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_spec2_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:37,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:37,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:37,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:37,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:37,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:37,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:37,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:37,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:37,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:37,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:37,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:37,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:37,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:37,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:37,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:37,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:37,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:37,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:37,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:37,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:37,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:37,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:37,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:37,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:37,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:37,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:37,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:37,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:37,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:37,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:37,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:37,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:37,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:37,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:37,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:37,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:37,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:37,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:37,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:37,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:37,367 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 17:08:37,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:37,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:37,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:37,388 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:37,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:37,389 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:37,389 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:37,389 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:37,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:37,390 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:37,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:37,391 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:37,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:37,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:37,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:37,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:37,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:37,392 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:37,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:37,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:37,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:37,393 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:37,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:37,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:37,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:37,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:37,394 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:37,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:37,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:37,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:37,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:37,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:37,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:37,450 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:37,451 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:37,451 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-09-16 17:08:37,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9dd1f25/5877425c8bc0403ca5e9379c64f2f1c2/FLAG9efcb09cc [2019-09-16 17:08:38,017 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:38,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-09-16 17:08:38,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9dd1f25/5877425c8bc0403ca5e9379c64f2f1c2/FLAG9efcb09cc [2019-09-16 17:08:38,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9dd1f25/5877425c8bc0403ca5e9379c64f2f1c2 [2019-09-16 17:08:38,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:38,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:38,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:38,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:38,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:38,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:38,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c7e80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38, skipping insertion in model container [2019-09-16 17:08:38,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:38,292 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:38,348 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:38,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:38,801 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:38,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:38,955 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:38,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38 WrapperNode [2019-09-16 17:08:38,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:38,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:38,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:38,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:38,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:38,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:38,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:38,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:39,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:39,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:39,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (1/1) ... [2019-09-16 17:08:39,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:39,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:39,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:39,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:39,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (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 17:08:39,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:39,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:39,136 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:39,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:39,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:39,139 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:39,140 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:08:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:08:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:39,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:39,144 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:39,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:39,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:39,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:39,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:39,151 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:08:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:08:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-16 17:08:39,152 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:39,153 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:39,154 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:39,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:39,155 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-16 17:08:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:39,156 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:39,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:39,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:39,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:40,409 