/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:54:36,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:54:36,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:54:37,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:54:37,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:54:37,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:54:37,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:54:37,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:54:37,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:54:37,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:54:37,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:54:37,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:54:37,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:54:37,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:54:37,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:54:37,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:54:37,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:54:37,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:54:37,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:54:37,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:54:37,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:54:37,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:54:37,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:54:37,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:54:37,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:54:37,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:54:37,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:54:37,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:54:37,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:54:37,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:54:37,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:54:37,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:54:37,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:54:37,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:54:37,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:54:37,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:54:37,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:54:37,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:54:37,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:54:37,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:54:37,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:54:37,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:54:37,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:54:37,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:54:37,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:54:37,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:54:37,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:54:37,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:54:37,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:54:37,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:54:37,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:54:37,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:54:37,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:54:37,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:54:37,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:54:37,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:54:37,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:54:37,106 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:54:37,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:54:37,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:54:37,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:37,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:54:37,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:54:37,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:54:37,108 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:54:37,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:54:37,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:54:37,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:54:37,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:54:37,420 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:54:37,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-22 17:54:37,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a4523a4/64ab89514f63493fa7e737993f122513/FLAG9e15da425 [2020-08-22 17:54:37,995 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:54:37,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-08-22 17:54:38,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a4523a4/64ab89514f63493fa7e737993f122513/FLAG9e15da425 [2020-08-22 17:54:38,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76a4523a4/64ab89514f63493fa7e737993f122513 [2020-08-22 17:54:38,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:54:38,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:54:38,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:38,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:54:38,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:54:38,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:38" (1/1) ... [2020-08-22 17:54:38,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26654214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:38, skipping insertion in model container [2020-08-22 17:54:38,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:38" (1/1) ... [2020-08-22 17:54:38,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:54:38,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:54:38,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:38,850 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:54:38,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:39,009 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:54:39,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39 WrapperNode [2020-08-22 17:54:39,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:39,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:54:39,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:54:39,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:54:39,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:54:39,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:54:39,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:54:39,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:54:39,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:54:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:54:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:39,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:54:39,198 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:54:39,199 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:54:39,200 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:54:39,201 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:54:39,201 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:54:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:54:39,202 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:39,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:54:39,205 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:54:39,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:54:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:54:39,207 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:54:39,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:54:39,208 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:54:39,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:54:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:54:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:54:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:54:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:54:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:54:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:54:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:54:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:54:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:54:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:54:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:54:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:54:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:54:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:54:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:54:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:54:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:54:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:54:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:54:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:54:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:54:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:54:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:54:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:54:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:54:40,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:54:40,432 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:54:40,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:40 BoogieIcfgContainer [2020-08-22 17:54:40,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:54:40,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:54:40,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:54:40,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:54:40,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:54:38" (1/3) ... [2020-08-22 