/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:25:37,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:25:37,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:25:37,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:25:37,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:25:37,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:25:37,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:25:37,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:25:37,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:25:37,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:25:37,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:25:37,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:25:37,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:25:37,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:25:37,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:25:37,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:25:37,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:25:37,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:25:37,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:25:37,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:25:37,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:25:37,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:25:37,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:25:37,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:25:37,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:25:37,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:25:37,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:25:37,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:25:37,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:25:37,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:25:37,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:25:37,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:25:37,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:25:37,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:25:37,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:25:37,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:25:37,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:25:37,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:25:37,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:25:37,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:25:37,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:25:37,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:25:37,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:25:37,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:25:37,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:25:37,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:25:37,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:25:37,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:25:37,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:25:37,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:25:37,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:25:37,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:25:37,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:25:37,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:25:37,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:25:37,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:25:37,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:25:37,463 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:25:37,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:25:37,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:25:37,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:37,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:25:37,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:25:37,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:25:37,464 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:25:37,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:25:37,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:25:37,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:25:37,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:25:37,753 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:25:37,754 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-07-07 12:25:37,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e51c00eb/04fe441985c7403aa1ff98ad3eb43db4/FLAG3efc5b54a [2020-07-07 12:25:38,316 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:25:38,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-07-07 12:25:38,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e51c00eb/04fe441985c7403aa1ff98ad3eb43db4/FLAG3efc5b54a [2020-07-07 12:25:38,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e51c00eb/04fe441985c7403aa1ff98ad3eb43db4 [2020-07-07 12:25:38,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:25:38,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:25:38,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:38,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:25:38,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:25:38,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:38" (1/1) ... [2020-07-07 12:25:38,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1cb88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:38, skipping insertion in model container [2020-07-07 12:25:38,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:38" (1/1) ... [2020-07-07 12:25:38,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:25:38,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:25:39,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:39,228 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:25:39,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:39,367 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:25:39,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39 WrapperNode [2020-07-07 12:25:39,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:39,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:25:39,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:25:39,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:25:39,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (1/1) ... [2020-07-07 12:25:39,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:25:39,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:25:39,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:25:39,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:25:39,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (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 [2020-07-07 12:25:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:25:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:25:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:25:39,591 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:25:39,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:25:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:25:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:25:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 12:25:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:25:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:25:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:25:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:25:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:25:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:25:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:25:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:25:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:25:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:25:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:25:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:25:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:25:39,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:25:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:25:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:25:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 12:25:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:25:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:25:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:25:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:25:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:25:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:25:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:25:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:25:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 12:25:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:25:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:25:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:25:39,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:25:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:39,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:25:39,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:25:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:25:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:25:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:25:39,610 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:25:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:25:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:25:39,611 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:25:39,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:25:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:25:40,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:25:40,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:25:40,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:40 BoogieIcfgContainer [2020-07-07 