/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 16:26:00,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 16:26:00,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 16:26:00,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 16:26:00,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 16:26:00,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 16:26:00,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 16:26:00,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 16:26:00,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 16:26:00,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 16:26:00,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 16:26:00,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 16:26:00,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 16:26:00,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 16:26:00,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 16:26:00,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 16:26:00,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 16:26:00,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 16:26:00,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 16:26:00,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 16:26:00,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 16:26:00,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 16:26:00,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 16:26:00,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 16:26:00,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 16:26:00,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 16:26:00,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 16:26:00,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 16:26:00,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 16:26:00,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 16:26:00,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 16:26:00,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 16:26:00,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 16:26:00,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 16:26:00,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 16:26:00,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 16:26:00,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 16:26:00,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 16:26:00,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 16:26:00,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 16:26:00,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 16:26:00,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 16:26:00,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 16:26:00,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 16:26:00,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 16:26:00,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 16:26:00,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 16:26:00,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 16:26:00,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 16:26:00,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 16:26:00,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 16:26:00,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 16:26:00,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 16:26:00,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 16:26:00,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 16:26:00,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 16:26:00,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 16:26:00,370 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 16:26:00,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 16:26:00,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 16:26:00,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 16:26:00,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 16:26:00,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 16:26:00,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 16:26:00,372 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 16:26:00,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 16:26:00,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 16:26:00,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 16:26:00,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 16:26:00,652 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 16:26:00,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-17 16:26:00,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a8e45f2/d214c8c95ff44be5900be4399a32a93b/FLAG66f97aedb [2020-07-17 16:26:01,229 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 16:26:01,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-17 16:26:01,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a8e45f2/d214c8c95ff44be5900be4399a32a93b/FLAG66f97aedb [2020-07-17 16:26:01,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a8e45f2/d214c8c95ff44be5900be4399a32a93b [2020-07-17 16:26:01,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 16:26:01,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 16:26:01,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 16:26:01,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 16:26:01,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 16:26:01,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 04:26:01" (1/1) ... [2020-07-17 16:26:01,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcd9b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:01, skipping insertion in model container [2020-07-17 16:26:01,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 04:26:01" (1/1) ... [2020-07-17 16:26:01,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 16:26:01,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 16:26:02,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 16:26:02,126 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 16:26:02,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 16:26:02,335 INFO L208 MainTranslator]: Completed translation [2020-07-17 16:26:02,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02 WrapperNode [2020-07-17 16:26:02,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 16:26:02,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 16:26:02,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 16:26:02,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 16:26:02,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (1/1) ... [2020-07-17 16:26:02,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 16:26:02,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 16:26:02,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 16:26:02,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 16:26:02,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (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 [2020-07-17 16:26:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 16:26:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 16:26:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-17 16:26:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-17 16:26:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-17 16:26:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-17 16:26:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-17 16:26:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-17 16:26:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-17 16:26:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-17 16:26:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-17 16:26:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-17 16:26:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-17 16:26:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-17 16:26:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-17 16:26:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-17 16:26:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-17 16:26:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-17 16:26:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-17 16:26:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-17 16:26:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-17 16:26:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-17 16:26:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-17 16:26:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-17 16:26:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-17 16:26:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-17 16:26:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-17 16:26:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-17 16:26:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 16:26:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 16:26:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 16:26:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-17 16:26:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 16:26:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 16:26:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-17 16:26:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 16:26:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-17 16:26:02,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-17 