17:54:40,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e12e7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:40, skipping insertion in model container [2020-08-22 17:54:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (2/3) ... [2020-08-22 17:54:40,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e12e7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:40, skipping insertion in model container [2020-08-22 17:54:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:40" (3/3) ... [2020-08-22 17:54:40,451 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-08-22 17:54:40,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:54:40,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:54:40,484 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:54:40,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:54:40,507 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:54:40,507 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:54:40,507 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:54:40,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:54:40,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:54:40,508 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:54:40,508 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:54:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states. [2020-08-22 17:54:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:54:40,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:40,549 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] [2020-08-22 17:54:40,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2111431698, now seen corresponding path program 1 times [2020-08-22 17:54:40,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:40,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329549395] [2020-08-22 17:54:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:40,632 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,284 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:41,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329549395] [2020-08-22 17:54:41,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:41,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:54:41,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761224940] [2020-08-22 17:54:41,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:54:41,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:54:41,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:41,517 INFO L87 Difference]: Start difference. First operand 299 states. Second operand 3 states. [2020-08-22 17:54:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:42,893 INFO L93 Difference]: Finished difference Result 464 states and 551 transitions. [2020-08-22 17:54:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:54:42,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:54:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:42,913 INFO L225 Difference]: With dead ends: 464 [2020-08-22 17:54:42,913 INFO L226 Difference]: Without dead ends: 290 [2020-08-22 17:54:42,918 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 [2020-08-22 17:54:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-08-22 17:54:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 248. [2020-08-22 17:54:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 17:54:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-08-22 17:54:43,054 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 142 [2020-08-22 17:54:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:43,055 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-08-22 17:54:43,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:54:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-08-22 17:54:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:54:43,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:43,060 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] [2020-08-22 17:54:43,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:54:43,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1885599248, now seen corresponding path program 1 times [2020-08-22 17:54:43,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:43,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932387063] [2020-08-22 17:54:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:43,065 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,479 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:54:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:43,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932387063] [2020-08-22 17:54:43,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:43,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:54:43,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3718922] [2020-08-22 17:54:43,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:54:43,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:43,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:54:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:54:43,577 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-08-22 17:54:44,223 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:45,105 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2020-08-22 17:54:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:54:45,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:54:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:45,111 INFO L225 Difference]: With dead ends: 377 [2020-08-22 17:54:45,111 INFO L226 Difference]: Without dead ends: 273 [2020-08-22 17:54:45,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:54:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-22 17:54:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 238. [2020-08-22 17:54:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 17:54:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 255 transitions. [2020-08-22 17:54:45,250 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 255 transitions. Word has length 143 [2020-08-22 17:54:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:45,250 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 255 transitions. [2020-08-22 17:54:45,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:54:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 255 transitions. [2020-08-22 17:54:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 17:54:45,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:45,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:45,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:54:45,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:45,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2133556188, now seen corresponding path program 1 times [2020-08-22 17:54:45,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:45,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413048294] [2020-08-22 17:54:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:45,263 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,620 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:54:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:54:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:45,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413048294] [2020-08-22 17:54:45,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:45,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:45,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588209269] [2020-08-22 17:54:45,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:45,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:45,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:45,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:45,781 INFO L87 Difference]: Start difference. First operand 238 states and 255 transitions. Second operand 10 states. [2020-08-22 17:54:46,441 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:46,806 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:47,029 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:54:47,296 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:47,545 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:47,786 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:49,365 INFO L93 Difference]: Finished difference Result 423 states and 484 transitions. [2020-08-22 17:54:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:54:49,366 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 17:54:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:49,374 INFO L225 Difference]: With dead ends: 423 [2020-08-22 17:54:49,374 INFO L226 Difference]: Without dead ends: 295 [2020-08-22 17:54:49,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:54:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-08-22 17:54:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 238. [2020-08-22 17:54:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-22 17:54:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 254 transitions. [2020-08-22 17:54:49,455 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 254 transitions. Word has length 156 [2020-08-22 17:54:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:49,456 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 254 transitions. [2020-08-22 