/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_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:32:46,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:32:46,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:32:46,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:32:46,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:32:46,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:32:46,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:32:46,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:32:46,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:32:46,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:32:46,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:32:46,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:32:46,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:32:46,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:32:46,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:32:46,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:32:46,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:32:46,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:32:46,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:32:46,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:32:46,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:32:46,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:32:46,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:32:46,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:32:46,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:32:46,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:32:46,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:32:46,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:32:46,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:32:46,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:32:46,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:32:46,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:32:46,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:32:46,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:32:46,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:32:46,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:32:46,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:32:46,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:32:46,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:32:46,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:32:46,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:32:46,722 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 15:32:46,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:32:46,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:32:46,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:32:46,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:32:46,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:32:46,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:32:46,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:32:46,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:32:46,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:32:46,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:32:46,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:32:46,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:32:46,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:32:46,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:32:46,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:32:46,738 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:32:46,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:32:46,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:32:46,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:32:46,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:32:46,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:32:46,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:32:46,740 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:32:47,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:32:47,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:32:47,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:32:47,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:32:47,199 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:32:47,200 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-09-04 15:32:47,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/938533b71/feb6f9d5f4154cd588dc67cb02a5260f/FLAGee99b2221 [2020-09-04 15:32:47,877 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:32:47,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-09-04 15:32:47,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/938533b71/feb6f9d5f4154cd588dc67cb02a5260f/FLAGee99b2221 [2020-09-04 15:32:48,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/938533b71/feb6f9d5f4154cd588dc67cb02a5260f [2020-09-04 15:32:48,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:32:48,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:32:48,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:32:48,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:32:48,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:32:48,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48, skipping insertion in model container [2020-09-04 15:32:48,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:32:48,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:32:48,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:32:48,598 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:32:48,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:32:48,821 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:32:48,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48 WrapperNode [2020-09-04 15:32:48,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:32:48,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:32:48,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:32:48,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:32:48,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (1/1) ... [2020-09-04 15:32:48,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:32:48,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:32:48,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:32:48,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:32:48,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (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 15:32:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:32:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:32:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:32:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:32:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:32:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:32:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:32:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:32:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:32:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:32:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:32:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:32:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:32:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:32:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:32:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:32:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:32:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:32:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:32:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:32:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:32:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:32:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:32:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:32:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:32:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:32:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:32:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:32:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:32:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:32:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:32:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:32:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:32:49,061 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:32:49,062 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:32:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:32:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:32:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:32:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:32:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:32:50,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:32:50,118 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:32:50,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:32:50 BoogieIcfgContainer [2020-09-04 15:32:50,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:32:50,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:32:50,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:32:50,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:32:50,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:32:48" (1/3) ... [2020-09-04 15:32:50,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a504d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:32:50, skipping insertion in model container [2020-09-04 15:32:50,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:32:48" (2/3) ... [2020-09-04 15:32:50,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a504d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:32:50, skipping insertion in model container [2020-09-04 15:32:50,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:32:50" (3/3) ... [2020-09-04 15:32:50,134 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-09-04 15:32:50,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:32:50,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:32:50,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:32:50,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:32:50,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:32:50,204 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:32:50,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:32:50,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:32:50,205 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:32:50,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:32:50,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:32:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states. [2020-09-04 15:32:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:32:50,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:32:50,253 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] [2020-09-04 15:32:50,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:32:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:32:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1598852952, now seen corresponding path program 1 times [2020-09-04 