/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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:37,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:37,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:37,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:37,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:37,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:37,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:37,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:37,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:37,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:37,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:37,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:37,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:37,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:37,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:37,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:37,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:37,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:37,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:37,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:37,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:37,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:37,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:37,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:37,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:37,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:37,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:37,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:37,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:37,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:37,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:37,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:37,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:37,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:37,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:37,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:37,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:37,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:37,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:37,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:37,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:37,344 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 15:23:37,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:37,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:37,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:37,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:37,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:37,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:37,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:37,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:37,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:37,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:37,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:37,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:37,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:37,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:37,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:37,361 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:37,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:37,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:37,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:37,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:37,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:37,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:37,362 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:37,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:37,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:37,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:37,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:37,813 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:37,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-09-04 15:23:37,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/747a2c3eb/0cb11180bfdc49b4b5982f8d382792d9/FLAGb4aeaac8f [2020-09-04 15:23:38,487 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:38,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-09-04 15:23:38,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/747a2c3eb/0cb11180bfdc49b4b5982f8d382792d9/FLAGb4aeaac8f [2020-09-04 15:23:38,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/747a2c3eb/0cb11180bfdc49b4b5982f8d382792d9 [2020-09-04 15:23:38,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:38,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:38,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:38,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:38,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:38,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:38" (1/1) ... [2020-09-04 15:23:38,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:38, skipping insertion in model container [2020-09-04 15:23:38,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:38" (1/1) ... [2020-09-04 15:23:38,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:38,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:39,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:39,243 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:39,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:39,502 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:39,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39 WrapperNode [2020-09-04 15:23:39,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:39,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:39,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:39,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:39,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (1/1) ... [2020-09-04 15:23:39,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:39,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:39,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:39,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:39,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (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 15:23:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:23:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:23:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:23:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:41,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:41,008 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:41,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:41 BoogieIcfgContainer [2020-09-04 15:23:41,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:41,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:41,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:41,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:41,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:38" (1/3) ... [2020-09-04 15:23:41,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a8f694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:41, skipping insertion in model container [2020-09-04 15:23:41,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:39" (2/3) ... [2020-09-04 15:23:41,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a8f694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:41, skipping insertion in model container [2020-09-04 15:23:41,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:41" (3/3) ... [2020-09-04 15:23:41,035 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2020-09-04 15:23:41,046 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:41,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:41,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:41,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:41,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:41,112 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:41,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:41,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:41,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:41,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:41,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-09-04 15:23:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:41,161 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 15:23:41,161 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:41,168 INFO L82 PathProgramCache]: Analyzing trace with hash 984796511, now seen corresponding path program 1 times [2020-09-04 15:23:41,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:41,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470601558] [2020-09-04 15:23:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:41,266 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,059 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:42,266 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 15:23:42,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470601558] [2020-09-04 15:23:42,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:42,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:42,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984771741] [2020-09-04 15:23:42,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:42,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:42,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:42,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:42,320 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-09-04 15:23:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:43,553 INFO L93 Difference]: Finished difference Result 435 states and 517 transitions. [2020-09-04 15:23:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:43,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:43,580 INFO L225 Difference]: With dead ends: 435 [2020-09-04 15:23:43,580 INFO L226 Difference]: Without dead ends: 274 [2020-09-04 15:23:43,586 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 15:23:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-04 15:23:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 235. [2020-09-04 15:23:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-04 15:23:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2020-09-04 15:23:43,715 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 153 [2020-09-04 15:23:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:43,716 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2020-09-04 15:23:43,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2020-09-04 15:23:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:43,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:43,721 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 15:23:43,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:43,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:43,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1074714265, now seen corresponding path program 1 times [2020-09-04 15:23:43,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:43,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482980410] [2020-09-04 15:23:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:43,727 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,108 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:44,228 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 15:23:44,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482980410] [2020-09-04 15:23:44,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:44,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:44,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345005223] [2020-09-04 15:23:44,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:44,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:44,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:44,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:44,232 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 4 states. [2020-09-04 15:23:44,956 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:45,725 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2020-09-04 15:23:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:45,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:45,733 INFO L225 Difference]: With dead ends: 352 [2020-09-04 15:23:45,733 INFO L226 Difference]: Without dead ends: 257 [2020-09-04 15:23:45,736 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 15:23:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-04 15:23:45,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-04 15:23:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-04 15:23:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2020-09-04 15:23:45,803 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 154 [2020-09-04 15:23:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:45,804 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2020-09-04 15:23:45,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2020-09-04 15:23:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:23:45,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:45,807 