/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_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:03:23,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:03:23,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:03:23,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:03:23,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:03:23,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:03:23,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:03:23,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:03:23,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:03:23,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:03:23,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:03:23,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:03:23,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:03:23,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:03:23,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:03:23,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:03:23,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:03:23,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:03:23,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:03:23,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:03:23,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:03:23,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:03:23,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:03:23,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:03:23,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:03:23,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:03:23,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:03:23,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:03:23,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:03:23,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:03:23,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:03:23,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:03:23,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:03:23,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:03:23,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:03:23,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:03:23,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:03:23,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:03:23,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:03:23,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:03:23,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:03:23,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:03:23,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:03:23,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:03:23,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:03:23,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:03:23,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:03:23,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:03:23,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:03:23,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:03:23,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:03:23,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:03:23,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:03:23,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:03:23,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:03:23,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:03:23,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:03:23,165 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:03:23,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:03:23,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:03:23,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:23,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:03:23,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:03:23,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:03:23,167 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:03:23,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:03:23,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:03:23,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:03:23,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:03:23,602 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:03:23,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-04 15:03:23,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebfd2dd0c/94018fc416b640aa99f7d06c54021c0e/FLAG13030d65f [2020-09-04 15:03:24,249 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:03:24,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-04 15:03:24,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebfd2dd0c/94018fc416b640aa99f7d06c54021c0e/FLAG13030d65f [2020-09-04 15:03:24,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebfd2dd0c/94018fc416b640aa99f7d06c54021c0e [2020-09-04 15:03:24,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:03:24,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:03:24,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:24,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:03:24,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:03:24,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:24" (1/1) ... [2020-09-04 15:03:24,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d6e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:24, skipping insertion in model container [2020-09-04 15:03:24,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:03:24" (1/1) ... [2020-09-04 15:03:24,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:03:24,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:03:24,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:24,984 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:03:25,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:03:25,265 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:03:25,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25 WrapperNode [2020-09-04 15:03:25,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:03:25,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:03:25,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:03:25,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:03:25,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... [2020-09-04 15:03:25,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:03:25,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:03:25,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:03:25,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:03:25,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:03:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:03:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:03:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:25,441 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:03:25,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:03:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:03:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:03:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:03:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:03:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:03:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:03:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:03:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:03:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:03:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:03:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:03:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:03:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:03:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:03:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:03:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:03:25,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:03:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:03:25,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:03:25,452 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:03:25,453 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:03:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:03:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:03:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:03:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:03:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:03:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:03:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:03:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:03:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:03:26,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:03:26,616 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:03:26,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:26 BoogieIcfgContainer [2020-09-04 15:03:26,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:03:26,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:03:26,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:03:26,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:03:26,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:03:24" (1/3) ... [2020-09-04 15:03:26,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7d9596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:26, skipping insertion in model container [2020-09-04 15:03:26,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:03:25" (2/3) ... [2020-09-04 15:03:26,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7d9596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:03:26, skipping insertion in model container [2020-09-04 15:03:26,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:03:26" (3/3) ... [2020-09-04 15:03:26,634 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-09-04 15:03:26,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:03:26,659 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:03:26,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:03:26,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:03:26,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:03:26,714 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:03:26,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:03:26,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:03:26,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:03:26,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:03:26,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:03:26,739 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-09-04 15:03:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:03:26,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:26,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:26,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1442746419, now