/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_spec3_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:25:13,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:25:13,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:25:13,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:25:13,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:25:13,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:25:13,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:25:13,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:25:13,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:25:13,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:25:13,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:25:13,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:25:13,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:25:13,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:25:13,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:25:13,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:25:13,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:25:13,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:25:13,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:25:13,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:25:13,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:25:13,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:25:13,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:25:13,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:25:13,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:25:13,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:25:13,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:25:13,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:25:13,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:25:13,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:25:13,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:25:13,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:25:13,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:25:13,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:25:13,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:25:13,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:25:13,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:25:13,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:25:13,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:25:13,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:25:13,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:25:13,130 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 15:25:13,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:25:13,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:25:13,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:25:13,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:25:13,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:25:13,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:25:13,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:25:13,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:25:13,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:25:13,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:25:13,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:25:13,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:25:13,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:25:13,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:25:13,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:25:13,146 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:25:13,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:25:13,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:25:13,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:25:13,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:25:13,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:25:13,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:25:13,148 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:25:13,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:25:13,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:25:13,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:25:13,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:25:13,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:25:13,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-04 15:25:13,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c998a71/47dafca41f9e412fba78d6d7cc3f4b89/FLAG479c11ba4 [2020-09-04 15:25:14,383 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:25:14,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-09-04 15:25:14,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c998a71/47dafca41f9e412fba78d6d7cc3f4b89/FLAG479c11ba4 [2020-09-04 15:25:14,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28c998a71/47dafca41f9e412fba78d6d7cc3f4b89 [2020-09-04 15:25:14,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:25:14,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:25:14,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:25:14,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:25:14,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:25:14,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:25:14" (1/1) ... [2020-09-04 15:25:14,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a098cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:14, skipping insertion in model container [2020-09-04 15:25:14,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:25:14" (1/1) ... [2020-09-04 15:25:14,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:25:14,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:25:15,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:25:15,237 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:25:15,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:25:15,369 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:25:15,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15 WrapperNode [2020-09-04 15:25:15,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:25:15,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:25:15,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:25:15,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:25:15,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (1/1) ... [2020-09-04 15:25:15,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:25:15,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:25:15,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:25:15,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:25:15,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (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 15:25:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:25:15,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:25:15,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:25:15,587 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:25:15,587 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:25:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:25:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:25:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:25:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:25:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:25:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:25:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:25:15,590 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:25:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:25:15,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:25:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:25:15,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:25:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:25:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:25:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:25:15,594 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:25:15,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:25:15,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:25:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:25:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:25:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:25:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:25:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:25:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:25:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:25:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:25:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:25:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:25:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:25:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:25:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:25:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:25:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:25:15,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:25:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:25:15,604 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:25:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:25:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:25:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:25:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:25:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:25:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:25:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:25:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:25:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:25:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:25:16,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:25:16,700 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:25:16,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:25:16 BoogieIcfgContainer [2020-09-04 15:25:16,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:25:16,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:25:16,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:25:16,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:25:16,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:25:14" (1/3) ... [2020-09-04 15:25:16,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16674b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:25:16, skipping insertion in model container [2020-09-04 15:25:16,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:15" (2/3) ... [2020-09-04 15:25:16,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16674b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:25:16, skipping insertion in model container [2020-09-04 15:25:16,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:25:16" (3/3) ... [2020-09-04 15:25:16,718 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-09-04 15:25:16,730 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:25:16,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:25:16,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:25:16,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:25:16,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:25:16,794 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:25:16,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:25:16,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:25:16,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:25:16,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:25:16,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:25:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-09-04 15:25:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:25:16,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:16,845 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] [2020-09-04 15:25:16,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1368877385, now