/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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 20:28:45,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 20:28:45,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 20:28:45,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 20:28:45,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 20:28:45,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 20:28:45,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 20:28:45,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 20:28:45,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 20:28:45,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 20:28:45,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 20:28:45,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 20:28:45,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 20:28:45,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 20:28:45,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 20:28:45,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 20:28:45,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 20:28:45,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 20:28:45,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 20:28:45,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 20:28:45,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 20:28:45,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 20:28:45,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 20:28:45,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 20:28:45,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 20:28:45,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 20:28:45,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 20:28:45,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 20:28:45,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 20:28:45,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 20:28:45,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 20:28:45,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 20:28:45,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 20:28:45,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 20:28:45,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 20:28:45,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 20:28:45,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 20:28:45,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 20:28:45,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 20:28:45,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 20:28:45,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 20:28:45,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 20:28:45,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 20:28:45,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 20:28:45,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 20:28:45,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 20:28:45,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 20:28:45,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 20:28:45,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 20:28:45,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 20:28:45,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 20:28:45,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 20:28:45,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 20:28:45,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 20:28:45,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 20:28:45,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 20:28:45,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 20:28:45,868 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 20:28:45,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 20:28:45,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 20:28:45,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 20:28:45,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 20:28:45,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 20:28:45,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 20:28:45,869 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 [2020-09-04 20:28:46,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 20:28:46,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 20:28:46,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 20:28:46,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 20:28:46,325 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 20:28:46,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-09-04 20:28:46,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2f0e19d/e911326299964161904829a5c48d657b/FLAGa3943ab29 [2020-09-04 20:28:47,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 20:28:47,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-09-04 20:28:47,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2f0e19d/e911326299964161904829a5c48d657b/FLAGa3943ab29 [2020-09-04 20:28:47,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e2f0e19d/e911326299964161904829a5c48d657b [2020-09-04 20:28:47,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 20:28:47,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 20:28:47,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 20:28:47,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 20:28:47,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 20:28:47,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:28:47" (1/1) ... [2020-09-04 20:28:47,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:47, skipping insertion in model container [2020-09-04 20:28:47,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:28:47" (1/1) ... [2020-09-04 20:28:47,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 20:28:47,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 20:28:47,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:28:47,925 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 20:28:48,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:28:48,113 INFO L208 MainTranslator]: Completed translation [2020-09-04 20:28:48,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48 WrapperNode [2020-09-04 20:28:48,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 20:28:48,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 20:28:48,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 20:28:48,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 20:28:48,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... [2020-09-04 20:28:48,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 20:28:48,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 20:28:48,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 20:28:48,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 20:28:48,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 20:28:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 20:28:48,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 20:28:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 20:28:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:28:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 20:28:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 20:28:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 20:28:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 20:28:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 20:28:48,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 20:28:48,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 20:28:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 20:28:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 20:28:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 20:28:48,338 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 20:28:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 20:28:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 20:28:48,339 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 20:28:48,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 20:28:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 20:28:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 20:28:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 20:28:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 20:28:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 20:28:48,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 20:28:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 20:28:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 20:28:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 20:28:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 20:28:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 20:28:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 20:28:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 20:28:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 20:28:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 20:28:48,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 20:28:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 20:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 20:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 20:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 20:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 20:28:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 20:28:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 20:28:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 20:28:48,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 20:28:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 20:28:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 20:28:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 20:28:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 20:28:48,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 20:28:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 20:28:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 20:28:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 20:28:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 20:28:48,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 20:28:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 