16:26:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-17 16:26:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-17 16:26:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-17 16:26:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-17 16:26:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-17 16:26:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-17 16:26:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-17 16:26:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-17 16:26:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-17 16:26:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-17 16:26:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-17 16:26:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-17 16:26:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-17 16:26:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-17 16:26:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-17 16:26:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-17 16:26:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-17 16:26:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-17 16:26:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-17 16:26:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-17 16:26:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-17 16:26:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-17 16:26:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-17 16:26:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-17 16:26:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-17 16:26:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 16:26:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-17 16:26:02,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 16:26:02,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 16:26:02,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 16:26:03,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 16:26:03,900 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-17 16:26:03,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 04:26:03 BoogieIcfgContainer [2020-07-17 16:26:03,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 16:26:03,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 16:26:03,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 16:26:03,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 16:26:03,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 04:26:01" (1/3) ... [2020-07-17 16:26:03,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329ecdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 04:26:03, skipping insertion in model container [2020-07-17 16:26:03,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 04:26:02" (2/3) ... [2020-07-17 16:26:03,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329ecdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 04:26:03, skipping insertion in model container [2020-07-17 16:26:03,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 04:26:03" (3/3) ... [2020-07-17 16:26:03,920 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-07-17 16:26:03,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 16:26:03,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 16:26:03,952 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 16:26:03,974 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 16:26:03,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 16:26:03,975 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 16:26:03,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 16:26:03,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 16:26:03,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 16:26:03,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 16:26:03,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 16:26:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-07-17 16:26:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-17 16:26:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:04,021 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] [2020-07-17 16:26:04,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 826882234, now seen corresponding path program 1 times [2020-07-17 16:26:04,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:04,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426985294] [2020-07-17 16:26:04,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,798 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:04,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426985294] [2020-07-17 16:26:04,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:04,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 16:26:05,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021211888] [2020-07-17 16:26:05,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 16:26:05,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 16:26:05,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 16:26:05,025 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2020-07-17 16:26:06,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:06,652 INFO L93 Difference]: Finished difference Result 554 states and 662 transitions. [2020-07-17 16:26:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 16:26:06,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-17 16:26:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:06,672 INFO L225 Difference]: With dead ends: 554 [2020-07-17 16:26:06,673 INFO L226 Difference]: Without dead ends: 337 [2020-07-17 16:26:06,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 16:26:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-17 16:26:06,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 291. [2020-07-17 16:26:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-07-17 16:26:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 320 transitions. [2020-07-17 16:26:06,841 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 320 transitions. Word has length 142 [2020-07-17 16:26:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:06,842 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 320 transitions. [2020-07-17 16:26:06,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 16:26:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 320 transitions. [2020-07-17 16:26:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-17 16:26:06,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:06,847 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] [2020-07-17 16:26:06,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 16:26:06,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash -820599246, now seen corresponding path program 1 times [2020-07-17 16:26:06,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:06,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744606841] [2020-07-17 16:26:06,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,277 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:07,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744606841] [2020-07-17 16:26:07,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:07,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 16:26:07,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674091550] [2020-07-17 16:26:07,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 16:26:07,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:07,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 16:26:07,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 16:26:07,357 INFO L87 Difference]: Start difference. First operand 291 states and 320 transitions. Second operand 4 states. [2020-07-17 16:26:07,997 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:09,230 INFO L93 Difference]: Finished difference Result 461 states and 525 transitions. [2020-07-17 16:26:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 16:26:09,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-17 16:26:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:09,236 INFO L225 Difference]: With dead ends: 461 [2020-07-17 16:26:09,236 INFO L226 Difference]: Without dead ends: 320 [2020-07-17 16:26:09,238 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 [2020-07-17 16:26:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-07-17 16:26:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 281. [2020-07-17 16:26:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-17 16:26:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-07-17 16:26:09,335 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 143 [2020-07-17 16:26:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:09,336 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-07-17 16:26:09,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 16:26:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-07-17 16:26:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-17 16:26:09,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:09,339 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] [2020-07-17 16:26:09,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 16:26:09,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1576489327, now seen corresponding path program 1 times [2020-07-17 