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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:39,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:39,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:39,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:39,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:39,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:39,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:39,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:39,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:39,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:39,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:39,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:39,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:39,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:39,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:39,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:39,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:39,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:39,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:39,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:39,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:39,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:39,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:39,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:39,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:39,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:39,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:39,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:39,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:39,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:39,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:39,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:39,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:39,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:39,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:39,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:39,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:39,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:39,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:39,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:39,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:39,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:09:39,109 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:39,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:39,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:39,110 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:39,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:39,111 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:39,111 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:39,111 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:39,111 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:39,111 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:39,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:39,112 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:39,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:39,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:39,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:39,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:39,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:39,113 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:39,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:39,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:39,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:39,114 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:39,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:39,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:39,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:39,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:39,115 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:39,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:39,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:39,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:39,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:39,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:39,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:39,161 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:39,162 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:39,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-09-16 17:09:39,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aef1fd24/ae61e536bf9a4decb96e49083091cfb7/FLAG852734cb6 [2019-09-16 17:09:39,778 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:39,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-09-16 17:09:39,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aef1fd24/ae61e536bf9a4decb96e49083091cfb7/FLAG852734cb6 [2019-09-16 17:09:39,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aef1fd24/ae61e536bf9a4decb96e49083091cfb7 [2019-09-16 17:09:40,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:40,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:40,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:40,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:40,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:40,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:39" (1/1) ... [2019-09-16 17:09:40,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b78263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40, skipping insertion in model container [2019-09-16 17:09:40,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:39" (1/1) ... [2019-09-16 17:09:40,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:40,086 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:40,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:40,540 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:40,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:40,729 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:40,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40 WrapperNode [2019-09-16 17:09:40,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:40,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:40,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:40,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:40,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (1/1) ... [2019-09-16 17:09:40,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:40,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:40,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:40,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:40,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (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 [2019-09-16 17:09:40,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:40,899 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:40,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:40,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:40,904 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:40,904 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:09:40,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:40,906 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:40,908 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:40,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:41,935 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:41,936 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:41,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:41 BoogieIcfgContainer [2019-09-16 17:09:41,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:41,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:41,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:41,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:41,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:39" (1/3) ... [2019-09-16 17:09:41,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49483ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:41, skipping insertion in model container [2019-09-16 17:09:41,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:40" (2/3) ... [2019-09-16 17:09:41,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49483ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:41, skipping insertion in model container [2019-09-16 17:09:41,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:41" (3/3) ... [2019-09-16 17:09:41,946 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2019-09-16 17:09:41,972 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:41,981 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:41,997 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:42,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:42,021 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:42,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:42,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:42,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:42,022 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:42,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:42,022 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-09-16 17:09:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:42,055 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,056 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:42,059 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2019-09-16 17:09:42,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,129 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:42,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:42,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:42,464 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:42,469 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:42,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:42,488 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 2 states. [2019-09-16 17:09:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:42,515 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2019-09-16 17:09:42,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:42,516 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:42,528 INFO L225 Difference]: With dead ends: 139 [2019-09-16 17:09:42,528 INFO L226 Difference]: Without dead ends: 128 [2019-09-16 17:09:42,530 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-09-16 17:09:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-09-16 17:09:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-09-16 17:09:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-09-16 17:09:42,588 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2019-09-16 