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_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:04,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:04,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:04,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:04,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:04,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:04,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:04,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:04,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:04,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:04,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:04,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:04,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:04,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:04,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:04,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:04,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:04,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:04,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:04,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:04,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:04,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:04,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:04,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:04,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:04,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:04,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:04,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:04,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:04,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:04,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:04,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:04,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:04,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:04,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:04,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:04,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:04,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:04,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:04,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:04,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:04,406 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 [2019-09-20 13:31:04,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:04,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:04,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:04,424 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:04,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:04,425 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:04,425 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:04,425 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:04,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:04,425 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:04,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:04,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:04,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:04,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:04,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:04,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:04,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:04,428 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:04,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:04,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:04,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:04,429 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:04,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:04,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:04,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:04,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:04,430 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:04,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:04,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:04,430 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:04,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:04,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:04,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:04,478 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:04,479 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:04,480 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-09-20 13:31:04,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022b1c935/7f689df528da499e8dfd672a5c2888d5/FLAGd8cc942e1 [2019-09-20 13:31:05,046 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:05,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-09-20 13:31:05,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022b1c935/7f689df528da499e8dfd672a5c2888d5/FLAGd8cc942e1 [2019-09-20 13:31:05,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022b1c935/7f689df528da499e8dfd672a5c2888d5 [2019-09-20 13:31:05,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:05,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:05,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:05,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:05,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:05,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:05" (1/1) ... [2019-09-20 13:31:05,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ffd47a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:05, skipping insertion in model container [2019-09-20 13:31:05,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:05" (1/1) ... [2019-09-20 13:31:05,390 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:05,447 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:06,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:06,025 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:06,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:06,175 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:06,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06 WrapperNode [2019-09-20 13:31:06,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:06,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:06,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:06,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:06,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (1/1) ... [2019-09-20 13:31:06,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:06,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:06,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:06,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:06,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (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 [2019-09-20 13:31:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:06,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:06,383 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:06,384 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:06,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:06,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:06,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:06,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:06,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:31:06,387 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:06,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:31:06,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:06,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:06,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:06,388 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:06,388 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:06,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:06,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:06,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:06,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:06,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:06,391 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:06,391 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:06,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:06,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:31:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-09-20 13:31:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:31:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:31:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:31:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:06,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:06,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:07,558 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:07,558 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:07,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:07 BoogieIcfgContainer [2019-09-20 13:31:07,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:07,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:07,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:07,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:07,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:05" (1/3) ... [2019-09-20 