16:26:09,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:09,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318697791] [2020-07-17 16:26:09,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,664 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:09,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318697791] [2020-07-17 16:26:09,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:09,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 16:26:09,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410068918] [2020-07-17 16:26:09,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 16:26:09,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 16:26:09,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 16:26:09,866 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 10 states. [2020-07-17 16:26:10,405 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:10,740 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-17 16:26:11,007 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-17 16:26:11,291 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:11,542 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 16:26:11,788 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:12,738 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:15,693 INFO L93 Difference]: Finished difference Result 782 states and 917 transitions. [2020-07-17 16:26:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 16:26:15,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-17 16:26:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:15,700 INFO L225 Difference]: With dead ends: 782 [2020-07-17 16:26:15,700 INFO L226 Difference]: Without dead ends: 611 [2020-07-17 16:26:15,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-17 16:26:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-07-17 16:26:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 512. [2020-07-17 16:26:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-07-17 16:26:15,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 578 transitions. [2020-07-17 16:26:15,939 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 578 transitions. Word has length 156 [2020-07-17 16:26:15,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:15,940 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 578 transitions. [2020-07-17 16:26:15,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 16:26:15,941 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 578 transitions. [2020-07-17 16:26:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-17 16:26:15,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:15,945 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] [2020-07-17 16:26:15,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 16:26:15,945 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1953483698, now seen corresponding path program 1 times [2020-07-17 16:26:15,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:15,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635389525] [2020-07-17 16:26:15,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,240 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:16,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635389525] [2020-07-17 16:26:16,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:16,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 16:26:16,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209178249] [2020-07-17 16:26:16,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 16:26:16,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 16:26:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 16:26:16,378 INFO L87 Difference]: Start difference. First operand 512 states and 578 transitions. Second operand 9 states. [2020-07-17 16:26:17,011 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:18,199 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:18,468 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 16:26:18,860 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:19,158 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:19,434 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:19,785 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 16:26:20,082 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:20,713 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:22,102 INFO L93 Difference]: Finished difference Result 1442 states and 1734 transitions. [2020-07-17 16:26:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 16:26:22,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-17 16:26:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:22,119 INFO L225 Difference]: With dead ends: 1442 [2020-07-17 16:26:22,119 INFO L226 Difference]: Without dead ends: 1040 [2020-07-17 16:26:22,123 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 [2020-07-17 16:26:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-07-17 16:26:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 875. [2020-07-17 16:26:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-07-17 16:26:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1002 transitions. [2020-07-17 16:26:22,550 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1002 transitions. Word has length 161 [2020-07-17 16:26:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:22,551 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1002 transitions. [2020-07-17 16:26:22,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 16:26:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1002 transitions. [2020-07-17 16:26:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-17 16:26:22,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:22,559 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] [2020-07-17 16:26:22,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 16:26:22,560 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1356616012, now seen corresponding path program 1 times [2020-07-17 16:26:22,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:22,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121111303] [2020-07-17 16:26:22,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:22,926 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:23,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121111303] [2020-07-17 16:26:23,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:23,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 16:26:23,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659121644] [2020-07-17 16:26:23,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 16:26:23,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:23,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 16:26:23,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 16:26:23,179 INFO L87 Difference]: Start difference. First operand 875 states and 1002 transitions. Second operand 10 states. [2020-07-17 16:26:23,879 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:25,431 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:25,689 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 16:26:25,978 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:26,257 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-17 16:26:26,506 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:27,251 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:27,481 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:27,808 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:29,268 INFO L93 Difference]: Finished difference Result 2250 states and 2781 transitions. [2020-07-17 16:26:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 16:26:29,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-17 16:26:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:29,281 INFO L225 Difference]: With dead ends: 2250 [2020-07-17 16:26:29,282 INFO L226 Difference]: Without dead ends: 1485 [2020-07-17 16:26:29,285 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 [2020-07-17 16:26:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-07-17 16:26:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1217. [2020-07-17 16:26:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-07-17 16:26:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1409 transitions. [2020-07-17 16:26:29,652 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1409 transitions. Word has length 166 [2020-07-17 16:26:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:29,653 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1409 transitions. [2020-07-17 16:26:29,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 16:26:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1409 transitions. [2020-07-17 16:26:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-17 16:26:29,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:29,657 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, 1, 1, 1, 1] [2020-07-17 16:26:29,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 16:26:29,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:29,658 INFO L82 PathProgramCache]: Analyzing trace with hash 515628642, now seen corresponding path program 1 times [2020-07-17 16:26:29,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:29,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145183752] [2020-07-17 