15:32:50,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:32:50,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903652872] [2020-09-04 15:32:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:32:50,340 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:32:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:50,976 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:32:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:32:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:32:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:32:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:32:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:32:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:32:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:32:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:51,175 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 15:32:51,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903652872] [2020-09-04 15:32:51,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:32:51,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:32:51,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822028617] [2020-09-04 15:32:51,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:32:51,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:32:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:32:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:32:51,216 INFO L87 Difference]: Start difference. First operand 278 states. Second operand 3 states. [2020-09-04 15:32:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:32:52,553 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2020-09-04 15:32:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:32:52,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:32:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:32:52,593 INFO L225 Difference]: With dead ends: 419 [2020-09-04 15:32:52,593 INFO L226 Difference]: Without dead ends: 266 [2020-09-04 15:32:52,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 15:32:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-04 15:32:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-09-04 15:32:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-04 15:32:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 245 transitions. [2020-09-04 15:32:52,772 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 245 transitions. Word has length 142 [2020-09-04 15:32:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:32:52,773 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 245 transitions. [2020-09-04 15:32:52,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:32:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 245 transitions. [2020-09-04 15:32:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:32:52,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:32:52,778 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] [2020-09-04 15:32:52,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:32:52,779 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:32:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:32:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash -469194886, now seen corresponding path program 1 times [2020-09-04 15:32:52,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:32:52,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504621423] [2020-09-04 15:32:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:32:52,783 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:32:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,256 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:32:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:32:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:32:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:32:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:32:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:32:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:32:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:32:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:53,372 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 15:32:53,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504621423] [2020-09-04 15:32:53,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:32:53,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:32:53,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006512152] [2020-09-04 15:32:53,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:32:53,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:32:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:32:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:32:53,376 INFO L87 Difference]: Start difference. First operand 227 states and 245 transitions. Second operand 4 states. [2020-09-04 15:32:53,970 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:32:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:32:54,746 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2020-09-04 15:32:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:32:54,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:32:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:32:54,752 INFO L225 Difference]: With dead ends: 336 [2020-09-04 15:32:54,753 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 15:32:54,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 15:32:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 15:32:54,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 15:32:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 15:32:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2020-09-04 15:32:54,827 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 143 [2020-09-04 15:32:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:32:54,827 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2020-09-04 15:32:54,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:32:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2020-09-04 15:32:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:32:54,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:32:54,830 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] [2020-09-04 15:32:54,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:32:54,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:32:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:32:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash 162245926, now seen corresponding path program 1 times [2020-09-04 15:32:54,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:32:54,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192815059] [2020-09-04 15:32:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:32:54,835 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:32:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,346 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:32:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:32:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:32:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:32:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:32:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:32:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:32:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:32:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:55,534 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 15:32:55,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192815059] [2020-09-04 15:32:55,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:32:55,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:32:55,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764157244] [2020-09-04 15:32:55,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:32:55,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:32:55,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:32:55,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:32:55,537 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 9 states. [2020-09-04 15:32:56,173 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:32:56,515 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:32:56,823 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:32:57,134 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:32:57,445 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:32:57,774 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:32:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:32:58,970 INFO L93 Difference]: Finished difference Result 356 states and 401 transitions. [2020-09-04 15:32:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:32:58,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:32:58,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:32:58,975 INFO L225 Difference]: With dead ends: 356 [2020-09-04 15:32:58,975 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 15:32:58,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 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 15:32:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 15:32:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2020-09-04 15:32:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-04 15:32:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2020-09-04 15:32:59,062 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 152 [2020-09-04 15:32:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:32:59,063 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2020-09-04 15:32:59,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:32:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2020-09-04 15:32:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 15:32:59,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:32:59,066 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] [2020-09-04 15:32:59,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:32:59,067 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:32:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:32:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 705113863, now seen corresponding path program 1 times [2020-09-04 15:32:59,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:32:59,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618870695] [2020-09-04 15:32:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:32:59,070 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:32:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,426 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:32:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:32:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:32:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:32:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:32:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:32:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:32:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:32:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:32:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:32:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:32:59,564 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 15:32:59,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618870695] [2020-09-04 