13:31:07,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:07, skipping insertion in model container [2019-09-20 13:31:07,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:06" (2/3) ... [2019-09-20 13:31:07,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:07, skipping insertion in model container [2019-09-20 13:31:07,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:07" (3/3) ... [2019-09-20 13:31:07,569 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2019-09-20 13:31:07,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:07,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:07,608 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:07,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:07,636 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:07,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:07,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:07,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:07,637 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:07,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:07,637 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2019-09-20 13:31:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:31:07,672 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:07,673 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] [2019-09-20 13:31:07,676 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2019-09-20 13:31:07,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:07,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:07,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:07,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:07,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:08,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:08,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:08,066 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:08,072 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:08,090 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 2 states. [2019-09-20 13:31:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:08,121 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2019-09-20 13:31:08,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:08,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:31:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:08,135 INFO L225 Difference]: With dead ends: 168 [2019-09-20 13:31:08,136 INFO L226 Difference]: Without dead ends: 157 [2019-09-20 13:31:08,137 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 [2019-09-20 13:31:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-09-20 13:31:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-09-20 13:31:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-09-20 13:31:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2019-09-20 13:31:08,193 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2019-09-20 13:31:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:08,194 INFO L475 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2019-09-20 13:31:08,194 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2019-09-20 13:31:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:31:08,198 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:08,198 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] [2019-09-20 13:31:08,198 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2019-09-20 13:31:08,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:08,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:08,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:08,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:08,202 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:08,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:08,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:08,318 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:08,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:08,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:08,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:08,320 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 3 states. [2019-09-20 13:31:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:08,342 INFO L93 Difference]: Finished difference Result 148 states and 173 transitions. [2019-09-20 13:31:08,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:08,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-20 13:31:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:08,348 INFO L225 Difference]: With dead ends: 148 [2019-09-20 13:31:08,350 INFO L226 Difference]: Without dead ends: 148 [2019-09-20 13:31:08,351 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 [2019-09-20 13:31:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-20 13:31:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-20 13:31:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-20 13:31:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2019-09-20 13:31:08,375 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2019-09-20 13:31:08,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:08,375 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2019-09-20 13:31:08,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2019-09-20 13:31:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:31:08,378 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:08,378 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] [2019-09-20 13:31:08,378 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:08,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2019-09-20 13:31:08,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:08,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:08,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:08,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:08,382 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:08,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:08,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:08,562 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:08,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:08,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:08,565 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 7 states. [2019-09-20 13:31:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:09,088 INFO L93 Difference]: Finished difference Result 148 states and 172 transitions. [2019-09-20 13:31:09,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:09,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2019-09-20 13:31:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:09,096 INFO L225 Difference]: With dead ends: 148 [2019-09-20 13:31:09,096 INFO L226 Difference]: Without dead ends: 148 [2019-09-20 13:31:09,097 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 [2019-09-20 13:31:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-09-20 13:31:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-09-20 13:31:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-09-20 13:31:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2019-09-20 13:31:09,128 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2019-09-20 13:31:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:09,128 INFO L475 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2019-09-20 13:31:09,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2019-09-20 13:31:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:09,136 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:09,136 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, 1, 1, 1, 1] [2019-09-20 13:31:09,138 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2019-09-20 13:31:09,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:09,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:09,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:09,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:09,143 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:09,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:09,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:31:09,326 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:09,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:31:09,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:31:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:31:09,327 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 5 states. [2019-09-20 13:31:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:09,936 INFO L93 Difference]: Finished difference Result 265 states and 302 transitions. [2019-09-20 13:31:09,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:09,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2019-09-20 13:31:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:09,943 INFO L225 Difference]: With dead ends: 265 [2019-09-20 13:31:09,944 INFO L226 Difference]: Without dead ends: 265 [2019-09-20 13:31:09,946 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-09-20 13:31:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 246. [2019-09-20 