20:28:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 20:28:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 20:28:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 20:28:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 20:28:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 20:28:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 20:28:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 20:28:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 20:28:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 20:28:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 20:28:48,360 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 20:28:48,361 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 20:28:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 20:28:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 20:28:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 20:28:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 20:28:48,362 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 20:28:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 20:28:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 20:28:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 20:28:49,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 20:28:49,657 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 20:28:49,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:28:49 BoogieIcfgContainer [2020-09-04 20:28:49,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 20:28:49,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 20:28:49,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 20:28:49,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 20:28:49,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 08:28:47" (1/3) ... [2020-09-04 20:28:49,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1357585f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:28:49, skipping insertion in model container [2020-09-04 20:28:49,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:48" (2/3) ... [2020-09-04 20:28:49,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1357585f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:28:49, skipping insertion in model container [2020-09-04 20:28:49,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:28:49" (3/3) ... [2020-09-04 20:28:49,675 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-09-04 20:28:49,687 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 20:28:49,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 20:28:49,719 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 20:28:49,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 20:28:49,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 20:28:49,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 20:28:49,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 20:28:49,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 20:28:49,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 20:28:49,745 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 20:28:49,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 20:28:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states. [2020-09-04 20:28:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 20:28:49,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:28:49,795 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] [2020-09-04 20:28:49,795 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:28:49,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:28:49,803 INFO L82 PathProgramCache]: Analyzing trace with hash 317689357, now seen corresponding path program 1 times [2020-09-04 20:28:49,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:28:49,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208640719] [2020-09-04 20:28:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:28:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,654 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:28:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:28:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:28:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:28:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:28:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:28:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:28:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 20:28:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:28:50,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208640719] [2020-09-04 20:28:50,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:28:50,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 20:28:50,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507367967] [2020-09-04 20:28:50,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 20:28:50,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:28:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 20:28:50,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 20:28:50,911 INFO L87 Difference]: Start difference. First operand 332 states. Second operand 3 states. [2020-09-04 20:28:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:28:52,407 INFO L93 Difference]: Finished difference Result 531 states and 633 transitions. [2020-09-04 20:28:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 20:28:52,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 20:28:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:28:52,435 INFO L225 Difference]: With dead ends: 531 [2020-09-04 20:28:52,436 INFO L226 Difference]: Without dead ends: 324 [2020-09-04 20:28:52,442 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 [2020-09-04 20:28:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-09-04 20:28:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 281. [2020-09-04 20:28:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-04 20:28:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2020-09-04 20:28:52,637 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 142 [2020-09-04 20:28:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:28:52,638 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2020-09-04 20:28:52,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 20:28:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2020-09-04 20:28:52,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 20:28:52,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:28:52,648 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] [2020-09-04 20:28:52,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 20:28:52,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:28:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:28:52,649 INFO L82 PathProgramCache]: Analyzing trace with hash 645792609, now seen corresponding path program 1 times [2020-09-04 20:28:52,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:28:52,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275117029] [2020-09-04 20:28:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:28:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,130 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:28:53,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:28:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:28:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:28:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:28:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:28:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 20:28:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 20:28:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:28:53,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275117029] [2020-09-04 20:28:53,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:28:53,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 20:28:53,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284537157] [2020-09-04 20:28:53,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 20:28:53,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:28:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 20:28:53,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 20:28:53,216 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 4 states. [2020-09-04 20:28:53,873 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:28:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:28:55,163 INFO L93 Difference]: Finished difference Result 448 states and 508 transitions. [2020-09-04 20:28:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 20:28:55,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 20:28:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:28:55,169 INFO L225 Difference]: With dead ends: 448 [2020-09-04 20:28:55,169 INFO L226 Difference]: Without dead ends: 307 [2020-09-04 20:28:55,171 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 [2020-09-04 20:28:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-04 20:28:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2020-09-04 20:28:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-04 20:28:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2020-09-04 20:28:55,261 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 143 [2020-09-04 20:28:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:28:55,261 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2020-09-04 20:28:55,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 20:28:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2020-09-04 20:28:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 20:28:55,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:28:55,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:28:55,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 20:28:55,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:28:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:28:55,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1201875289, now seen corresponding path program 1 times [2020-09-04 20:28:55,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:28:55,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186011379] [2020-09-04 20:28:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:28:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,722 