17:54:49,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:54:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 254 transitions. [2020-08-22 17:54:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-08-22 17:54:49,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:49,458 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] [2020-08-22 17:54:49,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:54:49,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash -874630023, now seen corresponding path program 1 times [2020-08-22 17:54:49,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:49,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220122994] [2020-08-22 17:54:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:49,463 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,752 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 17:54:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-22 17:54:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:49,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220122994] [2020-08-22 17:54:49,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:49,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:54:49,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688737314] [2020-08-22 17:54:49,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:54:49,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:49,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:54:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:54:49,920 INFO L87 Difference]: Start difference. First operand 238 states and 254 transitions. Second operand 7 states. [2020-08-22 17:54:50,464 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:51,924 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:52,761 INFO L93 Difference]: Finished difference Result 594 states and 701 transitions. [2020-08-22 17:54:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 17:54:52,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-08-22 17:54:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:52,766 INFO L225 Difference]: With dead ends: 594 [2020-08-22 17:54:52,767 INFO L226 Difference]: Without dead ends: 466 [2020-08-22 17:54:52,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-22 17:54:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-22 17:54:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 339. [2020-08-22 17:54:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-08-22 17:54:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 365 transitions. [2020-08-22 17:54:52,915 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 365 transitions. Word has length 164 [2020-08-22 17:54:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:52,916 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 365 transitions. [2020-08-22 17:54:52,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:54:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 365 transitions. [2020-08-22 17:54:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-22 17:54:52,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:52,919 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] [2020-08-22 17:54:52,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:54:52,920 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1983899201, now seen corresponding path program 1 times [2020-08-22 17:54:52,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:52,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300616422] [2020-08-22 17:54:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:52,924 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,233 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 17:54:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-22 17:54:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:53,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300616422] [2020-08-22 17:54:53,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:53,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 17:54:53,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853827998] [2020-08-22 17:54:53,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 17:54:53,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:53,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 17:54:53,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:54:53,487 INFO L87 Difference]: Start difference. First operand 339 states and 365 transitions. Second operand 13 states. [2020-08-22 17:54:54,032 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:54,303 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:54:54,545 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:54,783 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:54,999 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:55,787 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:56,044 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:56,316 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:56,569 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:56,793 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:58,092 INFO L93 Difference]: Finished difference Result 700 states and 824 transitions. [2020-08-22 17:54:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:54:58,093 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 188 [2020-08-22 17:54:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:58,097 INFO L225 Difference]: With dead ends: 700 [2020-08-22 17:54:58,097 INFO L226 Difference]: Without dead ends: 471 [2020-08-22 17:54:58,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:54:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-22 17:54:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 345. [2020-08-22 17:54:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-22 17:54:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 371 transitions. [2020-08-22 17:54:58,191 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 371 transitions. Word has length 188 [2020-08-22 17:54:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:58,191 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 371 transitions. [2020-08-22 17:54:58,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 17:54:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 371 transitions. [2020-08-22 17:54:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-22 17:54:58,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:58,194 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] [2020-08-22 17:54:58,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:54:58,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:58,195 INFO L82 PathProgramCache]: Analyzing trace with hash 694378847, now seen corresponding path program 1 times [2020-08-22 17:54:58,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:58,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18359162] [2020-08-22 17:54:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:58,198 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,470 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:54:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:54:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:54:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 17:54:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-08-22 17:54:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:58,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18359162] [2020-08-22 17:54:58,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:58,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:54:58,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240116611] [2020-08-22 17:54:58,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:54:58,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:58,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:54:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:54:58,615 INFO L87 Difference]: Start difference. First operand 345 states and 371 transitions. Second operand 10 states. [2020-08-22 17:54:59,078 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:00,296 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:00,546 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:00,822 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:01,042 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:01,581 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:01,871 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:02,105 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:02,426 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:03,611 INFO L93 Difference]: Finished difference Result 1004 states and 1212 transitions. [2020-08-22 17:55:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:03,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-08-22 17:55:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:03,618 INFO L225 Difference]: With dead ends: 1004 [2020-08-22 17:55:03,618 INFO L226 Difference]: Without dead ends: 769 [2020-08-22 17:55:03,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-08-22 17:55:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 543. [2020-08-22 17:55:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-08-22 17:55:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 590 transitions. [2020-08-22 17:55:03,807 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 590 transitions. Word