/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_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:24:58,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:24:58,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:24:58,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:24:58,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:24:58,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:24:58,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:24:58,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:24:58,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:24:58,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:24:58,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:24:58,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:24:58,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:24:58,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:24:58,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:24:58,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:24:58,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:24:58,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:24:58,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:24:58,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:24:58,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:24:58,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:24:58,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:24:58,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:24:58,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:24:58,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:24:58,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:24:58,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:24:58,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:24:58,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:24:58,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:24:58,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:24:58,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:24:58,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:24:58,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:24:58,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:24:58,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:24:58,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:24:58,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:24:58,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:24:58,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:24:58,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:24:58,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:24:58,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:24:58,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:24:58,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:24:58,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:24:58,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:24:58,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:24:58,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:24:58,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:24:58,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:24:58,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:24:58,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:24:58,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:24:58,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:24:58,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:24:58,990 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:24:58,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:24:58,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:24:58,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:24:58,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:24:58,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:24:58,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:24:58,991 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:24:59,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:24:59,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:24:59,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:24:59,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:24:59,266 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:24:59,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-07-07 12:24:59,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f25a135/8138b8bec8e24ae48e135cade0cb44e4/FLAG5b05c954d [2020-07-07 12:24:59,842 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:24:59,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-07-07 12:24:59,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f25a135/8138b8bec8e24ae48e135cade0cb44e4/FLAG5b05c954d [2020-07-07 12:25:00,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f25a135/8138b8bec8e24ae48e135cade0cb44e4 [2020-07-07 12:25:00,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:25:00,169 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:25:00,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:00,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:25:00,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:25:00,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47941ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00, skipping insertion in model container [2020-07-07 12:25:00,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:25:00,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:25:00,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:00,627 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:25:00,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:00,888 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:25:00,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00 WrapperNode [2020-07-07 12:25:00,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:00,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:25:00,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:25:00,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:25:00,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... [2020-07-07 12:25:00,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:25:00,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:25:00,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:25:00,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:25:00,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:25:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:25:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:25:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:25:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:25:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:25:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:25:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:25:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:25:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:25:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:25:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:25:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:25:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:25:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:25:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:25:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:25:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:25:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:25:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:25:02,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:25:02,186 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:25:02,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:02 BoogieIcfgContainer [2020-07-07 12:25:02,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:25:02,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:25:02,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:25:02,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:25:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:25:00" (1/3) ... [2020-07-07 12:25:02,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc842b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:02, skipping insertion in model container [2020-07-07 12:25:02,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:00" (2/3) ... [2020-07-07 12:25:02,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc842b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:02, skipping insertion in model container [2020-07-07 12:25:02,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:02" (3/3) ... [2020-07-07 12:25:02,201 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-07-07 12:25:02,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:25:02,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:25:02,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:25:02,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:25:02,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:25:02,258 