12:25:40,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:25:40,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:25:40,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:25:40,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:25:40,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:25:38" (1/3) ... [2020-07-07 12:25:40,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264d6f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:40, skipping insertion in model container [2020-07-07 12:25:40,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:39" (2/3) ... [2020-07-07 12:25:40,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264d6f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:40, skipping insertion in model container [2020-07-07 12:25:40,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:40" (3/3) ... [2020-07-07 12:25:40,781 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2020-07-07 12:25:40,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:25:40,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:25:40,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:25:40,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:25:40,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:25:40,835 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:25:40,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:25:40,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:25:40,836 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:25:40,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:25:40,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:25:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-07-07 12:25:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:25:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:40,881 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:40,881 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1497316138, now seen corresponding path program 1 times [2020-07-07 12:25:40,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:40,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675997867] [2020-07-07 12:25:40,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,594 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:41,830 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:41,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675997867] [2020-07-07 12:25:41,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:41,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:41,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574058112] [2020-07-07 12:25:41,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:41,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:41,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:41,869 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 3 states. [2020-07-07 12:25:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:43,278 INFO L93 Difference]: Finished difference Result 503 states and 599 transitions. [2020-07-07 12:25:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:43,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:43,299 INFO L225 Difference]: With dead ends: 503 [2020-07-07 12:25:43,299 INFO L226 Difference]: Without dead ends: 310 [2020-07-07 12:25:43,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-07 12:25:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 267. [2020-07-07 12:25:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-07-07 12:25:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2020-07-07 12:25:43,444 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 142 [2020-07-07 12:25:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:43,445 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2020-07-07 12:25:43,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2020-07-07 12:25:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:43,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:43,450 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:43,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:43,451 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash -316918305, now seen corresponding path program 1 times [2020-07-07 12:25:43,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:43,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929416439] [2020-07-07 12:25:43,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,812 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:43,881 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:43,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929416439] [2020-07-07 12:25:43,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:43,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:43,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260512139] [2020-07-07 12:25:43,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:43,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:43,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:43,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:43,884 INFO L87 Difference]: Start difference. First operand 267 states and 291 transitions. Second operand 4 states. [2020-07-07 12:25:44,507 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:45,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:45,481 INFO L93 Difference]: Finished difference Result 414 states and 466 transitions. [2020-07-07 12:25:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:45,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:45,491 INFO L225 Difference]: With dead ends: 414 [2020-07-07 12:25:45,491 INFO L226 Difference]: Without dead ends: 293 [2020-07-07 12:25:45,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:25:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-07 12:25:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-07-07 12:25:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-07 12:25:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2020-07-07 12:25:45,578 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 143 [2020-07-07 12:25:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:45,579 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2020-07-07 12:25:45,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2020-07-07 12:25:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:25:45,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:45,582 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:45,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:45,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:45,583 INFO L82 PathProgramCache]: Analyzing trace with hash -816638074, now seen corresponding path program 1 times [2020-07-07 12:25:45,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:45,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584790054] [2020-07-07 12:25:45,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:45,898 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:46,113 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:46,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584790054] [2020-07-07 12:25:46,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:46,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:46,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446554900] [2020-07-07 12:25:46,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:46,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:46,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:46,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:46,117 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 9 states. [2020-07-07 12:25:46,574 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:46,879 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:47,146 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:25:47,427 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:47,675 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:47,906 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:48,807 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:51,008 INFO L93 Difference]: Finished difference Result 682 states and 785 transitions. [2020-07-07 12:25:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:25:51,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:25:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:51,014 INFO L225 Difference]: With dead ends: 682 [2020-07-07 12:25:51,014 INFO L226 Difference]: Without dead ends: 535 [2020-07-07 12:25:51,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:25:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-07-07 12:25:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 468. [2020-07-07 12:25:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-07-07 12:25:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 524 transitions. [2020-07-07 12:25:51,217 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 524 transitions. Word has length 152 [2020-07-07 12:25:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:51,219 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 524 transitions. [2020-07-07 12:25:51,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 524 transitions. [2020-07-07 12:25:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:25:51,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:51,224 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:51,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:51,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:51,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:51,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1954752290, now seen corresponding path program 1 times [2020-07-07 12:25:51,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:51,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074048895] [2020-07-07 