has length 188 [2020-08-22 17:55:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:03,808 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 590 transitions. [2020-08-22 17:55:03,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:03,808 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 590 transitions. [2020-08-22 17:55:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 17:55:03,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:03,811 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] [2020-08-22 17:55:03,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:55:03,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:03,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1001952340, now seen corresponding path program 1 times [2020-08-22 17:55:03,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:03,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790535867] [2020-08-22 17:55:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:03,815 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,148 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:04,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-22 17:55:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 17:55:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:04,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790535867] [2020-08-22 17:55:04,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:55:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313706627] [2020-08-22 17:55:04,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:55:04,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:55:04,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:55:04,304 INFO L87 Difference]: Start difference. First operand 543 states and 590 transitions. Second operand 11 states. [2020-08-22 17:55:04,773 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:06,258 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:06,509 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:06,836 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:08,018 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:08,274 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:08,522 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:08,761 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:08,985 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:09,414 INFO L93 Difference]: Finished difference Result 904 states and 1117 transitions. [2020-08-22 17:55:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 17:55:09,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-08-22 17:55:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:09,438 INFO L225 Difference]: With dead ends: 904 [2020-08-22 17:55:09,438 INFO L226 Difference]: Without dead ends: 901 [2020-08-22 17:55:09,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-08-22 17:55:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-08-22 17:55:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 543. [2020-08-22 17:55:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-08-22 17:55:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 589 transitions. [2020-08-22 17:55:09,599 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 589 transitions. Word has length 193 [2020-08-22 17:55:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:09,599 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 589 transitions. [2020-08-22 17:55:09,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:55:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 589 transitions. [2020-08-22 17:55:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 17:55:09,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:09,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:09,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:55:09,603 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:09,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:09,604 INFO L82 PathProgramCache]: Analyzing trace with hash 280021704, now seen corresponding path program 1 times [2020-08-22 17:55:09,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:09,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169717713] [2020-08-22 17:55:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:09,607 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,867 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 17:55:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 17:55:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:10,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169717713] [2020-08-22 17:55:10,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:10,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:55:10,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50318531] [2020-08-22 17:55:10,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:55:10,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:10,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:55:10,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:55:10,073 INFO L87 Difference]: Start difference. First operand 543 states and 589 transitions. Second operand 11 states. [2020-08-22 17:55:11,268 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:11,526 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:11,788 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:55:12,019 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:12,271 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:12,503 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:14,004 INFO L93 Difference]: Finished difference Result 1348 states and 1650 transitions. [2020-08-22 17:55:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:55:14,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2020-08-22 17:55:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:14,010 INFO L225 Difference]: With dead ends: 1348 [2020-08-22 17:55:14,011 INFO L226 Difference]: Without dead ends: 915 [2020-08-22 17:55:14,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:55:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-22 17:55:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 559. [2020-08-22 17:55:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-08-22 17:55:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 605 transitions. [2020-08-22 17:55:14,210 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 605 transitions. Word has length 216 [2020-08-22 17:55:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:14,210 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 605 transitions. [2020-08-22 17:55:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:55:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 605 transitions. [2020-08-22 17:55:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-08-22 17:55:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:14,217 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:14,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:55:14,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash -801927029, now seen corresponding path program 1 times [2020-08-22 17:55:14,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:14,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591585035] [2020-08-22 17:55:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:14,221 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,520 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-22 17:55:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-22 17:55:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:14,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591585035] [2020-08-22 17:55:14,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:14,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:55:14,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216002152] [2020-08-22 17:55:14,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:55:14,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:14,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:55:14,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:55:14,709 INFO L87 Difference]: Start difference. First operand 559 states and 605 transitions. Second operand 8 states. [2020-08-22 17:55:15,196 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:15,757 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:18,788 INFO L93 Difference]: Finished difference Result 2007 states and 2519 transitions. [2020-08-22 17:55:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 17:55:18,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-08-22 17:55:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:18,798 INFO L225 Difference]: With dead ends: 2007 [2020-08-22 17:55:18,799 INFO L226 Difference]: Without dead ends: 1558 [2020-08-22 17:55:18,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-08-22 17:55:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-08-22 17:55:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 981. [2020-08-22 17:55:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-08-22 17:55:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1093 transitions. [2020-08-22 17:55:19,342 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1093 transitions. Word has length 216 [2020-08-22 17:55:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:19,343 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1093 