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:28:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:28:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:28:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:28:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:28:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:28:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 20:28:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 20:28:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:28:55,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186011379] [2020-09-04 20:28:55,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:28:55,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 20:28:55,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691278071] [2020-09-04 20:28:55,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 20:28:55,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:28:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 20:28:55,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 20:28:55,899 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 9 states. [2020-09-04 20:28:56,409 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:28:56,864 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:28:57,177 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:28:57,486 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:28:57,780 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:28:58,071 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:28:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:28:59,930 INFO L93 Difference]: Finished difference Result 468 states and 533 transitions. [2020-09-04 20:28:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 20:28:59,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 20:28:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:28:59,935 INFO L225 Difference]: With dead ends: 468 [2020-09-04 20:28:59,936 INFO L226 Difference]: Without dead ends: 307 [2020-09-04 20:28:59,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 20:28:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-04 20:29:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 271. [2020-09-04 20:29:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-04 20:29:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 294 transitions. [2020-09-04 20:29:00,025 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 294 transitions. Word has length 152 [2020-09-04 20:29:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:00,026 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 294 transitions. [2020-09-04 20:29:00,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 20:29:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 294 transitions. [2020-09-04 20:29:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-04 20:29:00,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:00,029 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] [2020-09-04 20:29:00,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 20:29:00,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:00,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:00,030 INFO L82 PathProgramCache]: Analyzing trace with hash -50746222, now seen corresponding path program 1 times [2020-09-04 20:29:00,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:00,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785698273] [2020-09-04 20:29:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,408 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:00,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 20:29:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 20:29:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 20:29:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:00,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785698273] [2020-09-04 20:29:00,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:00,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 20:29:00,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329638153] [2020-09-04 20:29:00,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 20:29:00,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:00,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 20:29:00,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 20:29:00,620 INFO L87 Difference]: Start difference. First operand 271 states and 294 transitions. Second operand 6 states. [2020-09-04 20:29:01,163 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:02,645 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:03,634 INFO L93 Difference]: Finished difference Result 605 states and 695 transitions. [2020-09-04 20:29:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 20:29:03,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-09-04 20:29:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:03,644 INFO L225 Difference]: With dead ends: 605 [2020-09-04 20:29:03,644 INFO L226 Difference]: Without dead ends: 444 [2020-09-04 20:29:03,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-04 20:29:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-09-04 20:29:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 385. [2020-09-04 20:29:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-09-04 20:29:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 415 transitions. [2020-09-04 20:29:03,829 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 415 transitions. Word has length 170 [2020-09-04 20:29:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:03,830 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 415 transitions. [2020-09-04 20:29:03,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 20:29:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 415 transitions. [2020-09-04 20:29:03,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-04 20:29:03,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:03,833 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] [2020-09-04 20:29:03,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 20:29:03,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:03,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1931965112, now seen corresponding path program 1 times [2020-09-04 20:29:03,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:03,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494846197] [2020-09-04 20:29:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,225 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 20:29:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 20:29:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 20:29:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:04,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494846197] [2020-09-04 20:29:04,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:04,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 20:29:04,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732284766] [2020-09-04 20:29:04,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 20:29:04,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:04,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 20:29:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 20:29:04,459 INFO L87 Difference]: Start difference. First operand 385 states and 415 transitions. Second operand 9 states. [2020-09-04 20:29:04,987 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:06,503 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:06,858 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:07,158 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:07,458 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:07,739 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:08,016 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:08,311 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:08,729 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:10,371 INFO L93 Difference]: Finished difference Result 989 states and 1134 transitions. [2020-09-04 20:29:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 20:29:10,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2020-09-04 20:29:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:10,376 INFO L225 Difference]: With dead ends: 989 [2020-09-04 20:29:10,377 INFO L226 Difference]: Without dead ends: 714 [2020-09-04 20:29:10,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 20:29:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-09-04 20:29:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 623. [2020-09-04 20:29:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-09-04 20:29:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 678 transitions. [2020-09-04 20:29:10,605 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 678 transitions. Word has length 194 [2020-09-04 20:29:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:10,605 INFO L479 AbstractCegarLoop]: Abstraction has 623 states and 678 transitions. [2020-09-04 20:29:10,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 20:29:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 678 transitions. [2020-09-04 20:29:10,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-04 20:29:10,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:10,610 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] [2020-09-04 20:29:10,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 20:29:10,610 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:10,611 INFO L82 PathProgramCache]: Analyzing trace with hash -455044551, now seen corresponding path program 1 times [2020-09-04 20:29:10,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:10,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15383102] [2020-09-04 20:29:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,052 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:11,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:29:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 20:29:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 20:29:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:11,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15383102] [2020-09-04 