seen corresponding path program 1 times [2020-09-04 15:03:26,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:26,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417083738] [2020-09-04 15:03:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:26,881 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,581 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:03:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:27,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417083738] [2020-09-04 15:03:27,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:27,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:03:27,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887590579] [2020-09-04 15:03:27,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:03:27,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:27,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:03:27,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:27,780 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 3 states. [2020-09-04 15:03:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:29,240 INFO L93 Difference]: Finished difference Result 540 states and 643 transitions. [2020-09-04 15:03:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:03:29,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:03:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:29,264 INFO L225 Difference]: With dead ends: 540 [2020-09-04 15:03:29,264 INFO L226 Difference]: Without dead ends: 329 [2020-09-04 15:03:29,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:03:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-09-04 15:03:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 285. [2020-09-04 15:03:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-09-04 15:03:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 312 transitions. [2020-09-04 15:03:29,445 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 312 transitions. Word has length 142 [2020-09-04 15:03:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:29,446 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 312 transitions. [2020-09-04 15:03:29,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:03:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 312 transitions. [2020-09-04 15:03:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:03:29,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:29,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:29,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:03:29,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:29,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:29,453 INFO L82 PathProgramCache]: Analyzing trace with hash -221358713, now seen corresponding path program 1 times [2020-09-04 15:03:29,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:29,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995451269] [2020-09-04 15:03:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:29,457 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,842 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:03:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:29,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995451269] [2020-09-04 15:03:29,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:29,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:03:29,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300859690] [2020-09-04 15:03:29,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:03:29,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:29,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:03:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:03:29,922 INFO L87 Difference]: Start difference. First operand 285 states and 312 transitions. Second operand 4 states. [2020-09-04 15:03:30,601 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:31,880 INFO L93 Difference]: Finished difference Result 453 states and 514 transitions. [2020-09-04 15:03:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:03:31,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:03:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:31,887 INFO L225 Difference]: With dead ends: 453 [2020-09-04 15:03:31,893 INFO L226 Difference]: Without dead ends: 312 [2020-09-04 15:03:31,895 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 [2020-09-04 15:03:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-04 15:03:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2020-09-04 15:03:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 15:03:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 299 transitions. [2020-09-04 15:03:32,015 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 299 transitions. Word has length 143 [2020-09-04 15:03:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:32,018 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 299 transitions. [2020-09-04 15:03:32,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:03:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 299 transitions. [2020-09-04 15:03:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:03:32,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:32,023 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] [2020-09-04 15:03:32,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:03:32,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash 983862452, now seen corresponding path program 1 times [2020-09-04 15:03:32,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:32,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212741247] [2020-09-04 15:03:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:32,027 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,478 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:03:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:32,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212741247] [2020-09-04 15:03:32,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:32,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:32,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189665861] [2020-09-04 15:03:32,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:32,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:32,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:32,676 INFO L87 Difference]: Start difference. First operand 275 states and 299 transitions. Second operand 10 states. [2020-09-04 15:03:33,380 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:33,901 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:34,152 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:34,438 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:34,767 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:35,061 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:37,011 INFO L93 Difference]: Finished difference Result 499 states and 576 transitions. [2020-09-04 15:03:37,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:03:37,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:03:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:37,018 INFO L225 Difference]: With dead ends: 499 [2020-09-04 15:03:37,018 INFO L226 Difference]: Without dead ends: 334 [2020-09-04 15:03:37,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:03:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-09-04 15:03:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 275. [2020-09-04 15:03:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 15:03:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 298 transitions. [2020-09-04 15:03:37,103 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 298 transitions. Word has length 156 [2020-09-04 15:03:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:37,104 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 298 transitions. [2020-09-04 15:03:37,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 298 transitions. [2020-09-04 15:03:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-04 15:03:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:37,107 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] [2020-09-04 15:03:37,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:03:37,107 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash -311994909, now seen corresponding path program 1 times [2020-09-04 15:03:37,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:37,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784614800] [2020-09-04 15:03:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:37,110 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,473 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 15:03:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 15:03:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:37,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784614800] [2020-09-04 15:03:37,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:37,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:03:37,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546072419] [2020-09-04 15:03:37,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:03:37,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:37,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:03:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:03:37,642 INFO L87 Difference]: Start difference. First operand 275 states and 298 transitions. Second operand 7 states. [2020-09-04 15:03:38,172 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:39,761 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:40,746 INFO L93 Difference]: Finished difference Result 685 states and 813 transitions. [2020-09-04 15:03:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:03:40,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-04 15:03:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:40,755 INFO L225 Difference]: With dead ends: 685 [2020-09-04 15:03:40,756 INFO L226 Difference]: Without dead ends: 520 [2020-09-04 15:03:40,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:03:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-04 15:03:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 393. [2020-09-04 15:03:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-09-04 15:03:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 423 transitions. [2020-09-04 15:03:40,927 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 423 transitions. Word has length 174 [2020-09-04 15:03:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:40,927 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 423 transitions. [2020-09-04 15:03:40,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:03:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 