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:40,410 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:40,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:40 BoogieIcfgContainer [2019-09-16 17:08:40,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:40,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:40,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:40,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:40,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:38" (1/3) ... [2019-09-16 17:08:40,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5eda4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:40, skipping insertion in model container [2019-09-16 17:08:40,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:38" (2/3) ... [2019-09-16 17:08:40,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5eda4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:40, skipping insertion in model container [2019-09-16 17:08:40,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:40" (3/3) ... [2019-09-16 17:08:40,420 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-09-16 17:08:40,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:40,440 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:40,458 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:40,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:40,488 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:40,489 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:40,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:40,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:40,490 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:40,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:40,490 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2019-09-16 17:08:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-16 17:08:40,529 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:40,530 INFO L407 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] [2019-09-16 17:08:40,532 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:40,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1876229816, now seen corresponding path program 1 times [2019-09-16 17:08:40,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:40,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:40,609 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:40,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:40,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:40,917 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:40,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:40,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:40,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:40,944 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 2 states. [2019-09-16 17:08:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:41,007 INFO L93 Difference]: Finished difference Result 176 states and 209 transitions. [2019-09-16 17:08:41,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:41,009 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-16 17:08:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:41,028 INFO L225 Difference]: With dead ends: 176 [2019-09-16 17:08:41,029 INFO L226 Difference]: Without dead ends: 165 [2019-09-16 17:08:41,031 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 17:08:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-09-16 17:08:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2019-09-16 17:08:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-09-16 17:08:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2019-09-16 17:08:41,115 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 51 [2019-09-16 17:08:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:41,116 INFO L475 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2019-09-16 17:08:41,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2019-09-16 17:08:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:41,128 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:41,128 INFO L407 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] [2019-09-16 17:08:41,129 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash -473730038, now seen corresponding path program 1 times [2019-09-16 17:08:41,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:41,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:41,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,135 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:41,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:41,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:41,324 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:41,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:41,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:41,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:41,327 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand 3 states. [2019-09-16 17:08:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:41,350 INFO L93 Difference]: Finished difference Result 156 states and 185 transitions. [2019-09-16 17:08:41,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:41,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-16 17:08:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:41,354 INFO L225 Difference]: With dead ends: 156 [2019-09-16 17:08:41,354 INFO L226 Difference]: Without dead ends: 156 [2019-09-16 17:08:41,355 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 17:08:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-09-16 17:08:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-09-16 17:08:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-16 17:08:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 185 transitions. [2019-09-16 17:08:41,370 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 185 transitions. Word has length 52 [2019-09-16 17:08:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:41,370 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 185 transitions. [2019-09-16 17:08:41,371 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 185 transitions. [2019-09-16 17:08:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:41,373 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:41,373 INFO L407 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] [2019-09-16 17:08:41,374 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1190097928, now seen corresponding path program 1 times [2019-09-16 17:08:41,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:41,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:41,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:41,377 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:41,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:41,500 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:41,501 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:41,501 INFO L87 Difference]: Start difference. First operand 156 states and 185 transitions. Second operand 7 states. [2019-09-16 17:08:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:42,084 INFO L93 Difference]: Finished difference Result 335 states and 408 transitions. [2019-09-16 17:08:42,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:42,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-16 17:08:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:42,088 INFO L225 Difference]: With dead ends: 335 [2019-09-16 17:08:42,089 INFO L226 Difference]: Without dead ends: 335 [2019-09-16 17:08:42,089 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 17:08:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-09-16 17:08:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 323. [2019-09-16 17:08:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2019-09-16 17:08:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 396 transitions. [2019-09-16 17:08:42,126 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 396 transitions. Word has length 57 [2019-09-16 17:08:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:42,127 INFO L475 AbstractCegarLoop]: Abstraction has 323 states and 396 transitions. [2019-09-16 17:08:42,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 396 transitions. [2019-09-16 17:08:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-16 17:08:42,130 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:42,130 INFO L407 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] [2019-09-16 17:08:42,130 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1162392239, now seen corresponding path program 1 times [2019-09-16 17:08:42,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:42,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:42,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:42,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:42,134 