16:26:29,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:29,941 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:30,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145183752] [2020-07-17 16:26:30,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:30,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 16:26:30,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626783845] [2020-07-17 16:26:30,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 16:26:30,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 16:26:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-17 16:26:30,177 INFO L87 Difference]: Start difference. First operand 1217 states and 1409 transitions. Second operand 14 states. [2020-07-17 16:26:30,729 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:30,961 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-17 16:26:31,189 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:31,416 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-17 16:26:31,633 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:32,610 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:32,852 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-17 16:26:33,141 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:33,409 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-17 16:26:33,660 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:36,018 INFO L93 Difference]: Finished difference Result 2953 states and 3770 transitions. [2020-07-17 16:26:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 16:26:36,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-07-17 16:26:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:36,034 INFO L225 Difference]: With dead ends: 2953 [2020-07-17 16:26:36,034 INFO L226 Difference]: Without dead ends: 1846 [2020-07-17 16:26:36,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-17 16:26:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-07-17 16:26:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1247. [2020-07-17 16:26:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-07-17 16:26:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1441 transitions. [2020-07-17 16:26:36,484 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1441 transitions. Word has length 204 [2020-07-17 16:26:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:36,484 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1441 transitions. [2020-07-17 16:26:36,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 16:26:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1441 transitions. [2020-07-17 16:26:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-17 16:26:36,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:36,490 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, 1, 1, 1, 1] [2020-07-17 16:26:36,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 16:26:36,491 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash 101997250, now seen corresponding path program 1 times [2020-07-17 16:26:36,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:36,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254048967] [2020-07-17 16:26:36,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,790 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254048967] [2020-07-17 16:26:37,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 16:26:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80954253] [2020-07-17 16:26:37,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 16:26:37,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 16:26:37,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-17 16:26:37,020 INFO L87 Difference]: Start difference. First operand 1247 states and 1441 transitions. Second operand 11 states. [2020-07-17 16:26:38,544 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-17 16:26:38,804 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-17 16:26:39,092 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-17 16:26:39,379 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:39,670 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-17 16:26:39,903 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-17 16:26:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:41,956 INFO L93 Difference]: Finished difference Result 2995 states and 3739 transitions. [2020-07-17 16:26:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 16:26:41,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-07-17 16:26:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:41,968 INFO L225 Difference]: With dead ends: 2995 [2020-07-17 16:26:41,968 INFO L226 Difference]: Without dead ends: 1858 [2020-07-17 16:26:41,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-17 16:26:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-07-17 16:26:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1279. [2020-07-17 16:26:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-07-17 16:26:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1473 transitions. [2020-07-17 16:26:42,360 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1473 transitions. Word has length 204 [2020-07-17 16:26:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:42,361 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1473 transitions. [2020-07-17 16:26:42,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 16:26:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1473 transitions. [2020-07-17 16:26:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-17 16:26:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:42,365 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, 1, 1, 1, 1] [2020-07-17 16:26:42,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 16:26:42,366 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash 446110533, now seen corresponding path program 1 times [2020-07-17 16:26:42,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:42,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103312499] [2020-07-17 16:26:42,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,625 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-17 16:26:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 16:26:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 16:26:42,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103312499] [2020-07-17 16:26:42,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 16:26:42,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 16:26:42,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14646057] [2020-07-17 16:26:42,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 16:26:42,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 16:26:42,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 16:26:42,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-17 16:26:42,832 INFO L87 Difference]: Start difference. First operand 1279 states and 1473 transitions. Second operand 8 states. [2020-07-17 16:26:43,443 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:43,989 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-17 16:26:48,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 16:26:48,583 INFO L93 Difference]: Finished difference Result 4593 states and 5883 transitions. [2020-07-17 16:26:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 16:26:48,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-07-17 16:26:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 16:26:48,603 INFO L225 Difference]: With dead ends: 4593 [2020-07-17 16:26:48,603 INFO L226 Difference]: Without dead ends: 3424 [2020-07-17 16:26:48,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-07-17 16:26:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2020-07-17 16:26:49,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 2499. [2020-07-17 16:26:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-07-17 16:26:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2905 transitions. [2020-07-17 16:26:49,921 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2905 transitions. Word has length 204 [2020-07-17 16:26:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 16:26:49,921 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2905 transitions. [2020-07-17 16:26:49,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 16:26:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2905 transitions. [2020-07-17 16:26:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-17 16:26:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 16:26:49,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 16:26:49,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 16:26:49,930 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 16:26:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 16:26:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash 2057395573, now seen corresponding path program 1 times [2020-07-17 16:26:49,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 16:26:49,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691495757] [2020-07-17 16:26:49,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 16:26:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 16:26:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 16:26:50,293 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 16:26:50,293 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 16:26:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 16:26:50,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 04:26:50 BoogieIcfgContainer [2020-07-17 16:26:50,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 16:26:50,638 INFO L168 Benchmark]: Toolchain (without parser) took 49073.87 ms. Allocated memory was 137.4 MB in the beginning and 1.0 GB in the end (delta: 910.7 MB). Free memory was 99.6 MB in the beginning and 887.1 MB in the end (delta: -787.5 MB). Peak memory consumption was 987.0 MB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,642 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.6 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.02 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 167.