423 transitions. [2020-09-04 15:03:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 15:03:40,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:40,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:40,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:03:40,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:40,931 INFO L82 PathProgramCache]: Analyzing trace with hash 236159680, now seen corresponding path program 1 times [2020-09-04 15:03:40,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:40,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043540238] [2020-09-04 15:03:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:40,949 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,374 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:03:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:03:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:03:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 15:03:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:41,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043540238] [2020-09-04 15:03:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:03:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273094389] [2020-09-04 15:03:41,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:03:41,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:03:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:03:41,576 INFO L87 Difference]: Start difference. First operand 393 states and 423 transitions. Second operand 10 states. [2020-09-04 15:03:42,137 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:43,900 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:44,242 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:44,562 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:44,878 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:45,175 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:45,465 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:45,754 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:46,221 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:48,278 INFO L93 Difference]: Finished difference Result 1148 states and 1376 transitions. [2020-09-04 15:03:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:03:48,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2020-09-04 15:03:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:48,286 INFO L225 Difference]: With dead ends: 1148 [2020-09-04 15:03:48,286 INFO L226 Difference]: Without dead ends: 865 [2020-09-04 15:03:48,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:03:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-09-04 15:03:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 639. [2020-09-04 15:03:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-09-04 15:03:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 694 transitions. [2020-09-04 15:03:48,467 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 694 transitions. Word has length 198 [2020-09-04 15:03:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:48,467 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 694 transitions. [2020-09-04 15:03:48,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 694 transitions. [2020-09-04 15:03:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-04 15:03:48,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:48,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:48,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:03:48,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:48,472 INFO L82 PathProgramCache]: Analyzing trace with hash -704447827, now seen corresponding path program 1 times [2020-09-04 15:03:48,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:48,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011162852] [2020-09-04 15:03:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:48,475 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,852 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:03:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-04 15:03:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:49,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011162852] [2020-09-04 15:03:49,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:49,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:49,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514416852] [2020-09-04 15:03:49,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:49,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:49,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:49,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:49,198 INFO L87 Difference]: Start difference. First operand 639 states and 694 transitions. Second operand 11 states. [2020-09-04 15:03:49,931 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:51,729 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:52,041 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:52,272 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:52,558 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:52,840 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:53,194 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:53,507 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:53,853 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:55,460 INFO L93 Difference]: Finished difference Result 1000 states and 1228 transitions. [2020-09-04 15:03:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 15:03:55,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2020-09-04 15:03:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:55,468 INFO L225 Difference]: With dead ends: 1000 [2020-09-04 15:03:55,468 INFO L226 Difference]: Without dead ends: 997 [2020-09-04 15:03:55,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-04 15:03:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-09-04 15:03:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 639. [2020-09-04 15:03:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-09-04 15:03:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 693 transitions. [2020-09-04 15:03:55,659 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 693 transitions. Word has length 203 [2020-09-04 15:03:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:55,660 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 693 transitions. [2020-09-04 15:03:55,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 693 transitions. [2020-09-04 15:03:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:03:55,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:55,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:55,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:03:55,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1818229592, now seen corresponding path program 1 times [2020-09-04 15:03:55,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:55,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738364980] [2020-09-04 15:03:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:55,666 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:55,981 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:03:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:03:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:56,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738364980] [2020-09-04 15:03:56,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:56,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:56,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741824088] [2020-09-04 15:03:56,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:56,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:56,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:56,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:56,234 INFO L87 Difference]: Start difference. First operand 639 states and 693 transitions. Second operand 11 states. [2020-09-04 15:03:57,703 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:58,021 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:58,349 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:58,688 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:59,002 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:59,298 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:01,298 INFO L93 Difference]: Finished difference Result 1536 states and 1843 transitions. [2020-09-04 15:04:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:04:01,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-09-04 15:04:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:01,305 INFO L225 Difference]: With dead ends: 1536 [2020-09-04 15:04:01,305 INFO L226 Difference]: Without dead ends: 1007 [2020-09-04 15:04:01,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:04:01,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-09-04 15:04:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 655. [2020-09-04 15:04:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-04 15:04:01,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 709 transitions. [2020-09-04 15:04:01,476 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 709 transitions. Word has length 204 [2020-09-04 15:04:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:01,476 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 709 transitions. [2020-09-04 15:04:01,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:04:01,476 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 709 transitions. [2020-09-04 15:04:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:01,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:01,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:01,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:04:01,479 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1404598200, now seen corresponding path program 1 times [2020-09-04 15:04:01,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:01,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222409396] [2020-09-04 15:04:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:01,482 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,825 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:04:01,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:04:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:04:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:04:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:04:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:04:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:04:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:04:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:04:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:04:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:02,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:04:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:04:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:02,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:04:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:04:02,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222409396] [2020-09-04 