15:32:59,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:32:59,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:32:59,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672828360] [2020-09-04 15:32:59,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:32:59,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:32:59,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:32:59,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:32:59,567 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand 6 states. [2020-09-04 15:33:00,069 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:01,477 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:02,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:02,031 INFO L93 Difference]: Finished difference Result 478 states and 544 transitions. [2020-09-04 15:33:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 15:33:02,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-04 15:33:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:02,036 INFO L225 Difference]: With dead ends: 478 [2020-09-04 15:33:02,036 INFO L226 Difference]: Without dead ends: 371 [2020-09-04 15:33:02,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:33:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-04 15:33:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 312. [2020-09-04 15:33:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-04 15:33:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 336 transitions. [2020-09-04 15:33:02,159 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 336 transitions. Word has length 160 [2020-09-04 15:33:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:02,160 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 336 transitions. [2020-09-04 15:33:02,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:33:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 336 transitions. [2020-09-04 15:33:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-04 15:33:02,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:02,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:33:02,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:33:02,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:02,163 INFO L82 PathProgramCache]: Analyzing trace with hash 392099313, now seen corresponding path program 1 times [2020-09-04 15:33:02,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:02,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179268037] [2020-09-04 15:33:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:02,166 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,577 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:33:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:33:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:33:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 15:33:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:33:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:02,822 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 15:33:02,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179268037] [2020-09-04 15:33:02,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:02,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:33:02,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714490759] [2020-09-04 15:33:02,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:33:02,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:02,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:33:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:33:02,827 INFO L87 Difference]: Start difference. First operand 312 states and 336 transitions. Second operand 14 states. [2020-09-04 15:33:03,358 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:03,825 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:04,122 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:04,397 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:04,717 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:05,017 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:05,703 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:06,917 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:07,230 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:07,560 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:07,902 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:08,210 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:33:08,516 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:08,818 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:09,142 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:09,494 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:33:09,850 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:10,916 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:11,227 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:11,606 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:12,487 INFO L93 Difference]: Finished difference Result 916 states and 1098 transitions. [2020-09-04 15:33:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:33:12,488 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 184 [2020-09-04 15:33:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:12,496 INFO L225 Difference]: With dead ends: 916 [2020-09-04 15:33:12,496 INFO L226 Difference]: Without dead ends: 714 [2020-09-04 15:33:12,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:33:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-09-04 15:33:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 617. [2020-09-04 15:33:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-09-04 15:33:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 687 transitions. [2020-09-04 15:33:12,732 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 687 transitions. Word has length 184 [2020-09-04 15:33:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:12,733 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 687 transitions. [2020-09-04 15:33:12,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:33:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 687 transitions. [2020-09-04 15:33:12,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-04 15:33:12,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:12,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:12,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:33:12,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:12,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:12,739 INFO L82 PathProgramCache]: Analyzing trace with hash -45879308, now seen corresponding path program 1 times [2020-09-04 15:33:12,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:12,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987615673] [2020-09-04 15:33:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:12,772 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,138 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:13,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:33:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:33:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:33:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:33:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 15:33:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 15:33:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-04 15:33:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-04 15:33:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-09-04 15:33:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 15:33:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:13,487 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 15:33:13,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987615673] [2020-09-04 15:33:13,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:13,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:33:13,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333352192] [2020-09-04 15:33:13,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:33:13,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:13,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:33:13,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:33:13,491 INFO L87 Difference]: Start difference. First operand 617 states and 687 transitions. Second operand 14 states. [2020-09-04 15:33:14,017 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:14,901 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:15,699 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:16,043 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:33:16,430 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:33:16,788 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:17,116 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:17,456 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:33:17,760 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:18,098 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:33:18,409 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:18,753 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:19,146 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:19,476 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:21,212 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:21,530 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:21,890 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:33:22,193 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:22,498 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:22,797 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:23,412 INFO L93 Difference]: Finished difference Result 1229 states and 1451 transitions. [2020-09-04 15:33:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 15:33:23,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 241 [2020-09-04 15:33:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:23,418 INFO L225 Difference]: With dead ends: 1229 [2020-09-04 15:33:23,419 INFO L226 Difference]: Without dead ends: 722 [2020-09-04 15:33:23,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 15:33:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-09-04 15:33:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 613. [2020-09-04 15:33:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-04 15:33:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 683 transitions. [2020-09-04 15:33:23,646 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 683 transitions. Word has length 241 [2020-09-04 15:33:23,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:23,647 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 683 transitions. [2020-09-04 15:33:23,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:33:23,647 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 683 transitions. [2020-09-04 15:33:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-04 15:33:23,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:23,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:23,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:33:23,653 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash 440058570, now seen