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,651 INFO L168 Benchmark]: Boogie Preprocessor took 120.85 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,652 INFO L168 Benchmark]: RCFGBuilder took 1449.24 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 168.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,655 INFO L168 Benchmark]: TraceAbstraction took 46724.22 ms. Allocated memory was 232.8 MB in the beginning and 1.0 GB in the end (delta: 815.3 MB). Free memory was 168.9 MB in the beginning and 887.1 MB in the end (delta: -718.3 MB). Peak memory consumption was 960.8 MB. Max. memory is 7.1 GB. [2020-07-17 16:26:50,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 119.6 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.02 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 167.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.85 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1449.24 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.2 MB in the beginning and 168.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46724.22 ms. Allocated memory was 232.8 MB in the beginning and 1.0 GB in the end (delta: 815.3 MB). Free memory was 168.9 MB in the beginning and 887.1 MB in the end (delta: -718.3 MB). Peak memory consumption was 960.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=165, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=172, head={0:0}, methaneLevelCritical=151, pumpRunning=140, systemActive=139, waterLevel=144] [L490] int pumpRunning = 0; VAL [\old(cleanupTimeShifts)=172, \old(head)=165, \old(head)=176, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=172, head={0:0}, methaneLevelCritical=151, pumpRunning=0, systemActive=139, waterLevel=144] [L491] int systemActive = 1; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=165, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=172, head={0:0}, methaneLevelCritical=151, pumpRunning=0, systemActive=1, waterLevel=144] [L811] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=165, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=151, pumpRunning=0, systemActive=1, waterLevel=144] [L908] int waterLevel = 1; VAL [\old(cleanupTimeShifts)=172, \old(head)=165, \old(head)=176, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=151, pumpRunning=0, systemActive=1, waterLevel=1] [L909] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=172, \old(head)=165, \old(head)=176, \old(methaneLevelCritical)=151, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=144, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L885] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L889] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L891] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L766] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L769] retValue_acc = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L770] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L891] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L891] tmp = valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, valid_product()=1, waterLevel=1] [L893] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L895] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L896] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L413] int splverifierCounter ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L414] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L415] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L416] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] int tmp___2 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L420] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L422] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L424] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L430] tmp = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L432] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L434] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] COND TRUE waterLevel < 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L927] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L434] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L440] tmp___0 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L442] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L444] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L938] COND FALSE !(\read(methaneLevelCritical)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L941] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L444] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L450] tmp___2 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L452] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L454] CALL startSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L732] systemActive = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L454] RET startSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L469] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L498] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L505] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L507] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L579] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L582] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L553] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L571] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L527] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L677] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L678] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L988] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L991] COND FALSE !(waterLevel < 2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L995] retValue_acc = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L996] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L682] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] tmp = isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L684] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L687] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L689] retValue_acc = tmp___0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L690] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L532] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] tmp = isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L534] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L536] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L536] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L571] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L597] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L507] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L513] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L777] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L778] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L947] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L950] retValue_acc = methaneLevelCritical VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L951] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L782] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] tmp = isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L784] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L786] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L631] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L634] retValue_acc = pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L635] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L786] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L786] tmp___0 = isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L788] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L790] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L806] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 659 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 37.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2251 SDtfs, 4800 SDslu, 4387 SDs, 0 SdLazy, 10329 SolverSat, 1612 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2499occurred 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: 3.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1589 NumberOfCodeBlocks, 1589 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1372 ConstructedInterpolants, 0 QuantifiedInterpolants, 588911 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...