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_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:28,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:28,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:28,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:28,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:28,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:28,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:28,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:28,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:28,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:28,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:28,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:28,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:28,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:28,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:28,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:28,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:28,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:28,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:28,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:28,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:28,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:28,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:28,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:28,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:28,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:28,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:28,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:28,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:28,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:28,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:28,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:28,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:28,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:28,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:28,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:28,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:28,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:28,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:28,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:28,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:28,477 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 13:30:28,492 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:28,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:28,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:28,493 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:28,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:28,494 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:28,494 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:28,494 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:28,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:28,495 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:28,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:28,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:28,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:28,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:28,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:28,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:28,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:28,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:28,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:28,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:28,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:28,500 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:28,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:28,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:28,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:28,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:28,501 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:28,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:28,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:28,502 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:28,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:28,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:28,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:28,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:28,569 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:28,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-09-20 13:30:28,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bdc5cfd/10ca90397ee0440ca60e027f57bab854/FLAG234ba7d88 [2019-09-20 13:30:29,239 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:29,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-09-20 13:30:29,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bdc5cfd/10ca90397ee0440ca60e027f57bab854/FLAG234ba7d88 [2019-09-20 13:30:29,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bdc5cfd/10ca90397ee0440ca60e027f57bab854 [2019-09-20 13:30:29,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:29,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:29,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:29,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:29,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:29,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:29" (1/1) ... [2019-09-20 13:30:29,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38efe2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:29, skipping insertion in model container [2019-09-20 13:30:29,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:29" (1/1) ... [2019-09-20 13:30:29,573 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:29,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:30,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:30,126 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:30,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:30,286 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:30,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30 WrapperNode [2019-09-20 13:30:30,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:30,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:30,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:30,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:30,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (1/1) ... [2019-09-20 13:30:30,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:30,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:30,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:30,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:30,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (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 13:30:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:30:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:31,546 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:31,547 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:31,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:31 BoogieIcfgContainer [2019-09-20 13:30:31,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:31,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:31,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:31,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:31,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:29" (1/3) ... [2019-09-20 13:30:31,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f462a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:31, skipping insertion in model container [2019-09-20 13:30:31,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:30" (2/3) ... [2019-09-20 13:30:31,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f462a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:31, skipping insertion in model container [2019-09-20 13:30:31,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:31" (3/3) ... [2019-09-20 13:30:31,558 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2019-09-20 13:30:31,568 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:31,580 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:31,614 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:31,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:31,646 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:31,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:31,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:31,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:31,647 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:31,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:31,647 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2019-09-20 13:30:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:31,699 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:31,701 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 13:30:31,704 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2019-09-20 13:30:31,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:31,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:31,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:31,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:31,758 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:32,041 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 13:30:32,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:32,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:32,044 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:32,050 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:32,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:32,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:32,069 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2019-09-20 13:30:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:32,099 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2019-09-20 13:30:32,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:32,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:32,114 INFO L225 Difference]: With dead ends: 134 [2019-09-20 13:30:32,114 INFO L226 Difference]: Without dead ends: 123 [2019-09-20 13:30:32,116 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 13:30:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-09-20 13:30:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-09-20 