15:04:02,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:04:02,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:04:02,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976530443] [2020-09-04 15:04:02,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:04:02,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:04:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:04:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:04:02,126 INFO L87 Difference]: Start difference. First operand 655 states and 709 transitions. Second operand 14 states. [2020-09-04 15:04:02,779 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:04:03,091 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:04:03,396 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:03,699 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:03,993 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:04,997 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:05,299 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:05,634 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:05,955 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:04:06,247 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:04:08,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:08,382 INFO L93 Difference]: Finished difference Result 1574 states and 1908 transitions. [2020-09-04 15:04:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:04:08,383 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-09-04 15:04:08,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:08,391 INFO L225 Difference]: With dead ends: 1574 [2020-09-04 15:04:08,392 INFO L226 Difference]: Without dead ends: 1029 [2020-09-04 15:04:08,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:04:08,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-09-04 15:04:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 667. [2020-09-04 15:04:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-09-04 15:04:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 721 transitions. [2020-09-04 15:04:08,643 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 721 transitions. Word has length 204 [2020-09-04 15:04:08,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:08,644 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 721 transitions. [2020-09-04 15:04:08,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:04:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 721 transitions. [2020-09-04 15:04:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 15:04:08,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:08,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:08,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:04:08,650 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1474116309, now seen corresponding path program 1 times [2020-09-04 15:04:08,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:08,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133984633] [2020-09-04 15:04:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:08,654 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,042 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:04:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:04:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:04:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:04:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:04:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:04:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:04:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:04:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:04:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:04:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:04:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:04:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:04:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 15:04:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:04:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:04:09,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133984633] [2020-09-04 15:04:09,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:04:09,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:04:09,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967807572] [2020-09-04 15:04:09,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:04:09,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:04:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:04:09,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:04:09,290 INFO L87 Difference]: Start difference. First operand 667 states and 721 transitions. Second operand 8 states. [2020-09-04 15:04:09,790 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:10,440 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:04:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:04:14,399 INFO L93 Difference]: Finished difference Result 2263 states and 2829 transitions. [2020-09-04 15:04:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 15:04:14,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-09-04 15:04:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:04:14,410 INFO L225 Difference]: With dead ends: 2263 [2020-09-04 15:04:14,411 INFO L226 Difference]: Without dead ends: 1706 [2020-09-04 15:04:14,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:04:14,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-09-04 15:04:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1129. [2020-09-04 15:04:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-09-04 15:04:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1261 transitions. [2020-09-04 15:04:14,836 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1261 transitions. Word has length 204 [2020-09-04 15:04:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:04:14,836 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1261 transitions. [2020-09-04 15:04:14,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:04:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1261 transitions. [2020-09-04 15:04:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 15:04:14,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:04:14,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:04:14,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:04:14,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:04:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:04:14,840 INFO L82 PathProgramCache]: Analyzing trace with hash -534461845, now seen corresponding path program 1 times [2020-09-04 15:04:14,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:04:14,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601341779] [2020-09-04 15:04:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:04:14,843 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:04:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:14,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:04:14,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:04:15,240 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:04:15,240 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:04:15,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:04:15,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:04:15 BoogieIcfgContainer [2020-09-04 15:04:15,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:04:15,284 INFO L168 Benchmark]: Toolchain (without parser) took 50748.53 ms. Allocated memory was 140.0 MB in the beginning and 784.3 MB in the end (delta: 644.3 MB). Free memory was 102.7 MB in the beginning and 460.7 MB in the end (delta: -358.0 MB). Peak memory consumption was 286.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:15,292 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:04:15,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.02 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 176.3 MB in the end (delta: -73.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:15,293 INFO L168 Benchmark]: Boogie Preprocessor took 94.76 ms. Allocated memory is still 207.1 MB. Free memory was 176.3 MB in the beginning and 172.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:15,295 INFO L168 Benchmark]: RCFGBuilder took 1262.53 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 172.3 MB in the beginning and 172.9 MB in the end (delta: -639.7 kB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:15,296 INFO L168 Benchmark]: TraceAbstraction took 48655.86 ms. Allocated memory was 235.9 MB in the beginning and 784.3 MB in the end (delta: 548.4 MB). Free memory was 172.9 MB in the beginning and 460.7 MB in the end (delta: -287.8 MB). Peak memory consumption was 260.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:04:15,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.02 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 102.5 MB in the beginning and 176.3 MB in the end (delta: -73.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.76 ms. Allocated memory is still 207.1 MB. Free memory was 176.3 MB in the beginning and 172.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1262.53 ms. Allocated memory was 207.1 MB in the beginning and 235.9 MB in the end (delta: 28.8 MB). Free memory was 172.3 MB in the beginning and 172.9 MB in the end (delta: -639.7 kB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48655.86 ms. Allocated memory was 235.9 MB in the beginning and 784.3 MB in the end (delta: 548.4 MB). Free memory was 172.9 MB in the beginning and 460.7 MB in the end (delta: -287.8 MB). Peak memory consumption was 260.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___2) [L187] CALL startSystem() [L456] systemActive = 1 [L187] RET startSystem() [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 653 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2437 SDtfs, 6421 SDslu, 4486 SDs, 0 SdLazy, 9871 SolverSat, 2105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 274 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1129occurred 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: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 2142 StatesRemovedByMinimization, 9 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...