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:42,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:42,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:42,290 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:42,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:42,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:42,292 INFO L87 Difference]: Start difference. First operand 323 states and 396 transitions. Second operand 6 states. [2019-09-16 17:08:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:42,557 INFO L93 Difference]: Finished difference Result 600 states and 738 transitions. [2019-09-16 17:08:42,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:42,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-16 17:08:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:42,563 INFO L225 Difference]: With dead ends: 600 [2019-09-16 17:08:42,564 INFO L226 Difference]: Without dead ends: 600 [2019-09-16 17:08:42,564 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 17:08:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-09-16 17:08:42,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 594. [2019-09-16 17:08:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-09-16 17:08:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 732 transitions. [2019-09-16 17:08:42,612 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 732 transitions. Word has length 62 [2019-09-16 17:08:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:42,613 INFO L475 AbstractCegarLoop]: Abstraction has 594 states and 732 transitions. [2019-09-16 17:08:42,613 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 732 transitions. [2019-09-16 17:08:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-16 17:08:42,617 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:42,617 INFO L407 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] [2019-09-16 17:08:42,617 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:42,618 INFO L82 PathProgramCache]: Analyzing trace with hash -956691731, now seen corresponding path program 1 times [2019-09-16 17:08:42,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:42,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:42,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:42,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:42,621 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:42,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:42,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:42,719 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:42,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:42,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:42,721 INFO L87 Difference]: Start difference. First operand 594 states and 732 transitions. Second operand 7 states. [2019-09-16 17:08:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:43,565 INFO L93 Difference]: Finished difference Result 981 states and 1238 transitions. [2019-09-16 17:08:43,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:08:43,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-16 17:08:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:43,573 INFO L225 Difference]: With dead ends: 981 [2019-09-16 17:08:43,573 INFO L226 Difference]: Without dead ends: 981 [2019-09-16 17:08:43,573 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:08:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2019-09-16 17:08:43,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 883. [2019-09-16 17:08:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-09-16 17:08:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2019-09-16 17:08:43,631 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 66 [2019-09-16 17:08:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:43,632 INFO L475 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2019-09-16 17:08:43,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2019-09-16 17:08:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-16 17:08:43,635 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:43,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:43,635 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 181415894, now seen corresponding path program 1 times [2019-09-16 17:08:43,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:43,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:43,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:43,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:43,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:43,738 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 17:08:43,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:43,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:43,739 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:43,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:43,740 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand 8 states. [2019-09-16 17:08:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:43,786 INFO L93 Difference]: Finished difference Result 911 states and 1099 transitions. [2019-09-16 17:08:43,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:43,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2019-09-16 17:08:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:43,793 INFO L225 Difference]: With dead ends: 911 [2019-09-16 17:08:43,793 INFO L226 Difference]: Without dead ends: 911 [2019-09-16 17:08:43,794 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 17:08:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2019-09-16 17:08:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 899. [2019-09-16 17:08:43,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-09-16 17:08:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1087 transitions. [2019-09-16 17:08:43,840 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1087 transitions. Word has length 109 [2019-09-16 17:08:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:43,842 INFO L475 AbstractCegarLoop]: Abstraction has 899 states and 1087 transitions. [2019-09-16 17:08:43,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1087 transitions. [2019-09-16 17:08:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-16 17:08:43,852 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:43,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:43,853 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1757746152, now seen corresponding path program 1 times [2019-09-16 17:08:43,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:43,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:43,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:43,859 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:43,979 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 17:08:43,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:43,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:43,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:43,981 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:43,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:43,982 INFO L87 Difference]: Start difference. First operand 899 states and 1087 transitions. Second operand 6 states. [2019-09-16 17:08:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:44,026 INFO L93 Difference]: Finished difference Result 927 states and 1119 transitions. [2019-09-16 17:08:44,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:44,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2019-09-16 17:08:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:44,032 INFO L225 Difference]: With dead ends: 927 [2019-09-16 17:08:44,032 INFO L226 Difference]: Without dead ends: 927 [2019-09-16 17:08:44,033 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 17:08:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-09-16 17:08:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 919. [2019-09-16 17:08:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-09-16 17:08:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1107 transitions. [2019-09-16 17:08:44,070 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1107 transitions. Word has length 109 [2019-09-16 17:08:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:44,071 INFO L475 AbstractCegarLoop]: Abstraction has 919 states and 1107 transitions. [2019-09-16 17:08:44,071 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1107 transitions. [2019-09-16 17:08:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-16 17:08:44,074 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:44,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:44,075 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:44,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:44,075 