13:30:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-20 13:30:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2019-09-20 13:30:32,201 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2019-09-20 13:30:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:32,203 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2019-09-20 13:30:32,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2019-09-20 13:30:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:32,213 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:32,213 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] [2019-09-20 13:30:32,216 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2019-09-20 13:30:32,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:32,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:32,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,227 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:32,382 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 13:30:32,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:32,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:32,383 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:32,385 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:32,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:32,386 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 3 states. [2019-09-20 13:30:32,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:32,400 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2019-09-20 13:30:32,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:32,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:32,403 INFO L225 Difference]: With dead ends: 114 [2019-09-20 13:30:32,403 INFO L226 Difference]: Without dead ends: 114 [2019-09-20 13:30:32,404 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 13:30:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-09-20 13:30:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-09-20 13:30:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-09-20 13:30:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2019-09-20 13:30:32,415 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2019-09-20 13:30:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:32,417 INFO L475 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2019-09-20 13:30:32,417 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2019-09-20 13:30:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-20 13:30:32,419 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:32,419 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] [2019-09-20 13:30:32,420 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:32,420 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2019-09-20 13:30:32,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:32,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:32,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,424 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:32,589 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 13:30:32,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:32,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:32,590 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:32,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:32,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:32,592 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 7 states. [2019-09-20 13:30:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:32,933 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2019-09-20 13:30:32,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:32,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-09-20 13:30:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:32,936 INFO L225 Difference]: With dead ends: 114 [2019-09-20 13:30:32,936 INFO L226 Difference]: Without dead ends: 114 [2019-09-20 13:30:32,937 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 13:30:32,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-09-20 13:30:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-09-20 13:30:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-09-20 13:30:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2019-09-20 13:30:32,946 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2019-09-20 13:30:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:32,947 INFO L475 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2019-09-20 13:30:32,947 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2019-09-20 13:30:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:30:32,949 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:32,949 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] [2019-09-20 13:30:32,950 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:32,950 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2019-09-20 13:30:32,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:32,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:32,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:32,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:33,046 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 13:30:33,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:33,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:33,047 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:33,047 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:33,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:33,048 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 5 states. [2019-09-20 13:30:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:33,576 INFO L93 Difference]: Finished difference Result 211 states and 246 transitions. [2019-09-20 13:30:33,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:33,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2019-09-20 13:30:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:33,579 INFO L225 Difference]: With dead ends: 211 [2019-09-20 13:30:33,580 INFO L226 Difference]: Without dead ends: 211 [2019-09-20 13:30:33,580 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-09-20 13:30:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 193. [2019-09-20 13:30:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-09-20 13:30:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2019-09-20 13:30:33,599 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2019-09-20 13:30:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:33,599 INFO L475 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2019-09-20 13:30:33,599 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2019-09-20 13:30:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-20 13:30:33,601 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:33,601 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] [2019-09-20 13:30:33,602 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2019-09-20 13:30:33,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:33,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:33,607 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:33,725 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 13:30:33,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:33,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:33,726 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:33,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:33,729 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 6 states. [2019-09-20 13:30:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:33,952 INFO L93 Difference]: Finished difference Result 312 states and 364 transitions. [2019-09-20 13:30:33,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:33,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2019-09-20 13:30:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:33,963 INFO L225 Difference]: With dead ends: 312 [2019-09-20 13:30:33,964 INFO L226 Difference]: Without dead ends: 312 [2019-09-20 13:30:33,964 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2019-09-20 13:30:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 308. [2019-09-20 13:30:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-09-20 13:30:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 360 transitions. [2019-09-20 13:30:34,008 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 360 transitions. Word has length 79 [2019-09-20 13:30:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,009 INFO L475 AbstractCegarLoop]: Abstraction has 308 states and 360 transitions. [2019-09-20 13:30:34,009 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 360 transitions. [2019-09-20 13:30:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:34,011 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,012 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] [2019-09-20 13:30:34,012 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,013 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2019-09-20 13:30:34,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,017 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,171 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 13:30:34,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:34,172 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:34,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:34,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:34,173 INFO L87 Difference]: Start difference. First operand 308 states and 360 transitions. Second operand 6 states. [2019-09-20 13:30:34,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,418 INFO L93 Difference]: Finished difference Result 472 states and 562 transitions. [2019-09-20 13:30:34,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:34,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2019-09-20 13:30:34,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,423 INFO L225 Difference]: With dead ends: 472 [2019-09-20 13:30:34,423 INFO L226 Difference]: Without dead ends: 472 [2019-09-20 13:30:34,424 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-09-20 13:30:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2019-09-20 13:30:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-09-20 13:30:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2019-09-20 13:30:34,471 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 83 [2019-09-20 13:30:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,471 