12:25:51,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,621 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:51,764 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:51,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074048895] [2020-07-07 12:25:51,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:51,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:51,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242865385] [2020-07-07 12:25:51,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:51,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:51,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:51,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:51,768 INFO L87 Difference]: Start difference. First operand 468 states and 524 transitions. Second operand 9 states. [2020-07-07 12:25:52,336 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:53,849 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:54,117 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:54,466 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:54,756 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:55,005 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:55,242 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:55,481 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:55,961 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:56,978 INFO L93 Difference]: Finished difference Result 1299 states and 1554 transitions. [2020-07-07 12:25:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:56,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:25:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:56,986 INFO L225 Difference]: With dead ends: 1299 [2020-07-07 12:25:56,986 INFO L226 Difference]: Without dead ends: 941 [2020-07-07 12:25:56,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-07-07 12:25:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 787. [2020-07-07 12:25:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-07-07 12:25:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 894 transitions. [2020-07-07 12:25:57,273 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 894 transitions. Word has length 161 [2020-07-07 12:25:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:57,274 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 894 transitions. [2020-07-07 12:25:57,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 894 transitions. [2020-07-07 12:25:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:25:57,279 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:57,279 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:57,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:57,280 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2058158355, now seen corresponding path program 1 times [2020-07-07 12:25:57,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:57,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912125471] [2020-07-07 12:25:57,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,675 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:57,869 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:57,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912125471] [2020-07-07 12:25:57,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:57,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:57,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154889445] [2020-07-07 12:25:57,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:57,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:57,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:57,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:57,872 INFO L87 Difference]: Start difference. First operand 787 states and 894 transitions. Second operand 10 states. [2020-07-07 12:25:58,555 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:59,987 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:00,225 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:00,505 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:00,843 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:01,153 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:01,748 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:01,996 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:02,323 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:03,496 INFO L93 Difference]: Finished difference Result 2028 states and 2497 transitions. [2020-07-07 12:26:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:26:03,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:26:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:03,506 INFO L225 Difference]: With dead ends: 2028 [2020-07-07 12:26:03,506 INFO L226 Difference]: Without dead ends: 1351 [2020-07-07 12:26:03,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:26:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-07-07 12:26:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1089. [2020-07-07 12:26:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-07-07 12:26:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1257 transitions. [2020-07-07 12:26:03,850 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1257 transitions. Word has length 166 [2020-07-07 12:26:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:03,851 INFO L479 AbstractCegarLoop]: Abstraction has 1089 states and 1257 transitions. [2020-07-07 12:26:03,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1257 transitions. [2020-07-07 12:26:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:26:03,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:03,856 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:03,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:26:03,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1232487903, now seen corresponding path program 1 times [2020-07-07 12:26:03,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:03,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171009305] [2020-07-07 12:26:03,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,123 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:04,391 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:04,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171009305] [2020-07-07 12:26:04,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:04,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:26:04,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579986067] [2020-07-07 12:26:04,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:26:04,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:04,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:26:04,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:26:04,394 INFO L87 Difference]: Start difference. First operand 1089 states and 1257 transitions. Second operand 13 states. [2020-07-07 12:26:04,951 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:05,221 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:05,433 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:05,648 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:05,867 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:06,703 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:06,978 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:07,251 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:07,530 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:07,767 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:09,320 INFO L93 Difference]: Finished difference Result 2484 states and 3093 transitions. [2020-07-07 12:26:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:09,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 195 [2020-07-07 12:26:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:09,334 INFO L225 Difference]: With dead ends: 2484 [2020-07-07 12:26:09,334 INFO L226 Difference]: Without dead ends: 1505 [2020-07-07 12:26:09,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:26:09,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-07-07 12:26:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1119. [2020-07-07 12:26:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-07-07 12:26:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1289 transitions. [2020-07-07 12:26:09,669 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1289 transitions. Word has length 195 [2020-07-07 12:26:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:09,669 INFO L479 AbstractCegarLoop]: Abstraction has 1119 states and 1289 transitions. [2020-07-07 12:26:09,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:26:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1289 transitions. [2020-07-07 12:26:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:26:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:09,674 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:09,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:26:09,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash -258617727, now seen corresponding path program 1 times [2020-07-07 12:26:09,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:09,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333821734] [2020-07-07 12:26:09,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,929 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:10,178 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:10,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333821734] [2020-07-07 12:26:10,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:10,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:10,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038687557] [2020-07-07 12:26:10,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:10,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:10,180 