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:25:02,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:25:02,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:25:02,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:25:02,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:25:02,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:25:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-07-07 12:25:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:25:02,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:02,303 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] [2020-07-07 12:25:02,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:02,310 INFO L82 PathProgramCache]: Analyzing trace with hash -483838742, now seen corresponding path program 1 times [2020-07-07 12:25:02,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:02,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196785540] [2020-07-07 12:25:02,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,096 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:03,303 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:03,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196785540] [2020-07-07 12:25:03,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:03,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:03,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666652821] [2020-07-07 12:25:03,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:03,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:03,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:03,344 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2020-07-07 12:25:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:04,750 INFO L93 Difference]: Finished difference Result 490 states and 587 transitions. [2020-07-07 12:25:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:04,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:04,770 INFO L225 Difference]: With dead ends: 490 [2020-07-07 12:25:04,770 INFO L226 Difference]: Without dead ends: 304 [2020-07-07 12:25:04,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-07-07 12:25:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 260. [2020-07-07 12:25:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-07 12:25:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 284 transitions. [2020-07-07 12:25:04,906 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 284 transitions. Word has length 142 [2020-07-07 12:25:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:04,908 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 284 transitions. [2020-07-07 12:25:04,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 284 transitions. [2020-07-07 12:25:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:04,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:04,913 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] [2020-07-07 12:25:04,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:04,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1956801941, now seen corresponding path program 1 times [2020-07-07 12:25:04,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:04,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384215339] [2020-07-07 12:25:04,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,244 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:05,316 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:05,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384215339] [2020-07-07 12:25:05,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:05,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:05,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583669024] [2020-07-07 12:25:05,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:05,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:05,320 INFO L87 Difference]: Start difference. First operand 260 states and 284 transitions. Second operand 4 states. [2020-07-07 12:25:05,955 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:06,930 INFO L93 Difference]: Finished difference Result 397 states and 450 transitions. [2020-07-07 12:25:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:06,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:06,935 INFO L225 Difference]: With dead ends: 397 [2020-07-07 12:25:06,936 INFO L226 Difference]: Without dead ends: 287 [2020-07-07 12:25:06,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:25:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-07-07 12:25:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 250. [2020-07-07 12:25:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-07-07 12:25:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 271 transitions. [2020-07-07 12:25:07,006 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 271 transitions. Word has length 143 [2020-07-07 12:25:07,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:07,007 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 271 transitions. [2020-07-07 12:25:07,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:07,007 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 271 transitions. [2020-07-07 12:25:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:25:07,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:07,010 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] [2020-07-07 12:25:07,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:07,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 156166343, now seen corresponding path program 1 times [2020-07-07 12:25:07,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:07,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819209240] [2020-07-07 12:25:07,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,312 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:07,466 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:07,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819209240] [2020-07-07 12:25:07,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:07,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:07,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214270287] [2020-07-07 12:25:07,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:07,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:07,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:07,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:07,470 INFO L87 Difference]: Start difference. First operand 250 states and 271 transitions. Second operand 10 states. [2020-07-07 12:25:08,079 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:08,446 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:08,715 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:25:08,958 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:09,197 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:09,423 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:10,334 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:12,832 INFO L93 Difference]: Finished difference Result 685 states and 803 transitions. [2020-07-07 12:25:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:12,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:25:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:12,838 INFO L225 Difference]: With dead ends: 685 [2020-07-07 12:25:12,838 INFO L226 Difference]: Without dead ends: 545 [2020-07-07 12:25:12,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-07-07 12:25:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 450. [2020-07-07 12:25:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-07-07 12:25:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 506 transitions. [2020-07-07 12:25:13,010 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 506 transitions. Word has length 156 [2020-07-07 12:25:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:13,011 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 506 transitions. [2020-07-07 12:25:13,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 506 transitions. [2020-07-07 12:25:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:25:13,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:13,015 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] [2020-07-07 12:25:13,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:13,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1551168922, now seen corresponding path program 1 times [2020-07-07 12:25:13,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:13,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196012778] [2020-07-07 12:25:13,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,405 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:13,563 