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_spec1_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:01,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:01,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:01,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:01,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:01,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:01,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:01,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:01,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:01,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:01,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:01,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:01,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:01,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:01,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:01,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:01,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:01,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:01,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:01,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:01,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:01,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:01,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:01,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:01,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:01,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:01,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:01,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:01,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:01,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:01,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:01,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:01,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:01,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:01,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:01,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:01,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:01,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:01,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:01,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:01,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:01,373 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 17:08:01,390 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:01,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:01,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:01,391 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:01,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:01,392 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:01,392 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:01,392 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:01,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:01,392 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:01,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:01,395 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:01,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:01,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:01,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:01,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:01,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:01,396 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:01,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:01,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:01,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:01,398 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:01,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:01,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:01,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:01,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:01,399 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:01,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:01,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:01,400 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:01,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:01,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:01,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:01,459 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:01,459 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:01,460 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-09-16 17:08:01,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89fe07d2/fa1b3ba8c08b4bf2829bff0118bce7a7/FLAG8a8f11431 [2019-09-16 17:08:02,029 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:02,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-09-16 17:08:02,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89fe07d2/fa1b3ba8c08b4bf2829bff0118bce7a7/FLAG8a8f11431 [2019-09-16 17:08:02,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89fe07d2/fa1b3ba8c08b4bf2829bff0118bce7a7 [2019-09-16 17:08:02,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:02,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:02,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:02,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:02,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:02,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:02" (1/1) ... [2019-09-16 17:08:02,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a67fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:02, skipping insertion in model container [2019-09-16 17:08:02,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:02" (1/1) ... [2019-09-16 17:08:02,401 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:02,468 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:02,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:02,959 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:03,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:03,100 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:03,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03 WrapperNode [2019-09-16 17:08:03,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:03,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:03,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:03,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:03,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (1/1) ... [2019-09-16 17:08:03,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:03,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:03,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:03,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:03,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (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 17:08:03,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:03,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:03,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:03,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:03,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:03,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:03,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:03,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:03,276 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:03,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:08:03,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:03,279 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-16 17:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:03,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:03,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:04,612 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:04,612 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:04,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:04 BoogieIcfgContainer [2019-09-16 17:08:04,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:04,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:04,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:04,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:04,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:02" (1/3) ... [2019-09-16 17:08:04,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddd5a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:04, skipping insertion in model container [2019-09-16 17:08:04,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:03" (2/3) ... [2019-09-16 17:08:04,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddd5a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:04, skipping