20:29:11,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:11,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:29:11,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116495676] [2020-09-04 20:29:11,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:29:11,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:11,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:29:11,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:29:11,257 INFO L87 Difference]: Start difference. First operand 623 states and 678 transitions. Second operand 10 states. [2020-09-04 20:29:11,782 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:13,441 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:13,725 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:14,052 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:14,353 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:14,688 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:15,029 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:15,340 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:15,692 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:17,179 INFO L93 Difference]: Finished difference Result 780 states and 900 transitions. [2020-09-04 20:29:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 20:29:17,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-09-04 20:29:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:17,185 INFO L225 Difference]: With dead ends: 780 [2020-09-04 20:29:17,185 INFO L226 Difference]: Without dead ends: 777 [2020-09-04 20:29:17,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 20:29:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-09-04 20:29:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 623. [2020-09-04 20:29:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-09-04 20:29:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 677 transitions. [2020-09-04 20:29:17,467 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 677 transitions. Word has length 199 [2020-09-04 20:29:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:17,468 INFO L479 AbstractCegarLoop]: Abstraction has 623 states and 677 transitions. [2020-09-04 20:29:17,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:29:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 677 transitions. [2020-09-04 20:29:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 20:29:17,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:17,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:17,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 20:29:17,473 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash 693896814, now seen corresponding path program 1 times [2020-09-04 20:29:17,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:17,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796189438] [2020-09-04 20:29:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,805 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:29:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:18,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 20:29:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 20:29:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:18,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796189438] [2020-09-04 20:29:18,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:18,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:29:18,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390716952] [2020-09-04 20:29:18,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:29:18,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:29:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:29:18,059 INFO L87 Difference]: Start difference. First operand 623 states and 677 transitions. Second operand 10 states. [2020-09-04 20:29:19,405 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:19,725 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:29:20,063 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 20:29:20,383 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:20,711 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:21,034 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:22,513 INFO L93 Difference]: Finished difference Result 1300 states and 1490 transitions. [2020-09-04 20:29:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 20:29:22,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-09-04 20:29:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:22,524 INFO L225 Difference]: With dead ends: 1300 [2020-09-04 20:29:22,524 INFO L226 Difference]: Without dead ends: 787 [2020-09-04 20:29:22,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 20:29:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-04 20:29:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 639. [2020-09-04 20:29:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-09-04 20:29:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 693 transitions. [2020-09-04 20:29:22,722 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 693 transitions. Word has length 200 [2020-09-04 20:29:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:22,722 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 693 transitions. [2020-09-04 20:29:22,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:29:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 693 transitions. [2020-09-04 20:29:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 20:29:22,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:22,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:22,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 20:29:22,726 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1107528206, now seen corresponding path program 1 times [2020-09-04 20:29:22,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:22,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124672110] [2020-09-04 20:29:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,174 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:29:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 20:29:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 20:29:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:23,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124672110] [2020-09-04 20:29:23,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:23,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 20:29:23,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29599704] [2020-09-04 20:29:23,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 20:29:23,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:23,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 20:29:23,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 20:29:23,507 INFO L87 Difference]: Start difference. First operand 639 states and 693 transitions. Second operand 13 states. [2020-09-04 20:29:24,204 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:24,510 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:29:24,785 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:25,082 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:25,371 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:26,288 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:26,612 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:26,940 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:27,274 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:27,576 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:29,493 INFO L93 Difference]: Finished difference Result 1338 states and 1546 transitions. [2020-09-04 20:29:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 20:29:29,495 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2020-09-04 20:29:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:29,501 INFO L225 Difference]: With dead ends: 1338 [2020-09-04 20:29:29,501 INFO L226 Difference]: Without dead ends: 809 [2020-09-04 20:29:29,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 20:29:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-04 20:29:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 651. [2020-09-04 20:29:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-04 20:29:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 705 transitions. [2020-09-04 20:29:29,707 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 705 transitions. Word has length 200 [2020-09-04 20:29:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:29,707 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 705 transitions. [2020-09-04 20:29:29,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 20:29:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 705 transitions. [2020-09-04 20:29:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 20:29:29,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:29,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:29,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 20:29:29,710 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1038010097, now seen corresponding path program 1 times [2020-09-04 20:29:29,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:29,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516454156] [2020-09-04 20:29:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,054 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:30,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 20:29:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 20:29:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-04 20:29:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:30,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516454156] [2020-09-04 20:29:30,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:30,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 20:29:30,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274519211] [2020-09-04 20:29:30,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 20:29:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 20:29:30,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 20:29:30,273 INFO L87 Difference]: Start difference. First