17:09:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:42,588 INFO L475 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-09-16 17:09:42,589 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-09-16 17:09:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:42,593 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,593 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:42,593 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2019-09-16 17:09:42,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,598 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:42,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:42,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:42,736 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:42,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:42,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:42,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:42,741 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 3 states. [2019-09-16 17:09:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:42,774 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2019-09-16 17:09:42,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:42,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:42,781 INFO L225 Difference]: With dead ends: 119 [2019-09-16 17:09:42,781 INFO L226 Difference]: Without dead ends: 119 [2019-09-16 17:09:42,783 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-16 17:09:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-09-16 17:09:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-16 17:09:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2019-09-16 17:09:42,817 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2019-09-16 17:09:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:42,818 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2019-09-16 17:09:42,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2019-09-16 17:09:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-16 17:09:42,823 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:42,824 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:42,824 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:42,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2019-09-16 17:09:42,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:42,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:42,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:42,831 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:43,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:43,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:43,089 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:43,090 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:43,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:43,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:43,091 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 7 states. [2019-09-16 17:09:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:43,620 INFO L93 Difference]: Finished difference Result 266 states and 318 transitions. [2019-09-16 17:09:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:09:43,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-16 17:09:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:43,629 INFO L225 Difference]: With dead ends: 266 [2019-09-16 17:09:43,629 INFO L226 Difference]: Without dead ends: 266 [2019-09-16 17:09:43,632 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:09:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2019-09-16 17:09:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 242. [2019-09-16 17:09:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-09-16 17:09:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2019-09-16 17:09:43,670 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2019-09-16 17:09:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:43,671 INFO L475 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2019-09-16 17:09:43,671 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:09:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2019-09-16 17:09:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:09:43,674 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:43,674 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:43,675 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2019-09-16 17:09:43,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:43,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:43,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:43,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:43,679 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:09:43,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:43,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:43,861 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:43,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:43,862 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 6 states. [2019-09-16 17:09:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,097 INFO L93 Difference]: Finished difference Result 353 states and 421 transitions. [2019-09-16 17:09:44,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:44,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-09-16 17:09:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:44,104 INFO L225 Difference]: With dead ends: 353 [2019-09-16 17:09:44,104 INFO L226 Difference]: Without dead ends: 353 [2019-09-16 17:09:44,105 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2019-09-16 17:09:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 343. [2019-09-16 17:09:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-09-16 17:09:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 411 transitions. [2019-09-16 17:09:44,151 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 411 transitions. Word has length 70 [2019-09-16 17:09:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,151 INFO L475 AbstractCegarLoop]: Abstraction has 343 states and 411 transitions. [2019-09-16 17:09:44,151 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 411 transitions. [2019-09-16 17:09:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:09:44,159 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,159 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:44,159 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,160 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2019-09-16 17:09:44,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,169 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:44,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:44,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:09:44,316 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:44,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:09:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:09:44,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:44,319 INFO L87 Difference]: Start difference. First operand 343 states and 411 transitions. Second operand 4 states. [2019-09-16 17:09:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,630 INFO L93 Difference]: Finished difference Result 945 states and 1185 transitions. [2019-09-16 17:09:44,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:09:44,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-09-16 17:09:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:44,642 INFO L225 Difference]: With dead ends: 945 [2019-09-16 17:09:44,642 INFO L226 Difference]: Without dead ends: 945 [2019-09-16 17:09:44,643 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:09:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-09-16 17:09:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 925. [2019-09-16 17:09:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2019-09-16 17:09:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1146 transitions. [2019-09-16 17:09:44,723 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1146 transitions. Word has length 88 [2019-09-16 17:09:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,723 INFO L475 AbstractCegarLoop]: Abstraction has 925 states and 1146 transitions. [2019-09-16 17:09:44,723 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:09:44,724 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1146 transitions. [2019-09-16 17:09:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:09:44,728 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,728 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:44,729 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2019-09-16 17:09:44,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:44,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:44,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:09:44,834 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:44,835 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:09:44,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:09:44,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:09:44,836 INFO L87 Difference]: Start difference. First operand 925 states and 1146 transitions. Second operand 6 states. [2019-09-16 17:09:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:44,881 INFO L93 Difference]: Finished difference Result 955 states and 1178 transitions. [2019-09-16 17:09:44,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:09:44,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2019-09-16 17:09:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:44,888 INFO L225 Difference]: With dead ends: 955 [2019-09-16 17:09:44,889 INFO L226 Difference]: Without dead ends: 955 [2019-09-16 17:09:44,889 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2019-09-16 17:09:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 955. [2019-09-16 17:09:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2019-09-16 17:09:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1178 transitions. [2019-09-16 17:09:44,934 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1178 transitions. Word has length 88 [2019-09-16 17:09:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:44,934 INFO L475 AbstractCegarLoop]: Abstraction has 955 states and 1178 transitions. [2019-09-16 17:09:44,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:09:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1178 transitions. [2019-09-16 17:09:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-16 17:09:44,938 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:44,938 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:44,938 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:44,939 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2019-09-16 