INFO L87 Difference]: Start difference. First operand 1119 states and 1289 transitions. Second operand 10 states. [2020-07-07 12:26:11,431 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:11,682 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:11,950 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:26:12,216 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:12,504 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:12,786 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:14,098 INFO L93 Difference]: Finished difference Result 2526 states and 3082 transitions. [2020-07-07 12:26:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:26:14,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-07-07 12:26:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:14,109 INFO L225 Difference]: With dead ends: 2526 [2020-07-07 12:26:14,109 INFO L226 Difference]: Without dead ends: 1517 [2020-07-07 12:26:14,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:26:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2020-07-07 12:26:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1151. [2020-07-07 12:26:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-07-07 12:26:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1321 transitions. [2020-07-07 12:26:14,494 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1321 transitions. Word has length 195 [2020-07-07 12:26:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:14,494 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1321 transitions. [2020-07-07 12:26:14,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1321 transitions. [2020-07-07 12:26:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 12:26:14,498 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:14,498 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:14,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:26:14,499 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1422185412, now seen corresponding path program 1 times [2020-07-07 12:26:14,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:14,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622289198] [2020-07-07 12:26:14,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,766 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:14,965 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:14,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622289198] [2020-07-07 12:26:14,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:14,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:26:14,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307602787] [2020-07-07 12:26:14,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:26:14,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:14,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:26:14,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:26:14,969 INFO L87 Difference]: Start difference. First operand 1151 states and 1321 transitions. Second operand 7 states. [2020-07-07 12:26:15,409 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:15,954 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:19,044 INFO L93 Difference]: Finished difference Result 3852 states and 4799 transitions. [2020-07-07 12:26:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:19,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-07-07 12:26:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:19,059 INFO L225 Difference]: With dead ends: 3852 [2020-07-07 12:26:19,059 INFO L226 Difference]: Without dead ends: 2811 [2020-07-07 12:26:19,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:26:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-07-07 12:26:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2307. [2020-07-07 12:26:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2307 states. [2020-07-07 12:26:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2677 transitions. [2020-07-07 12:26:20,220 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2677 transitions. Word has length 195 [2020-07-07 12:26:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:20,221 INFO L479 AbstractCegarLoop]: Abstraction has 2307 states and 2677 transitions. [2020-07-07 12:26:20,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:26:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2677 transitions. [2020-07-07 12:26:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:26:20,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:20,225 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:20,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:26:20,226 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:20,226 INFO L82 PathProgramCache]: Analyzing trace with hash -921073071, now seen corresponding path program 1 times [2020-07-07 12:26:20,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:20,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614295739] [2020-07-07 12:26:20,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:20,607 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:20,608 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:26:20,608 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:26:20,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:26:20,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:26:20 BoogieIcfgContainer [2020-07-07 12:26:20,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:26:20,648 INFO L168 Benchmark]: Toolchain (without parser) took 41959.52 ms. Allocated memory was 145.2 MB in the beginning and 1.0 GB in the end (delta: 891.3 MB). Free memory was 102.1 MB in the beginning and 724.0 MB in the end (delta: -621.8 MB). Peak memory consumption was 269.5 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,654 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.56 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 171.4 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,665 INFO L168 Benchmark]: Boogie Preprocessor took 154.54 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,666 INFO L168 Benchmark]: RCFGBuilder took 1249.40 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 167.3 MB in the beginning and 174.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,671 INFO L168 Benchmark]: TraceAbstraction took 39871.59 ms. Allocated memory was 237.5 MB in the beginning and 1.0 GB in the end (delta: 799.0 MB). Free memory was 174.7 MB in the beginning and 724.0 MB in the end (delta: -549.3 MB). Peak memory consumption was 249.7 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:20,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.56 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 171.4 MB in the end (delta: -69.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.54 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1249.40 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 167.3 MB in the beginning and 174.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39871.59 ms. Allocated memory was 237.5 MB in the beginning and 1.0 GB in the end (delta: 799.0 MB). Free memory was 174.7 MB in the beginning and 724.0 MB in the end (delta: -549.3 MB). Peak memory consumption was 249.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 704]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L121] int pumpRunning = 0; [L122] int systemActive = 1; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L773] int cleanupTimeShifts = 4; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; [L846] int retValue_acc ; [L847] int tmp ; [L851] FCALL select_helpers() [L852] FCALL select_features() [L853] CALL, EXPR valid_product() [L738] int retValue_acc ; [L741] retValue_acc = 1 [L742] return (retValue_acc); [L853] RET, EXPR valid_product() [L853] tmp = valid_product() [L855] COND TRUE \read(tmp) [L857] FCALL setup() [L858] CALL runTest() [L840] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp___0) [L77] CALL changeMethaneLevel() [L900] COND FALSE !(\read(methaneLevelCritical)) [L903] methaneLevelCritical = 1 [L77] RET changeMethaneLevel() [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L129] COND FALSE !(\read(pumpRunning)) [L136] COND TRUE \read(systemActive) [L138] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(\read(pumpRunning)) [L202] CALL processEnvironment__wrappee__highWaterSensor() [L158] int tmp ; [L161] COND TRUE ! pumpRunning [L163] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L950] int retValue_acc ; [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L163] RET, EXPR isHighWaterLevel() [L163] tmp = isHighWaterLevel() [L165] COND TRUE \read(tmp) [L167] CALL activatePump() [L212] pumpRunning = 1 [L167] RET activatePump() [L202] RET processEnvironment__wrappee__highWaterSensor() [L138] RET processEnvironment() [L144] CALL __utac_acc__Specification1_spec__1() [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isMethaneLevelCritical() [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); [L753] RET, EXPR isMethaneLevelCritical() [L753] tmp = isMethaneLevelCritical() [L755] COND TRUE \read(tmp) [L757] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L757] RET, EXPR isPumpRunning() [L757] tmp___0 = isPumpRunning() [L759] COND TRUE \read(tmp___0) [L761] CALL __automaton_fail() [L704] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 643 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 31.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2035 SDtfs, 3657 SDslu, 3710 SDs, 0 SdLazy, 8294 SolverSat, 1120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 299 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2307occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1818 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...