operand 651 states and 705 transitions. Second operand 7 states. [2020-09-04 20:29:30,814 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:31,467 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:34,403 INFO L93 Difference]: Finished difference Result 1803 states and 2136 transitions. [2020-09-04 20:29:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 20:29:34,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-09-04 20:29:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:34,412 INFO L225 Difference]: With dead ends: 1803 [2020-09-04 20:29:34,412 INFO L226 Difference]: Without dead ends: 1262 [2020-09-04 20:29:34,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-04 20:29:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2020-09-04 20:29:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1089. [2020-09-04 20:29:34,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-09-04 20:29:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1221 transitions. [2020-09-04 20:29:34,910 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1221 transitions. Word has length 200 [2020-09-04 20:29:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:34,910 INFO L479 AbstractCegarLoop]: Abstraction has 1089 states and 1221 transitions. [2020-09-04 20:29:34,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 20:29:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1221 transitions. [2020-09-04 20:29:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 20:29:34,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:34,913 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] [2020-09-04 20:29:34,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 20:29:34,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -873176824, now seen corresponding path program 1 times [2020-09-04 20:29:34,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:34,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855035283] [2020-09-04 20:29:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:29:34,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:29:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:29:35,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:29:35,366 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 20:29:35,366 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 20:29:35,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 20:29:35,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 08:29:35 BoogieIcfgContainer [2020-09-04 20:29:35,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 20:29:35,705 INFO L168 Benchmark]: Toolchain (without parser) took 48353.96 ms. Allocated memory was 140.5 MB in the beginning and 883.4 MB in the end (delta: 742.9 MB). Free memory was 102.6 MB in the beginning and 475.5 MB in the end (delta: -372.8 MB). Peak memory consumption was 370.1 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,710 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.62 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 170.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,711 INFO L168 Benchmark]: Boogie Preprocessor took 112.28 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 166.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,713 INFO L168 Benchmark]: RCFGBuilder took 1436.89 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.9 MB in the beginning and 168.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,715 INFO L168 Benchmark]: TraceAbstraction took 46034.29 ms. Allocated memory was 234.9 MB in the beginning and 883.4 MB in the end (delta: 648.5 MB). Free memory was 167.1 MB in the beginning and 475.5 MB in the end (delta: -308.3 MB). Peak memory consumption was 340.2 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:35,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.62 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 170.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.28 ms. Allocated memory is still 204.5 MB. Free memory was 170.8 MB in the beginning and 166.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1436.89 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.9 MB in the beginning and 168.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46034.29 ms. Allocated memory was 234.9 MB in the beginning and 883.4 MB in the end (delta: 648.5 MB). Free memory was 167.1 MB in the beginning and 475.5 MB in the end (delta: -308.3 MB). Peak memory consumption was 340.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=172, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=172, head={0:0}, methaneLevelCritical=148, pumpRunning=135, systemActive=134, waterLevel=141] [L444] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=172, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=148, pumpRunning=135, systemActive=134, waterLevel=141] [L554] int pumpRunning = 0; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=148, pumpRunning=0, systemActive=134, waterLevel=141] [L555] int systemActive = 1; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=148, pumpRunning=0, systemActive=1, waterLevel=141] [L878] int waterLevel = 1; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=148, pumpRunning=0, systemActive=1, waterLevel=1] [L879] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=172, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=148, \old(pumpRunning)=135, \old(systemActive)=134, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L525] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L526] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L531] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L868] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] retValue_acc = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L872] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L532] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L532] tmp = valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, valid_product()=1, waterLevel=1] [L534] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L536] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L537] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L516] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] int splverifierCounter ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L779] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L781] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L782] int tmp___2 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L785] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L787] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L789] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L795] tmp = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L797] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L799] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE waterLevel < 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L799] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L805] tmp___0 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L807] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L809] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] COND FALSE !(\read(methaneLevelCritical)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L911] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L809] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L815] tmp___2 = __VERIFIER_nondet_int() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L817] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L830] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L568] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L642] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L616] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L634] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L590] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L740] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L741] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L958] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L961] COND FALSE !(waterLevel < 2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L965] retValue_acc = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L966] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L745] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L747] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L750] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L752] retValue_acc = tmp___0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L753] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L595] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp = isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L597] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L599] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L634] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L660] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L570] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L576] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L917] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L920] retValue_acc = methaneLevelCritical VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L921] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L49] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L51] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L694] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L697] retValue_acc = pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L698] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L73] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 649 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2384 SDtfs, 4292 SDslu, 3862 SDs, 0 SdLazy, 8626 SolverSat, 1332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 247 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1089occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 898 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1805 NumberOfCodeBlocks, 1805 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1591 ConstructedInterpolants, 0 QuantifiedInterpolants, 709971 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...