17:09:44,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:44,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:44,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:44,942 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:45,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:45,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:09:45,075 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:45,076 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:09:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:09:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:45,077 INFO L87 Difference]: Start difference. First operand 955 states and 1178 transitions. Second operand 8 states. [2019-09-16 17:09:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:45,113 INFO L93 Difference]: Finished difference Result 833 states and 1008 transitions. [2019-09-16 17:09:45,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:09:45,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-09-16 17:09:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:45,118 INFO L225 Difference]: With dead ends: 833 [2019-09-16 17:09:45,119 INFO L226 Difference]: Without dead ends: 833 [2019-09-16 17:09:45,119 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:09:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2019-09-16 17:09:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2019-09-16 17:09:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2019-09-16 17:09:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1008 transitions. [2019-09-16 17:09:45,154 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1008 transitions. Word has length 88 [2019-09-16 17:09:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:45,155 INFO L475 AbstractCegarLoop]: Abstraction has 833 states and 1008 transitions. [2019-09-16 17:09:45,155 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:09:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1008 transitions. [2019-09-16 17:09:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-16 17:09:45,157 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:45,158 INFO L407 BasicCegarLoop]: trace histogram [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] [2019-09-16 17:09:45,158 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2019-09-16 17:09:45,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:45,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:45,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:45,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:45,161 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:45,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:45,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:09:45,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:45,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:09:45,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:09:45,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:09:45,306 INFO L87 Difference]: Start difference. First operand 833 states and 1008 transitions. Second operand 9 states. [2019-09-16 17:09:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:46,339 INFO L93 Difference]: Finished difference Result 1666 states and 2017 transitions. [2019-09-16 17:09:46,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:09:46,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2019-09-16 17:09:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:46,348 INFO L225 Difference]: With dead ends: 1666 [2019-09-16 17:09:46,349 INFO L226 Difference]: Without dead ends: 1666 [2019-09-16 17:09:46,349 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:09:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2019-09-16 17:09:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1466. [2019-09-16 17:09:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2019-09-16 17:09:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1758 transitions. [2019-09-16 17:09:46,421 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1758 transitions. Word has length 92 [2019-09-16 17:09:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:46,424 INFO L475 AbstractCegarLoop]: Abstraction has 1466 states and 1758 transitions. [2019-09-16 17:09:46,425 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:09:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1758 transitions. [2019-09-16 17:09:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-16 17:09:46,430 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:46,430 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-16 17:09:46,431 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:46,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2019-09-16 17:09:46,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:46,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:46,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:46,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:46,435 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-16 17:09:46,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:09:46,601 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:09:46,604 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2019-09-16 17:09:46,607 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [173], [179], [196], [197], [198], [200], [205], [207], [208], [209], [210], [216], [219], [223], [229], [258], [262], [267], [271], [272], [275], [276], [277], [279], [280], [281], [283], [286], [288], [291], [294], [303], [305], [306], [307], [401], [402], [412], [420], [421], [422], [423], [424], [425], [426], [427], [428], [462], [463], [464], [465], [468], [469], [470], [471], [478], [479], [482], [483], [484], [485], [486], [487], [488], [489], [490], [491], [496], [497], [498], [499], [500], [501], [502], [506], [507], [508], [516], [517], [518] [2019-09-16 17:09:46,660 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:09:46,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:09:46,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:09:46,763 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:09:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:46,769 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:09:46,864 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:09:46,864 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:09:46,868 INFO L420 sIntCurrentIteration]: We unified 135 AI predicates to 135 [2019-09-16 17:09:46,868 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:09:46,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:09:46,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:09:46,870 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:46,870 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:46,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:46,871 INFO L87 Difference]: Start difference. First operand 1466 states and 1758 transitions. Second operand 2 states. [2019-09-16 17:09:46,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:46,872 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:09:46,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:46,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 136 [2019-09-16 17:09:46,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:46,872 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:09:46,872 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:09:46,873 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:09:46,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:09:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:09:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:09:46,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2019-09-16 17:09:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:46,874 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:09:46,874 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:46,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:09:46,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:09:46,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:09:46 BoogieIcfgContainer [2019-09-16 17:09:46,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:09:46,882 INFO L168 Benchmark]: Toolchain (without parser) took 6872.62 ms. Allocated memory was 130.5 MB in the beginning and 350.2 MB in the end (delta: 219.7 MB). Free memory was 85.0 MB in the beginning and 187.0 MB in the end (delta: -102.0 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,883 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.91 ms. Allocated memory was 130.5 MB in the beginning and 199.8 MB in the end (delta: 69.2 MB). Free memory was 84.8 MB in the beginning and 165.4 MB in the end (delta: -80.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,885 INFO L168 Benchmark]: Boogie Preprocessor took 91.97 ms. Allocated memory is still 199.8 MB. Free memory was 165.4 MB in the beginning and 158.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,886 INFO L168 Benchmark]: RCFGBuilder took 1115.00 ms. Allocated memory is still 199.8 MB. Free memory was 158.6 MB in the beginning and 73.9 MB in the end (delta: 84.7 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,887 INFO L168 Benchmark]: TraceAbstraction took 4940.93 ms. Allocated memory was 199.8 MB in the beginning and 350.2 MB in the end (delta: 150.5 MB). Free memory was 73.9 MB in the beginning and 187.0 MB in the end (delta: -113.1 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:09:46,893 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.91 ms. Allocated memory was 130.5 MB in the beginning and 199.8 MB in the end (delta: 69.2 MB). Free memory was 84.8 MB in the beginning and 165.4 MB in the end (delta: -80.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.97 ms. Allocated memory is still 199.8 MB. Free memory was 165.4 MB in the beginning and 158.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1115.00 ms. Allocated memory is still 199.8 MB. Free memory was 158.6 MB in the beginning and 73.9 MB in the end (delta: 84.7 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4940.93 ms. Allocated memory was 199.8 MB in the beginning and 350.2 MB in the end (delta: 150.5 MB). Free memory was 73.9 MB in the beginning and 187.0 MB in the end (delta: -113.1 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 235 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1365 SDtfs, 951 SDslu, 3139 SDs, 0 SdLazy, 1116 SolverSat, 223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1466occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8888888888888888 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 737 ConstructedInterpolants, 0 QuantifiedInterpolants, 105767 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 58/63 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...