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 15:23:45,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:45,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1460051564, now seen corresponding path program 1 times [2020-09-04 15:23:45,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:45,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517085470] [2020-09-04 15:23:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:45,812 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,247 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:23:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,421 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 15:23:46,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517085470] [2020-09-04 15:23:46,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:46,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:46,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620487248] [2020-09-04 15:23:46,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:46,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:46,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:46,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:46,424 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand 9 states. [2020-09-04 15:23:47,009 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:47,444 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:47,729 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:23:48,043 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:48,394 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:48,698 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:50,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:50,009 INFO L93 Difference]: Finished difference Result 372 states and 417 transitions. [2020-09-04 15:23:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:23:50,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:23:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:50,014 INFO L225 Difference]: With dead ends: 372 [2020-09-04 15:23:50,014 INFO L226 Difference]: Without dead ends: 257 [2020-09-04 15:23:50,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:23:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-04 15:23:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-04 15:23:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-04 15:23:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-09-04 15:23:50,080 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 163 [2020-09-04 15:23:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:50,080 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-09-04 15:23:50,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-09-04 15:23:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-04 15:23:50,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:50,083 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 15:23:50,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:50,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:50,084 INFO L82 PathProgramCache]: Analyzing trace with hash 973971077, now seen corresponding path program 1 times [2020-09-04 15:23:50,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:50,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266195491] [2020-09-04 15:23:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:50,087 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,469 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:23:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:23:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:23:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:23:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:50,640 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 15:23:50,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266195491] [2020-09-04 15:23:50,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:50,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:50,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027439880] [2020-09-04 15:23:50,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:50,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:50,644 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 9 states. [2020-09-04 15:23:51,349 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:53,093 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:53,440 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:53,811 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:54,161 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:54,480 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:54,807 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:55,168 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:55,814 INFO L93 Difference]: Finished difference Result 522 states and 613 transitions. [2020-09-04 15:23:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:23:55,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-04 15:23:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:55,819 INFO L225 Difference]: With dead ends: 522 [2020-09-04 15:23:55,819 INFO L226 Difference]: Without dead ends: 407 [2020-09-04 15:23:55,821 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 15:23:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-04 15:23:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 332. [2020-09-04 15:23:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-04 15:23:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2020-09-04 15:23:55,956 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 171 [2020-09-04 15:23:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:55,957 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2020-09-04 15:23:55,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2020-09-04 15:23:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-04 15:23:55,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:55,961 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 15:23:55,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:55,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1376953546, now seen corresponding path program 1 times [2020-09-04 15:23:55,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:55,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229556101] [2020-09-04 15:23:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:55,965 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,358 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:23:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:23:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:23:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:23:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 15:23:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:56,553 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 15:23:56,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229556101] [2020-09-04 15:23:56,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:56,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:23:56,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161755303] [2020-09-04 15:23:56,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:23:56,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:56,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:23:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:23:56,557 INFO L87 Difference]: Start difference. First operand 332 states and 363 transitions. Second operand 6 states. [2020-09-04 15:23:57,029 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:57,694 INFO L93 Difference]: Finished difference Result 501 states and 567 transitions. [2020-09-04 15:23:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:23:57,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-04 15:23:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:57,702 INFO L225 Difference]: With dead ends: 501 [2020-09-04 15:23:57,702 INFO L226 Difference]: Without dead ends: 279 [2020-09-04 15:23:57,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:23:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-04 15:23:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-09-04 15:23:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-04 15:23:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 273 transitions. [2020-09-04 15:23:57,779 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 273 transitions. Word has length 176 [2020-09-04 15:23:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:57,780 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 273 transitions. [2020-09-04 15:23:57,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:23:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 273 transitions. [2020-09-04 15:23:57,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-04 15:23:57,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:57,782 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 15:23:57,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:57,783 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:57,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722854, now seen corresponding path program 1 times [2020-09-04 15:23:57,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:57,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745307764] [2020-09-04 15:23:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:57,786 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:57,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:57,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:58,228 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:58,229 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:58,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:23:58,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:58 BoogieIcfgContainer [2020-09-04 15:23:58,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:58,262 INFO L168 Benchmark]: Toolchain (without parser) took 19478.07 ms. Allocated memory was 138.9 MB in the beginning and 569.9 MB in the end (delta: 431.0 MB). Free memory was 102.1 MB in the beginning and 201.9 MB in the end (delta: -99.8 MB). Peak memory consumption was 331.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,263 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.09 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 173.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,265 INFO L168 Benchmark]: Boogie Preprocessor took 104.68 ms. Allocated memory is still 203.4 MB. Free memory was 173.7 MB in the beginning and 169.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,266 INFO L168 Benchmark]: RCFGBuilder took 1415.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 169.5 MB in the beginning and 179.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,267 INFO L168 Benchmark]: TraceAbstraction took 17233.96 ms. Allocated memory was 235.4 MB in the beginning and 569.9 MB in the end (delta: 334.5 MB). Free memory was 179.5 MB in the beginning and 201.9 MB in the end (delta: -22.4 MB). Peak memory consumption was 312.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:58,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.09 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 173.7 MB in the end (delta: -71.9 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.68 ms. Allocated memory is still 203.4 MB. Free memory was 173.7 MB in the beginning and 169.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1415.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 169.5 MB in the beginning and 179.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17233.96 ms. Allocated memory was 235.4 MB in the beginning and 569.9 MB in the end (delta: 334.5 MB). Free memory was 179.5 MB in the beginning and 201.9 MB in the end (delta: -22.4 MB). Peak memory consumption was 312.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L458] int waterLevel = 1; [L459] int methaneLevelCritical = 0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L857] int splverifierCounter ; [L858] int tmp ; [L859] int tmp___0 ; [L860] int tmp___1 ; [L861] int tmp___2 ; [L864] splverifierCounter = 0 [L866] COND TRUE 1 [L868] COND TRUE splverifierCounter < 4 [L874] tmp = __VERIFIER_nondet_int() [L876] COND TRUE \read(tmp) [L878] CALL waterRise() [L476] COND TRUE waterLevel < 2 [L477] waterLevel = waterLevel + 1 [L878] RET waterRise() [L884] tmp___0 = __VERIFIER_nondet_int() [L886] COND FALSE !(\read(tmp___0)) [L894] tmp___2 = __VERIFIER_nondet_int() [L896] COND TRUE \read(tmp___2) [L909] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L497] int retValue_acc ; [L500] retValue_acc = methaneLevelCritical [L501] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L529] int retValue_acc ; [L532] retValue_acc = waterLevel [L533] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1033 SDtfs, 1392 SDslu, 1222 SDs, 0 SdLazy, 2431 SolverSat, 395 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred 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: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 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...