248 transitions. Second operand 9 states. [2020-09-04 15:23:21,266 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:21,681 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:22,012 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:23:22,330 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:22,640 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:22,937 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:23,963 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:25,866 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-09-04 15:23:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:23:25,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:23:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:25,876 INFO L225 Difference]: With dead ends: 611 [2020-09-04 15:23:25,877 INFO L226 Difference]: Without dead ends: 490 [2020-09-04 15:23:25,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:23:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-04 15:23:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 427. [2020-09-04 15:23:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-04 15:23:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 476 transitions. [2020-09-04 15:23:26,022 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 476 transitions. Word has length 163 [2020-09-04 15:23:26,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:26,023 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 476 transitions. [2020-09-04 15:23:26,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 476 transitions. [2020-09-04 15:23:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:23:26,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:26,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:26,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:26,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:26,027 INFO L82 PathProgramCache]: Analyzing trace with hash -720243162, now seen corresponding path program 1 times [2020-09-04 15:23:26,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:26,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241993284] [2020-09-04 15:23:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:26,030 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,497 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:23:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:23:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:23:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:23:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:26,714 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 15:23:26,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241993284] [2020-09-04 15:23:26,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:26,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:26,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145538074] [2020-09-04 15:23:26,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:26,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:26,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:26,718 INFO L87 Difference]: Start difference. First operand 427 states and 476 transitions. Second operand 9 states. [2020-09-04 15:23:27,381 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:29,207 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:29,523 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:29,953 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:30,304 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:30,636 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:30,932 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:31,260 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:32,028 INFO L93 Difference]: Finished difference Result 1228 states and 1519 transitions. [2020-09-04 15:23:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:23:32,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-04 15:23:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:32,046 INFO L225 Difference]: With dead ends: 1228 [2020-09-04 15:23:32,047 INFO L226 Difference]: Without dead ends: 911 [2020-09-04 15:23:32,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:23:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-04 15:23:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 723. [2020-09-04 15:23:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-09-04 15:23:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 829 transitions. [2020-09-04 15:23:32,384 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 829 transitions. Word has length 171 [2020-09-04 15:23:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:32,384 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 829 transitions. [2020-09-04 15:23:32,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 829 transitions. [2020-09-04 15:23:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-04 15:23:32,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:32,389 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] [2020-09-04 15:23:32,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:32,389 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2132028994, now seen corresponding path program 1 times [2020-09-04 15:23:32,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:32,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94330188] [2020-09-04 15:23:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:32,393 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,723 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:23:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:23:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:23:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:23:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 15:23:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:32,886 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 15:23:32,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94330188] [2020-09-04 15:23:32,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:32,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:23:32,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397512741] [2020-09-04 15:23:32,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:23:32,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:23:32,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:23:32,889 INFO L87 Difference]: Start difference. First operand 723 states and 829 transitions. Second operand 6 states. [2020-09-04 15:23:33,329 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:34,154 INFO L93 Difference]: Finished difference Result 1185 states and 1400 transitions. [2020-09-04 15:23:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:23:34,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-09-04 15:23:34,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:34,159 INFO L225 Difference]: With dead ends: 1185 [2020-09-04 15:23:34,159 INFO L226 Difference]: Without dead ends: 572 [2020-09-04 15:23:34,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:23:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-09-04 15:23:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2020-09-04 15:23:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-09-04 15:23:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 593 transitions. [2020-09-04 15:23:34,311 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 593 transitions. Word has length 181 [2020-09-04 15:23:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:34,311 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 593 transitions. [2020-09-04 15:23:34,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:23:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 593 transitions. [2020-09-04 15:23:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-04 15:23:34,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:34,317 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] [2020-09-04 15:23:34,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:34,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash 466047794, now seen corresponding path program 1 times [2020-09-04 15:23:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:34,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171485964] [2020-09-04 15:23:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:34,321 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:34,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:34,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:34,662 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:34,662 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:34,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:23:34,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:34 BoogieIcfgContainer [2020-09-04 15:23:34,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:34,703 INFO L168 Benchmark]: Toolchain (without parser) took 21422.35 ms. Allocated memory was 137.4 MB in the beginning and 609.7 MB in the end (delta: 472.4 MB). Free memory was 100.9 MB in the beginning and 262.1 MB in the end (delta: -161.1 MB). Peak memory consumption was 311.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:34,708 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:23:34,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.79 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 171.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:34,710 INFO L168 Benchmark]: Boogie Preprocessor took 97.70 ms. Allocated memory is still 200.8 MB. Free memory was 171.0 MB in the beginning and 166.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:34,711 INFO L168 Benchmark]: RCFGBuilder took 1251.10 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 177.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:34,712 INFO L168 Benchmark]: TraceAbstraction took 19303.15 ms. Allocated memory was 230.7 MB in the beginning and 609.7 MB in the end (delta: 379.1 MB). Free memory was 177.6 MB in the beginning and 262.1 MB in the end (delta: -84.5 MB). Peak memory consumption was 294.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:34,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.79 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 171.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.70 ms. Allocated memory is still 200.8 MB. Free memory was 171.0 MB in the beginning and 166.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1251.10 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 177.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19303.15 ms. Allocated memory was 230.7 MB in the beginning and 609.7 MB in the end (delta: 379.1 MB). Free memory was 177.6 MB in the beginning and 262.1 MB in the end (delta: -84.5 MB). Peak memory consumption was 294.6 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: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND TRUE \read(tmp___2) [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND TRUE \read(systemActive) [L769] CALL processEnvironment() [L789] int tmp ; [L792] COND FALSE !(\read(pumpRunning)) [L807] FCALL processEnvironment__wrappee__base() [L769] RET processEnvironment() [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 615 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1070 SDtfs, 1799 SDslu, 1318 SDs, 0 SdLazy, 2846 SolverSat, 560 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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...