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:13,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196012778] [2020-07-07 12:25:13,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:13,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:13,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10458263] [2020-07-07 12:25:13,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:13,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:13,567 INFO L87 Difference]: Start difference. First operand 450 states and 506 transitions. Second operand 9 states. [2020-07-07 12:25:14,024 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:15,183 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:15,448 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:15,811 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:16,071 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,303 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:16,616 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:16,863 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:17,406 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:18,476 INFO L93 Difference]: Finished difference Result 1248 states and 1506 transitions. [2020-07-07 12:25:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:18,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:25:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:18,484 INFO L225 Difference]: With dead ends: 1248 [2020-07-07 12:25:18,484 INFO L226 Difference]: Without dead ends: 908 [2020-07-07 12:25:18,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-07-07 12:25:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 751. [2020-07-07 12:25:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-07-07 12:25:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 858 transitions. [2020-07-07 12:25:18,794 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 858 transitions. Word has length 161 [2020-07-07 12:25:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:18,795 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 858 transitions. [2020-07-07 12:25:18,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 858 transitions. [2020-07-07 12:25:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:25:18,799 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:18,799 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] [2020-07-07 12:25:18,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:18,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:18,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1225724098, now seen corresponding path program 1 times [2020-07-07 12:25:18,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:18,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994708899] [2020-07-07 12:25:18,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,070 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:19,274 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:19,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994708899] [2020-07-07 12:25:19,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:19,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:19,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422128973] [2020-07-07 12:25:19,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:19,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:19,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:19,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:19,277 INFO L87 Difference]: Start difference. First operand 751 states and 858 transitions. Second operand 10 states. [2020-07-07 12:25:19,747 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:21,016 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:21,281 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:21,530 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:21,791 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:22,057 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:22,810 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:23,062 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:23,374 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:24,348 INFO L93 Difference]: Finished difference Result 1970 states and 2445 transitions. [2020-07-07 12:25:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:25:24,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:25:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:24,359 INFO L225 Difference]: With dead ends: 1970 [2020-07-07 12:25:24,360 INFO L226 Difference]: Without dead ends: 1329 [2020-07-07 12:25:24,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:25:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-07-07 12:25:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1061. [2020-07-07 12:25:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-07-07 12:25:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1229 transitions. [2020-07-07 12:25:24,666 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1229 transitions. Word has length 166 [2020-07-07 12:25:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:24,667 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1229 transitions. [2020-07-07 12:25:24,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1229 transitions. [2020-07-07 12:25:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:25:24,671 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:24,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:24,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:25:24,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1366553455, now seen corresponding path program 1 times [2020-07-07 12:25:24,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:24,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984674557] [2020-07-07 12:25:24,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,927 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:25,153 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:25,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984674557] [2020-07-07 12:25:25,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:25,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:25:25,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223629621] [2020-07-07 12:25:25,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:25:25,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:25:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:25:25,155 INFO L87 Difference]: Start difference. First operand 1061 states and 1229 transitions. Second operand 11 states. [2020-07-07 12:25:26,581 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:26,843 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:27,116 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:25:27,412 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:27,714 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:27,965 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:29,859 INFO L93 Difference]: Finished difference Result 2629 states and 3315 transitions. [2020-07-07 12:25:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:25:29,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-07-07 12:25:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:29,871 INFO L225 Difference]: With dead ends: 2629 [2020-07-07 12:25:29,872 INFO L226 Difference]: Without dead ends: 1678 [2020-07-07 12:25:29,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-07 12:25:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-07-07 12:25:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1099. [2020-07-07 12:25:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-07-07 12:25:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1269 transitions. [2020-07-07 12:25:30,218 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1269 transitions. Word has length 199 [2020-07-07 12:25:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:30,219 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1269 transitions. [2020-07-07 12:25:30,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:25:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1269 transitions. [2020-07-07 12:25:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:25:30,224 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:30,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:30,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:25:30,224 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:30,225 INFO L82 PathProgramCache]: Analyzing trace with hash 392683279, now seen corresponding path program 1 times [2020-07-07 12:25:30,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:30,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414068134] [2020-07-07 12:25:30,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,555 