insertion in model container [2019-09-16 17:08:04,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:04" (3/3) ... [2019-09-16 17:08:04,623 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product63.cil.c [2019-09-16 17:08:04,634 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:04,645 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:04,659 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:04,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:04,679 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:04,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:04,680 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:04,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:04,680 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:04,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:04,681 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-09-16 17:08:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-16 17:08:04,713 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:04,714 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] [2019-09-16 17:08:04,717 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1613581470, now seen corresponding path program 1 times [2019-09-16 17:08:04,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:04,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:04,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:04,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:04,775 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:05,079 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 17:08:05,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:05,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:05,082 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:05,088 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:05,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:05,108 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 2 states. [2019-09-16 17:08:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:05,141 INFO L93 Difference]: Finished difference Result 167 states and 199 transitions. [2019-09-16 17:08:05,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:05,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-16 17:08:05,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:05,156 INFO L225 Difference]: With dead ends: 167 [2019-09-16 17:08:05,157 INFO L226 Difference]: Without dead ends: 156 [2019-09-16 17:08:05,159 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 17:08:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-09-16 17:08:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2019-09-16 17:08:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-16 17:08:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2019-09-16 17:08:05,217 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 46 [2019-09-16 17:08:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:05,218 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2019-09-16 17:08:05,218 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2019-09-16 17:08:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-16 17:08:05,222 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:05,222 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] [2019-09-16 17:08:05,223 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1476283687, now seen corresponding path program 1 times [2019-09-16 17:08:05,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:05,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:05,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,227 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:05,347 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 17:08:05,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:05,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:05,348 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:05,349 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:05,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:05,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:05,351 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand 3 states. [2019-09-16 17:08:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:05,385 INFO L93 Difference]: Finished difference Result 147 states and 175 transitions. [2019-09-16 17:08:05,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:05,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-16 17:08:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:05,392 INFO L225 Difference]: With dead ends: 147 [2019-09-16 17:08:05,394 INFO L226 Difference]: Without dead ends: 147 [2019-09-16 17:08:05,395 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 17:08:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-16 17:08:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-16 17:08:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-16 17:08:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2019-09-16 17:08:05,424 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 47 [2019-09-16 17:08:05,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:05,425 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2019-09-16 17:08:05,425 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2019-09-16 17:08:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-16 17:08:05,430 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:05,430 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 17:08:05,430 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:05,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 474549322, now seen corresponding path program 1 times [2019-09-16 17:08:05,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:05,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:05,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:05,438 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:05,644 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 17:08:05,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:05,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:05,645 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:05,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:05,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:05,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:05,648 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand 7 states. [2019-09-16 17:08:06,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:06,234 INFO L93 Difference]: Finished difference Result 320 states and 388 transitions. [2019-09-16 17:08:06,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:06,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-09-16 17:08:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:06,239 INFO L225 Difference]: With dead ends: 320 [2019-09-16 17:08:06,240 INFO L226 Difference]: Without dead ends: 320 [2019-09-16 17:08:06,240 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 17:08:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-09-16 17:08:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 312. [2019-09-16 17:08:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-09-16 17:08:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 382 transitions. [2019-09-16 17:08:06,273 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 382 transitions. Word has length 51 [2019-09-16 17:08:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:06,274 INFO L475 AbstractCegarLoop]: Abstraction has 312 states and 382 transitions. [2019-09-16 17:08:06,274 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 382 transitions. [2019-09-16 17:08:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-16 17:08:06,277 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:06,277 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 17:08:06,277 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:06,278 INFO L82 PathProgramCache]: Analyzing trace with hash 912243430, now seen corresponding path program 1 times [2019-09-16 17:08:06,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:06,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:06,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,281 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:06,445 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 17:08:06,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:06,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:06,446 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:06,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:06,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:06,447 INFO