13:31:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-20 13:31:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2019-09-20 13:31:09,993 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2019-09-20 13:31:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:09,995 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2019-09-20 13:31:09,995 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:31:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2019-09-20 13:31:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-20 13:31:10,000 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:10,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:10,001 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2019-09-20 13:31:10,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:10,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:10,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:10,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:10,008 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:31:10,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:10,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:31:10,163 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:10,164 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:31:10,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:31:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:10,166 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 10 states. [2019-09-20 13:31:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:11,011 INFO L93 Difference]: Finished difference Result 581 states and 677 transitions. [2019-09-20 13:31:11,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:31:11,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-09-20 13:31:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:11,018 INFO L225 Difference]: With dead ends: 581 [2019-09-20 13:31:11,018 INFO L226 Difference]: Without dead ends: 581 [2019-09-20 13:31:11,019 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:11,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-09-20 13:31:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2019-09-20 13:31:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-09-20 13:31:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 660 transitions. [2019-09-20 13:31:11,078 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 660 transitions. Word has length 84 [2019-09-20 13:31:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:11,078 INFO L475 AbstractCegarLoop]: Abstraction has 571 states and 660 transitions. [2019-09-20 13:31:11,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:31:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 660 transitions. [2019-09-20 13:31:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-20 13:31:11,090 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:11,090 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:11,091 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2008036261, now seen corresponding path program 1 times [2019-09-20 13:31:11,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:11,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:11,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:11,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:11,096 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-20 13:31:11,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:11,250 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:11,252 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2019-09-20 13:31:11,256 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [54], [57], [59], [62], [68], [70], [71], [75], [78], [113], [129], [132], [134], [135], [138], [140], [143], [150], [153], [155], [164], [168], [172], [178], [180], [186], [188], [194], [197], [207], [208], [220], [222], [227], [230], [231], [233], [236], [240], [241], [242], [243], [246], [249], [253], [259], [286], [287], [290], [294], [297], [300], [302], [305], [315], [323], [326], [327], [342], [345], [346], [347], [370], [372], [373], [374], [375], [440], [441], [451], [459], [460], [461], [462], [463], [465], [466], [467], [468], [469], [470], [471], [472], [473], [507], [508], [509], [510], [513], [514], [521], [522], [525], [526], [527], [528], [529], [530], [531], [532], [533], [534], [535], [536], [541], [542], [543], [544], [555], [556], [559], [561], [562], [567], [568], [569] [2019-09-20 13:31:11,317 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:11,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:11,420 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:11,422 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. [2019-09-20 13:31:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:11,427 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:11,524 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:11,524 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:11,532 INFO L420 sIntCurrentIteration]: We unified 147 AI predicates to 147 [2019-09-20 13:31:11,533 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:11,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:11,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-20 13:31:11,534 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:11,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:11,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:11,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:11,535 INFO L87 Difference]: Start difference. First operand 571 states and 660 transitions. Second operand 2 states. [2019-09-20 13:31:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:11,536 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:11,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:11,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-09-20 13:31:11,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:11,536 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:11,536 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:11,537 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:11,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 148 [2019-09-20 13:31:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:11,538 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:11,538 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:11,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:11,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:11 BoogieIcfgContainer [2019-09-20 13:31:11,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:11,549 INFO L168 Benchmark]: Toolchain (without parser) took 6177.85 ms. Allocated memory was 132.6 MB in the beginning and 261.6 MB in the end (delta: 129.0 MB). Free memory was 87.9 MB in the beginning and 118.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,551 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.74 ms. Allocated memory was 132.6 MB in the beginning and 198.7 MB in the end (delta: 66.1 MB). Free memory was 87.6 MB in the beginning and 162.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,554 INFO L168 Benchmark]: Boogie Preprocessor took 112.95 ms. Allocated memory is still 198.7 MB. Free memory was 162.2 MB in the beginning and 157.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,556 INFO L168 Benchmark]: RCFGBuilder took 1270.56 ms. Allocated memory was 198.7 MB in the beginning and 222.8 MB in the end (delta: 24.1 MB). Free memory was 157.7 MB in the beginning and 186.3 MB in the end (delta: -28.6 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,558 INFO L168 Benchmark]: TraceAbstraction took 3984.96 ms. Allocated memory was 222.8 MB in the beginning and 261.6 MB in the end (delta: 38.8 MB). Free memory was 185.0 MB in the beginning and 118.6 MB in the end (delta: 66.4 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:11,570 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 804.74 ms. Allocated memory was 132.6 MB in the beginning and 198.7 MB in the end (delta: 66.1 MB). Free memory was 87.6 MB in the beginning and 162.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.95 ms. Allocated memory is still 198.7 MB. Free memory was 162.2 MB in the beginning and 157.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1270.56 ms. Allocated memory was 198.7 MB in the beginning and 222.8 MB in the end (delta: 24.1 MB). Free memory was 157.7 MB in the beginning and 186.3 MB in the end (delta: -28.6 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3984.96 ms. Allocated memory was 222.8 MB in the beginning and 261.6 MB in the end (delta: 38.8 MB). Free memory was 185.0 MB in the beginning and 118.6 MB in the end (delta: 66.4 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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, 256 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 952 SDtfs, 749 SDslu, 2088 SDs, 0 SdLazy, 845 SolverSat, 248 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8843537414965986 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 441 ConstructedInterpolants, 0 QuantifiedInterpolants, 59002 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 31/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...