INFO L475 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2019-09-20 13:30:34,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2019-09-20 13:30:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:34,473 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,474 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] [2019-09-20 13:30:34,474 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2019-09-20 13:30:34,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,477 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,532 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 13:30:34,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:34,532 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,533 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:34,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:34,534 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand 5 states. [2019-09-20 13:30:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,551 INFO L93 Difference]: Finished difference Result 464 states and 551 transitions. [2019-09-20 13:30:34,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:34,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-09-20 13:30:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,555 INFO L225 Difference]: With dead ends: 464 [2019-09-20 13:30:34,555 INFO L226 Difference]: Without dead ends: 464 [2019-09-20 13:30:34,556 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-09-20 13:30:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 458. [2019-09-20 13:30:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-09-20 13:30:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 544 transitions. [2019-09-20 13:30:34,574 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 544 transitions. Word has length 83 [2019-09-20 13:30:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,575 INFO L475 AbstractCegarLoop]: Abstraction has 458 states and 544 transitions. [2019-09-20 13:30:34,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 544 transitions. [2019-09-20 13:30:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:30:34,577 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,577 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] [2019-09-20 13:30:34,577 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,578 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2019-09-20 13:30:34,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,581 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,679 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 13:30:34,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:34,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:34,680 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:34,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:34,682 INFO L87 Difference]: Start difference. First operand 458 states and 544 transitions. Second operand 9 states. [2019-09-20 13:30:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:34,744 INFO L93 Difference]: Finished difference Result 475 states and 567 transitions. [2019-09-20 13:30:34,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:34,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-09-20 13:30:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:34,753 INFO L225 Difference]: With dead ends: 475 [2019-09-20 13:30:34,753 INFO L226 Difference]: Without dead ends: 475 [2019-09-20 13:30:34,754 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2019-09-20 13:30:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 465. [2019-09-20 13:30:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-09-20 13:30:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 551 transitions. [2019-09-20 13:30:34,784 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 551 transitions. Word has length 83 [2019-09-20 13:30:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:34,785 INFO L475 AbstractCegarLoop]: Abstraction has 465 states and 551 transitions. [2019-09-20 13:30:34,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 551 transitions. [2019-09-20 13:30:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-20 13:30:34,787 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:34,787 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] [2019-09-20 13:30:34,787 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2019-09-20 13:30:34,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:34,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:34,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:34,791 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:34,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:34,910 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:34,912 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 96 with the following transitions: [2019-09-20 13:30:34,914 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [99], [103], [104], [105], [108], [110], [113], [123], [125], [134], [138], [142], [145], [150], [156], [158], [161], [185], [187], [190], [195], [196], [198], [203], [205], [206], [207], [208], [209], [210], [216], [220], [262], [266], [267], [270], [271], [272], [295], [297], [298], [367], [368], [378], [380], [385], [387], [390], [392], [397], [404], [412], [413], [414], [415], [416], [417], [418], [419], [420], [452], [453], [454], [455], [460], [461], [464], [468], [469], [472], [473], [476], [477], [478], [486], [488], [489], [494], [495], [496], [497], [498], [499], [500], [502], [503], [504] [2019-09-20 13:30:34,963 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:34,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:35,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:35,055 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 13:30:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:35,060 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:35,108 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:35,108 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:35,111 INFO L420 sIntCurrentIteration]: We unified 94 AI predicates to 94 [2019-09-20 13:30:35,112 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:35,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:35,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:30:35,113 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:35,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:35,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:35,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:35,114 INFO L87 Difference]: Start difference. First operand 465 states and 551 transitions. Second operand 2 states. [2019-09-20 13:30:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:35,115 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:35,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:35,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 95 [2019-09-20 13:30:35,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:35,116 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:35,116 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:35,116 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 94 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 13:30:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:35,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2019-09-20 13:30:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:35,118 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:35,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:35,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:35,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:35 BoogieIcfgContainer [2019-09-20 13:30:35,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:35,128 INFO L168 Benchmark]: Toolchain (without parser) took 5571.58 ms. Allocated memory was 137.9 MB in the beginning and 266.9 MB in the end (delta: 129.0 MB). Free memory was 83.9 MB in the beginning and 116.2 MB in the end (delta: -32.3 MB). Peak memory consumption was 96.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,129 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.62 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 83.7 MB in the beginning and 165.0 MB in the end (delta: -81.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,131 INFO L168 Benchmark]: Boogie Preprocessor took 108.06 ms. Allocated memory is still 199.2 MB. Free memory was 165.0 MB in the beginning and 160.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,132 INFO L168 Benchmark]: RCFGBuilder took 1152.47 ms. Allocated memory is still 199.2 MB. Free memory was 160.7 MB in the beginning and 76.8 MB in the end (delta: 83.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,133 INFO L168 Benchmark]: TraceAbstraction took 3574.49 ms. Allocated memory was 199.2 MB in the beginning and 266.9 MB in the end (delta: 67.6 MB). Free memory was 76.8 MB in the beginning and 116.2 MB in the end (delta: -39.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:35,137 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 137.9 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.62 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 83.7 MB in the beginning and 165.0 MB in the end (delta: -81.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.06 ms. Allocated memory is still 199.2 MB. Free memory was 165.0 MB in the beginning and 160.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1152.47 ms. Allocated memory is still 199.2 MB. Free memory was 160.7 MB in the beginning and 76.8 MB in the end (delta: 83.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3574.49 ms. Allocated memory was 199.2 MB in the beginning and 266.9 MB in the end (delta: 67.6 MB). Free memory was 76.8 MB in the beginning and 116.2 MB in the end (delta: -39.4 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 922]: 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 38 procedures, 225 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1135 SDtfs, 504 SDslu, 2794 SDs, 0 SdLazy, 580 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=465occurred 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, 1.1808510638297873 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 650 NumberOfCodeBlocks, 650 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 76449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...