L87 Difference]: Start difference. First operand 312 states and 382 transitions. Second operand 6 states. [2019-09-16 17:08:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:06,696 INFO L93 Difference]: Finished difference Result 585 states and 720 transitions. [2019-09-16 17:08:06,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:06,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-16 17:08:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:06,703 INFO L225 Difference]: With dead ends: 585 [2019-09-16 17:08:06,703 INFO L226 Difference]: Without dead ends: 585 [2019-09-16 17:08:06,704 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 17:08:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-09-16 17:08:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 579. [2019-09-16 17:08:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-16 17:08:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 714 transitions. [2019-09-16 17:08:06,767 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 714 transitions. Word has length 57 [2019-09-16 17:08:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:06,767 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 714 transitions. [2019-09-16 17:08:06,767 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 714 transitions. [2019-09-16 17:08:06,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-09-16 17:08:06,776 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:06,777 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] [2019-09-16 17:08:06,777 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1983295510, now seen corresponding path program 1 times [2019-09-16 17:08:06,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:06,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:06,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:06,782 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:06,916 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 17:08:06,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:06,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:06,917 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:06,917 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:06,918 INFO L87 Difference]: Start difference. First operand 579 states and 714 transitions. Second operand 6 states. [2019-09-16 17:08:07,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:07,171 INFO L93 Difference]: Finished difference Result 809 states and 989 transitions. [2019-09-16 17:08:07,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:07,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-09-16 17:08:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:07,176 INFO L225 Difference]: With dead ends: 809 [2019-09-16 17:08:07,177 INFO L226 Difference]: Without dead ends: 809 [2019-09-16 17:08:07,177 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 17:08:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2019-09-16 17:08:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 791. [2019-09-16 17:08:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-09-16 17:08:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 967 transitions. [2019-09-16 17:08:07,221 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 967 transitions. Word has length 61 [2019-09-16 17:08:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:07,222 INFO L475 AbstractCegarLoop]: Abstraction has 791 states and 967 transitions. [2019-09-16 17:08:07,222 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 967 transitions. [2019-09-16 17:08:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-16 17:08:07,225 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:07,226 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] [2019-09-16 17:08:07,226 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:07,226 INFO L82 PathProgramCache]: Analyzing trace with hash -575696431, now seen corresponding path program 1 times [2019-09-16 17:08:07,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:07,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,230 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:07,360 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 17:08:07,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:07,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:07,361 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:07,362 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:07,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:07,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:07,363 INFO L87 Difference]: Start difference. First operand 791 states and 967 transitions. Second operand 6 states. [2019-09-16 17:08:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:07,404 INFO L93 Difference]: Finished difference Result 819 states and 999 transitions. [2019-09-16 17:08:07,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:07,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-16 17:08:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:07,413 INFO L225 Difference]: With dead ends: 819 [2019-09-16 17:08:07,413 INFO L226 Difference]: Without dead ends: 819 [2019-09-16 17:08:07,413 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 17:08:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-09-16 17:08:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2019-09-16 17:08:07,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-09-16 17:08:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 987 transitions. [2019-09-16 17:08:07,454 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 987 transitions. Word has length 103 [2019-09-16 17:08:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:07,455 INFO L475 AbstractCegarLoop]: Abstraction has 811 states and 987 transitions. [2019-09-16 17:08:07,455 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 987 transitions. [2019-09-16 17:08:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-16 17:08:07,463 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:07,463 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] [2019-09-16 17:08:07,464 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:07,464 INFO L82 PathProgramCache]: Analyzing trace with hash -928784813, now seen corresponding path program 1 times [2019-09-16 17:08:07,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:07,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:07,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,467 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:07,562 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 17:08:07,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:07,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:08:07,563 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:07,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:08:07,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:08:07,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:08:07,565 INFO L87 Difference]: Start difference. First operand 811 states and 987 transitions. Second operand 8 states. [2019-09-16 17:08:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:07,601 INFO L93 Difference]: Finished difference Result 839 states and 1015 transitions. [2019-09-16 17:08:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:07,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-16 17:08:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:07,607 INFO L225 Difference]: With dead ends: 839 [2019-09-16 17:08:07,607 INFO L226 Difference]: Without dead ends: 839 [2019-09-16 17:08:07,608 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 17:08:07,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-09-16 17:08:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 827. [2019-09-16 17:08:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-09-16 17:08:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1003 transitions. [2019-09-16 17:08:07,643 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1003 transitions. Word has length 103 [2019-09-16 17:08:07,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:07,644 INFO L475 AbstractCegarLoop]: Abstraction has 827 states and 1003 transitions. [2019-09-16 17:08:07,644 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:08:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1003 transitions. [2019-09-16 17:08:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-16 17:08:07,647 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:07,647 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] [2019-09-16 17:08:07,648 