corresponding path program 1 times [2020-09-04 15:33:23,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:23,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905035749] [2020-09-04 15:33:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:23,663 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,012 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:33:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:33:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:33:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 15:33:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-04 15:33:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 15:33:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 15:33:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 15:33:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:24,289 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 15:33:24,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905035749] [2020-09-04 15:33:24,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:24,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:33:24,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659969816] [2020-09-04 15:33:24,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:33:24,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:24,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:33:24,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:33:24,294 INFO L87 Difference]: Start difference. First operand 613 states and 683 transitions. Second operand 14 states. [2020-09-04 15:33:24,873 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:25,190 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:25,499 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:25,806 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:26,096 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:26,980 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:27,277 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:27,591 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:27,917 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:28,219 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:29,251 INFO L93 Difference]: Finished difference Result 1053 states and 1208 transitions. [2020-09-04 15:33:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:33:29,252 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 232 [2020-09-04 15:33:29,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:29,256 INFO L225 Difference]: With dead ends: 1053 [2020-09-04 15:33:29,257 INFO L226 Difference]: Without dead ends: 550 [2020-09-04 15:33:29,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:33:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-04 15:33:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 508. [2020-09-04 15:33:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-09-04 15:33:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 562 transitions. [2020-09-04 15:33:29,488 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 562 transitions. Word has length 232 [2020-09-04 15:33:29,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:29,489 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 562 transitions. [2020-09-04 15:33:29,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:33:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 562 transitions. [2020-09-04 15:33:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 15:33:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:29,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:29,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:33:29,494 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1204398017, now seen corresponding path program 1 times [2020-09-04 15:33:29,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:29,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224031761] [2020-09-04 15:33:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:29,512 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,863 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:29,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:33:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:33:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:33:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:33:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 15:33:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-04 15:33:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:33:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:33:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-04 15:33:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 15:33:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:30,164 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 15:33:30,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224031761] [2020-09-04 15:33:30,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:30,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:33:30,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502166695] [2020-09-04 15:33:30,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:33:30,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:33:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:33:30,167 INFO L87 Difference]: Start difference. First operand 508 states and 562 transitions. Second operand 13 states. [2020-09-04 15:33:30,637 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:31,440 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:32,572 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:32,883 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:33,213 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:33,522 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:33,825 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:34,133 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:34,433 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:34,764 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:35,103 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:33:35,412 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:36,343 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:36,633 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:37,667 INFO L93 Difference]: Finished difference Result 1105 states and 1307 transitions. [2020-09-04 15:33:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:33:37,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 237 [2020-09-04 15:33:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:37,679 INFO L225 Difference]: With dead ends: 1105 [2020-09-04 15:33:37,679 INFO L226 Difference]: Without dead ends: 788 [2020-09-04 15:33:37,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 15:33:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-04 15:33:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 651. [2020-09-04 15:33:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-04 15:33:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 731 transitions. [2020-09-04 15:33:37,846 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 731 transitions. Word has length 237 [2020-09-04 15:33:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:37,847 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 731 transitions. [2020-09-04 15:33:37,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:33:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 731 transitions. [2020-09-04 15:33:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-09-04 15:33:37,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:37,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:37,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:33:37,852 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:37,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:37,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1574385309, now seen corresponding path program 2 times [2020-09-04 15:33:37,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:37,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341239411] [2020-09-04 15:33:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:37,865 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:33:37,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:33:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:33:38,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:33:38,376 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:33:38,376 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:33:38,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:33:38,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:33:38 BoogieIcfgContainer [2020-09-04 15:33:38,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:33:38,413 INFO L168 Benchmark]: Toolchain (without parser) took 50254.22 ms. Allocated memory was 140.0 MB in the beginning and 773.3 MB in the end (delta: 633.3 MB). Free memory was 101.9 MB in the beginning and 437.9 MB in the end (delta: -336.0 MB). Peak memory consumption was 297.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:33:38,414 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:33:38,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.72 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 174.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:33:38,416 INFO L168 Benchmark]: Boogie Preprocessor took 115.58 ms. Allocated memory is still 203.9 MB. Free memory was 174.2 MB in the beginning and 169.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:33:38,416 INFO L168 Benchmark]: RCFGBuilder took 1186.35 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.6 MB in the beginning and 181.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:33:38,417 INFO L168 Benchmark]: TraceAbstraction took 48285.08 ms. Allocated memory was 237.5 MB in the beginning and 773.3 MB in the end (delta: 535.8 MB). Free memory was 181.0 MB in the beginning and 437.9 MB in the end (delta: -256.9 MB). Peak memory consumption was 278.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:33:38,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.72 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 174.2 MB in the end (delta: -72.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.58 ms. Allocated memory is still 203.9 MB. Free memory was 174.2 MB in the beginning and 169.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1186.35 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.6 MB in the beginning and 181.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48285.08 ms. Allocated memory was 237.5 MB in the beginning and 773.3 MB in the end (delta: 535.8 MB). Free memory was 181.0 MB in the beginning and 437.9 MB in the end (delta: -256.9 MB). Peak memory consumption was 278.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1784 SDtfs, 3671 SDslu, 4503 SDs, 0 SdLazy, 8435 SolverSat, 1047 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 224 SyntacticMatches, 7 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=651occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 547 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...