transitions. [2020-08-22 17:55:19,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:55:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1093 transitions. [2020-08-22 17:55:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-08-22 17:55:19,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:19,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:19,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:55:19,348 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1521198117, now seen corresponding path program 1 times [2020-08-22 17:55:19,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:19,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799597743] [2020-08-22 17:55:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:19,355 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,674 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 17:55:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:55:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:55:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 17:55:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 17:55:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-22 17:55:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:20,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799597743] [2020-08-22 17:55:20,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:20,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-08-22 17:55:20,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043205305] [2020-08-22 17:55:20,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-22 17:55:20,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-22 17:55:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:55:20,181 INFO L87 Difference]: Start difference. First operand 981 states and 1093 transitions. Second operand 21 states. [2020-08-22 17:55:20,708 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:21,052 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:21,304 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:55:21,551 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:21,821 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:22,054 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:22,900 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:24,290 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:24,564 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:24,918 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:25,220 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:25,482 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:25,741 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:26,002 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:26,277 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:26,579 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:26,946 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:27,264 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:27,558 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:28,161 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:28,843 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-08-22 17:55:29,362 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:32,369 INFO L93 Difference]: Finished difference Result 2374 states and 2860 transitions. [2020-08-22 17:55:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 17:55:32,370 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 221 [2020-08-22 17:55:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:32,380 INFO L225 Difference]: With dead ends: 2374 [2020-08-22 17:55:32,380 INFO L226 Difference]: Without dead ends: 1503 [2020-08-22 17:55:32,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=737, Invalid=3169, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 17:55:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-08-22 17:55:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 938. [2020-08-22 17:55:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2020-08-22 17:55:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1031 transitions. [2020-08-22 17:55:32,731 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1031 transitions. Word has length 221 [2020-08-22 17:55:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:32,732 INFO L479 AbstractCegarLoop]: Abstraction has 938 states and 1031 transitions. [2020-08-22 17:55:32,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-22 17:55:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1031 transitions. [2020-08-22 17:55:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-08-22 17:55:32,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:32,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:32,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:55:32,737 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:32,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:32,738 INFO L82 PathProgramCache]: Analyzing trace with hash 296618272, now seen corresponding path program 1 times [2020-08-22 17:55:32,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:32,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601601398] [2020-08-22 17:55:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:32,781 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:32,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:32,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:33,321 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:55:33,321 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:55:33,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 17:55:33,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:55:33 BoogieIcfgContainer [2020-08-22 17:55:33,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:55:33,364 INFO L168 Benchmark]: Toolchain (without parser) took 55042.50 ms. Allocated memory was 146.3 MB in the beginning and 931.7 MB in the end (delta: 785.4 MB). Free memory was 101.0 MB in the beginning and 823.5 MB in the end (delta: -722.5 MB). Peak memory consumption was 777.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,365 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.74 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 170.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,366 INFO L168 Benchmark]: Boogie Preprocessor took 96.73 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 166.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,367 INFO L168 Benchmark]: RCFGBuilder took 1335.63 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 176.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,368 INFO L168 Benchmark]: TraceAbstraction took 52918.60 ms. Allocated memory was 237.5 MB in the beginning and 931.7 MB in the end (delta: 694.2 MB). Free memory was 176.4 MB in the beginning and 823.5 MB in the end (delta: -647.1 MB). Peak memory consumption was 761.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 685.74 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 170.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.73 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 166.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1335.63 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.4 MB in the beginning and 176.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52918.60 ms. Allocated memory was 237.5 MB in the beginning and 931.7 MB in the end (delta: 694.2 MB). Free memory was 176.4 MB in the beginning and 823.5 MB in the end (delta: -647.1 MB). Peak memory consumption was 761.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) [L532] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L532] RET waterRise() [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L552] CALL startSystem() [L755] systemActive = 1 [L552] RET startSystem() [L565] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L493] int retValue_acc ; [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L627] RET activatePump() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) [L604] RET __utac_acc__Specification1_spec__1() [L565] RET timeShift() [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) [L542] CALL changeMethaneLevel() [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 [L542] RET changeMethaneLevel() [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L552] CALL startSystem() [L755] systemActive = 1 [L552] RET startSystem() [L565] CALL timeShift() [L589] COND TRUE \read(pumpRunning) [L591] CALL lowerWaterLevel() [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 [L591] RET lowerWaterLevel() [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(! pumpRunning) [L636] FCALL processEnvironment__wrappee__base() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L779] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L779] RET, EXPR isPumpRunning() [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) [L783] CALL __automaton_fail() [L764] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 44.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2534 SDtfs, 6819 SDslu, 6323 SDs, 0 SdLazy, 12757 SolverSat, 2164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 299 SyntacticMatches, 3 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=981occurred 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, 10 MinimizatonAttempts, 2469 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...