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:30,797 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:30,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414068134] [2020-07-07 12:25:30,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:30,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:25:30,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802428533] [2020-07-07 12:25:30,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:25:30,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:25:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:25:30,800 INFO L87 Difference]: Start difference. First operand 1099 states and 1269 transitions. Second operand 14 states. [2020-07-07 12:25:31,431 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:31,671 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:25:31,892 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:32,132 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:32,366 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:33,399 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:33,649 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:33,926 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:34,217 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:34,476 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:36,738 INFO L93 Difference]: Finished difference Result 2711 states and 3466 transitions. [2020-07-07 12:25:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:25:36,739 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2020-07-07 12:25:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:36,753 INFO L225 Difference]: With dead ends: 2711 [2020-07-07 12:25:36,753 INFO L226 Difference]: Without dead ends: 1722 [2020-07-07 12:25:36,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:25:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-07-07 12:25:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1123. [2020-07-07 12:25:37,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-07-07 12:25:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1293 transitions. [2020-07-07 12:25:37,293 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1293 transitions. Word has length 199 [2020-07-07 12:25:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:37,294 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1293 transitions. [2020-07-07 12:25:37,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:25:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1293 transitions. [2020-07-07 12:25:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:25:37,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:37,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:37,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:25:37,298 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:37,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1247610702, now seen corresponding path program 1 times [2020-07-07 12:25:37,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:37,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547171516] [2020-07-07 12:25:37,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,559 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:37,745 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:37,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547171516] [2020-07-07 12:25:37,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:37,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 12:25:37,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113540744] [2020-07-07 12:25:37,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 12:25:37,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:37,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 12:25:37,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 12:25:37,748 INFO L87 Difference]: Start difference. First operand 1123 states and 1293 transitions. Second operand 8 states. [2020-07-07 12:25:38,237 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:38,842 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:42,911 INFO L93 Difference]: Finished difference Result 4241 states and 5459 transitions. [2020-07-07 12:25:42,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 12:25:42,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-07-07 12:25:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:42,931 INFO L225 Difference]: With dead ends: 4241 [2020-07-07 12:25:42,932 INFO L226 Difference]: Without dead ends: 3228 [2020-07-07 12:25:42,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-07-07 12:25:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-07-07 12:25:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2303. [2020-07-07 12:25:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-07-07 12:25:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2673 transitions. [2020-07-07 12:25:44,015 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2673 transitions. Word has length 199 [2020-07-07 12:25:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:44,016 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2673 transitions. [2020-07-07 12:25:44,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 12:25:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2673 transitions. [2020-07-07 12:25:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:25:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:44,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:44,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:25:44,022 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:44,023 INFO L82 PathProgramCache]: Analyzing trace with hash -735617704, now seen corresponding path program 1 times [2020-07-07 12:25:44,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:44,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875665918] [2020-07-07 12:25:44,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:25:44,383 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:44,383 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:25:44,383 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:25:44,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:25:44,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:25:44 BoogieIcfgContainer [2020-07-07 12:25:44,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:25:44,412 INFO L168 Benchmark]: Toolchain (without parser) took 44243.28 ms. Allocated memory was 139.5 MB in the beginning and 920.1 MB in the end (delta: 780.7 MB). Free memory was 103.5 MB in the beginning and 265.4 MB in the end (delta: -161.9 MB). Peak memory consumption was 618.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,413 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.68 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 103.2 MB in the beginning and 174.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,414 INFO L168 Benchmark]: Boogie Preprocessor took 89.47 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 170.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,415 INFO L168 Benchmark]: RCFGBuilder took 1214.00 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 170.0 MB in the beginning and 175.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,416 INFO L168 Benchmark]: TraceAbstraction took 42216.32 ms. Allocated memory was 235.4 MB in the beginning and 920.1 MB in the end (delta: 684.7 MB). Free memory was 175.2 MB in the beginning and 265.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 594.5 MB. Max. memory is 7.1 GB. [2020-07-07 12:25:44,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.68 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 103.2 MB in the beginning and 174.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.47 ms. Allocated memory is still 204.5 MB. Free memory was 174.1 MB in the beginning and 170.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.00 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 170.0 MB in the beginning and 175.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42216.32 ms. Allocated memory was 235.4 MB in the beginning and 920.1 MB in the end (delta: 684.7 MB). Free memory was 175.2 MB in the beginning and 265.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 594.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp___2) [L298] CALL startSystem() [L248] systemActive = 1 [L298] RET startSystem() [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2010 SDtfs, 4705 SDslu, 4253 SDs, 0 SdLazy, 9025 SolverSat, 1632 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 203 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2303occurred 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: 2.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2704 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...