INFO L82 PathProgramCache]: Analyzing trace with hash 950585909, now seen corresponding path program 1 times [2019-09-16 17:08:44,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:44,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:44,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:44,078 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:44,191 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 17:08:44,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:44,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:44,192 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:44,193 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:44,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:44,193 INFO L87 Difference]: Start difference. First operand 919 states and 1107 transitions. Second operand 4 states. [2019-09-16 17:08:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:44,475 INFO L93 Difference]: Finished difference Result 2010 states and 2519 transitions. [2019-09-16 17:08:44,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:44,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-09-16 17:08:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:44,488 INFO L225 Difference]: With dead ends: 2010 [2019-09-16 17:08:44,488 INFO L226 Difference]: Without dead ends: 2010 [2019-09-16 17:08:44,489 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 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 17:08:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2019-09-16 17:08:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1979. [2019-09-16 17:08:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2019-09-16 17:08:44,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2447 transitions. [2019-09-16 17:08:44,591 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2447 transitions. Word has length 109 [2019-09-16 17:08:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:44,591 INFO L475 AbstractCegarLoop]: Abstraction has 1979 states and 2447 transitions. [2019-09-16 17:08:44,591 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:44,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2447 transitions. [2019-09-16 17:08:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-16 17:08:44,597 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:44,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:44,598 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1552682437, now seen corresponding path program 1 times [2019-09-16 17:08:44,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:44,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:44,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:44,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:44,603 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:08:44,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:44,787 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:44,788 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2019-09-16 17:08:44,790 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [184], [190], [198], [199], [202], [204], [207], [209], [212], [215], [236], [237], [238], [240], [245], [248], [249], [251], [256], [258], [259], [262], [263], [269], [273], [315], [318], [320], [323], [333], [336], [340], [341], [344], [345], [360], [363], [364], [365], [389], [391], [392], [459], [460], [465], [467], [470], [478], [479], [480], [481], [482], [483], [484], [485], [486], [528], [529], [530], [531], [532], [533], [538], [542], [543], [544], [545], [546], [548], [549], [550], [551], [552], [553], [556], [557], [558], [564], [565], [566], [567], [578], [579], [582], [583], [584], [586], [587], [592], [593], [594] [2019-09-16 17:08:44,833 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:44,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:44,909 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:44,911 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 17:08:44,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:44,916 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:44,978 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:44,978 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:44,987 INFO L420 sIntCurrentIteration]: We unified 112 AI predicates to 112 [2019-09-16 17:08:44,987 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:44,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:44,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-16 17:08:44,989 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:44,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:44,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:44,990 INFO L87 Difference]: Start difference. First operand 1979 states and 2447 transitions. Second operand 2 states. [2019-09-16 17:08:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:44,990 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:44,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:44,991 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 113 [2019-09-16 17:08:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:44,991 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:44,991 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:44,991 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 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 17:08:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:44,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2019-09-16 17:08:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:44,993 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:44,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:44,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:44,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:44 BoogieIcfgContainer [2019-09-16 17:08:44,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:45,001 INFO L168 Benchmark]: Toolchain (without parser) took 6725.08 ms. Allocated memory was 131.1 MB in the beginning and 349.2 MB in the end (delta: 218.1 MB). Free memory was 84.2 MB in the beginning and 181.8 MB in the end (delta: -97.6 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,002 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.49 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 83.9 MB in the beginning and 161.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,005 INFO L168 Benchmark]: Boogie Preprocessor took 92.62 ms. Allocated memory is still 198.2 MB. Free memory was 161.6 MB in the beginning and 157.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,006 INFO L168 Benchmark]: RCFGBuilder took 1362.90 ms. Allocated memory was 198.2 MB in the beginning and 218.6 MB in the end (delta: 20.4 MB). Free memory was 157.1 MB in the beginning and 186.1 MB in the end (delta: -29.0 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,010 INFO L168 Benchmark]: TraceAbstraction took 4585.69 ms. Allocated memory was 218.6 MB in the beginning and 349.2 MB in the end (delta: 130.5 MB). Free memory was 184.7 MB in the beginning and 181.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 133.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:45,014 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 131.1 MB. Free memory was 104.0 MB in the beginning and 103.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.49 ms. Allocated memory was 131.1 MB in the beginning and 198.2 MB in the end (delta: 67.1 MB). Free memory was 83.9 MB in the beginning and 161.6 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.62 ms. Allocated memory is still 198.2 MB. Free memory was 161.6 MB in the beginning and 157.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1362.90 ms. Allocated memory was 198.2 MB in the beginning and 218.6 MB in the end (delta: 20.4 MB). Free memory was 157.1 MB in the beginning and 186.1 MB in the end (delta: -29.0 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4585.69 ms. Allocated memory was 218.6 MB in the beginning and 349.2 MB in the end (delta: 130.5 MB). Free memory was 184.7 MB in the beginning and 181.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 133.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 430]: 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 45 procedures, 267 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1683 SDtfs, 923 SDslu, 4029 SDs, 0 SdLazy, 1104 SolverSat, 148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1979occurred 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, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 167 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 728 NumberOfCodeBlocks, 728 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 98939 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...