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:07,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:07,648 INFO L82 PathProgramCache]: Analyzing trace with hash 204405780, now seen corresponding path program 1 times [2019-09-16 17:08:07,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:07,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:07,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:07,652 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:07,735 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 17:08:07,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:07,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:08:07,736 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:07,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:08:07,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:08:07,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:08:07,737 INFO L87 Difference]: Start difference. First operand 827 states and 1003 transitions. Second operand 4 states. [2019-09-16 17:08:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:07,996 INFO L93 Difference]: Finished difference Result 1858 states and 2335 transitions. [2019-09-16 17:08:07,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:08:07,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-16 17:08:07,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:08,006 INFO L225 Difference]: With dead ends: 1858 [2019-09-16 17:08:08,007 INFO L226 Difference]: Without dead ends: 1858 [2019-09-16 17:08:08,007 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 17:08:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2019-09-16 17:08:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1827. [2019-09-16 17:08:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2019-09-16 17:08:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2263 transitions. [2019-09-16 17:08:08,101 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2263 transitions. Word has length 103 [2019-09-16 17:08:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:08,102 INFO L475 AbstractCegarLoop]: Abstraction has 1827 states and 2263 transitions. [2019-09-16 17:08:08,102 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:08:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2263 transitions. [2019-09-16 17:08:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:08:08,106 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:08,107 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] [2019-09-16 17:08:08,107 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:08,107 INFO L82 PathProgramCache]: Analyzing trace with hash -796699686, now seen corresponding path program 1 times [2019-09-16 17:08:08,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:08,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:08,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:08,110 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:08,257 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 17:08:08,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:08,258 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:08,259 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 108 with the following transitions: [2019-09-16 17:08:08,261 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [103], [119], [123], [124], [125], [140], [143], [145], [154], [158], [162], [165], [170], [173], [178], [181], [197], [198], [210], [212], [217], [220], [221], [223], [228], [230], [231], [234], [235], [241], [245], [285], [288], [290], [293], [303], [306], [310], [311], [314], [315], [330], [333], [334], [335], [358], [360], [361], [428], [429], [434], [436], [439], [443], [445], [448], [450], [453], [466], [467], [468], [469], [470], [471], [472], [473], [474], [516], [517], [518], [519], [520], [521], [524], [528], [529], [530], [531], [532], [533], [536], [537], [538], [544], [545], [546], [547], [558], [559], [562], [564], [565], [570], [571], [572], [574], [575], [576], [577], [578] [2019-09-16 17:08:08,306 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:08,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:08,387 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:08,389 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 68 root evaluator evaluations with a maximum evaluation depth of 0. Performed 68 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-16 17:08:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:08,394 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:08,449 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:08,450 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:08,454 INFO L420 sIntCurrentIteration]: We unified 106 AI predicates to 106 [2019-09-16 17:08:08,454 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:08,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:08,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-16 17:08:08,455 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:08,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:08,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:08,456 INFO L87 Difference]: Start difference. First operand 1827 states and 2263 transitions. Second operand 2 states. [2019-09-16 17:08:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:08,457 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:08,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:08,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 107 [2019-09-16 17:08:08,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:08,458 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:08,458 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:08,458 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 17:08:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:08,459 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2019-09-16 17:08:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:08,459 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:08,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:08,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:08,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:08 BoogieIcfgContainer [2019-09-16 17:08:08,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:08,468 INFO L168 Benchmark]: Toolchain (without parser) took 6084.71 ms. Allocated memory was 141.0 MB in the beginning and 313.5 MB in the end (delta: 172.5 MB). Free memory was 87.8 MB in the beginning and 199.7 MB in the end (delta: -111.9 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,469 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.03 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 87.6 MB in the beginning and 164.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,471 INFO L168 Benchmark]: Boogie Preprocessor took 93.38 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 160.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,472 INFO L168 Benchmark]: RCFGBuilder took 1418.58 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 188.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,473 INFO L168 Benchmark]: TraceAbstraction took 3850.19 ms. Allocated memory was 228.1 MB in the beginning and 313.5 MB in the end (delta: 85.5 MB). Free memory was 188.9 MB in the beginning and 199.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:08,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.03 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 87.6 MB in the beginning and 164.7 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.38 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 160.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1418.58 ms. Allocated memory was 200.8 MB in the beginning and 228.1 MB in the end (delta: 27.3 MB). Free memory was 160.6 MB in the beginning and 188.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3850.19 ms. Allocated memory was 228.1 MB in the beginning and 313.5 MB in the end (delta: 85.5 MB). Free memory was 188.9 MB in the beginning and 199.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 381]: 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 43 procedures, 258 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1630 SDtfs, 787 SDslu, 4078 SDs, 0 SdLazy, 632 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred 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, 1.028301886792453 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 83 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 678 NumberOfCodeBlocks, 678 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 84399 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...