seen corresponding path program 1 times [2020-09-04 15:25:16,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:16,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825777435] [2020-09-04 15:25:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:16,943 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,735 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:17,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:25:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:25:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:25:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:17,944 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 15:25:17,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825777435] [2020-09-04 15:25:17,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:17,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:25:17,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584805205] [2020-09-04 15:25:17,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:25:17,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:17,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:25:17,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:25:17,989 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-09-04 15:25:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:19,443 INFO L93 Difference]: Finished difference Result 525 states and 623 transitions. [2020-09-04 15:25:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:25:19,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:25:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:19,468 INFO L225 Difference]: With dead ends: 525 [2020-09-04 15:25:19,468 INFO L226 Difference]: Without dead ends: 321 [2020-09-04 15:25:19,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:25:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-04 15:25:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 278. [2020-09-04 15:25:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-04 15:25:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 303 transitions. [2020-09-04 15:25:19,706 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 303 transitions. Word has length 153 [2020-09-04 15:25:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:19,707 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 303 transitions. [2020-09-04 15:25:19,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:25:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 303 transitions. [2020-09-04 15:25:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:25:19,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:19,712 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] [2020-09-04 15:25:19,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:25:19,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:19,714 INFO L82 PathProgramCache]: Analyzing trace with hash -519128140, now seen corresponding path program 1 times [2020-09-04 15:25:19,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:19,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851301818] [2020-09-04 15:25:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:19,717 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,234 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:20,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:25:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:25:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:25:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:20,358 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 15:25:20,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851301818] [2020-09-04 15:25:20,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:20,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:25:20,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141694288] [2020-09-04 15:25:20,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:25:20,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:25:20,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:25:20,364 INFO L87 Difference]: Start difference. First operand 278 states and 303 transitions. Second operand 4 states. [2020-09-04 15:25:21,070 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:25:22,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:22,215 INFO L93 Difference]: Finished difference Result 436 states and 490 transitions. [2020-09-04 15:25:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:25:22,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:25:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:22,226 INFO L225 Difference]: With dead ends: 436 [2020-09-04 15:25:22,226 INFO L226 Difference]: Without dead ends: 304 [2020-09-04 15:25:22,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:25:22,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-04 15:25:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 268. [2020-09-04 15:25:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-04 15:25:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2020-09-04 15:25:22,309 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 154 [2020-09-04 15:25:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:22,310 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2020-09-04 15:25:22,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:25:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2020-09-04 15:25:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:25:22,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:22,313 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] [2020-09-04 15:25:22,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:25:22,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2138906807, now seen corresponding path program 1 times [2020-09-04 15:25:22,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:22,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967150828] [2020-09-04 15:25:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:22,317 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,703 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:25:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:25:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:25:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:22,892 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 15:25:22,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967150828] [2020-09-04 15:25:22,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:22,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:25:22,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120350741] [2020-09-04 15:25:22,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:25:22,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:22,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:25:22,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:25:22,896 INFO L87 Difference]: Start difference. First operand 268 states and 290 transitions. Second operand 9 states. [2020-09-04 15:25:23,475 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:25:23,788 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:25:24,034 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:25:24,370 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:24,655 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:25:24,944 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:25,935 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:25:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:28,555 INFO L93 Difference]: Finished difference Result 726 states and 833 transitions. [2020-09-04 15:25:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:25:28,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:25:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:28,561 INFO L225 Difference]: With dead ends: 726 [2020-09-04 15:25:28,561 INFO L226 Difference]: Without dead ends: 568 [2020-09-04 15:25:28,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:25:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-09-04 15:25:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 501. [2020-09-04 15:25:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-09-04 15:25:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 560 transitions. [2020-09-04 15:25:28,790 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 560 transitions. Word has length 163 [2020-09-04 15:25:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:28,792 INFO L479 AbstractCegarLoop]: Abstraction has 501 states and 560 transitions. [2020-09-04 15:25:28,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:25:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 560 transitions. [2020-09-04 15:25:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:25:28,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:28,800 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] [2020-09-04 15:25:28,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:25:28,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:28,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2098385337, now seen corresponding path program 1 times [2020-09-04 15:25:28,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:28,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030223782] [2020-09-04 15:25:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:28,809 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,187 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:29,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:25:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:25:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:25:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:25:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:29,343 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 15:25:29,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030223782] [2020-09-04 15:25:29,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:29,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:25:29,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223348588] [2020-09-04 15:25:29,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:25:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:25:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:25:29,345 INFO L87 Difference]: Start difference. First operand 501 states and 560 transitions. Second operand 9 states. [2020-09-04 15:25:29,843 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:25:31,957 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:32,318 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:25:32,692 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:33,055 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:25:33,373 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:25:33,659 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:33,960 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:25:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:34,907 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2020-09-04 15:25:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:25:34,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:25:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:34,915 INFO L225 Difference]: With dead ends: 1362 [2020-09-04 15:25:34,915 INFO L226 Difference]: Without dead ends: 971 [2020-09-04 15:25:34,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:25:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-04 15:25:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 871. [2020-09-04 15:25:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2020-09-04 15:25:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 997 transitions. [2020-09-04 15:25:35,193 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 997 transitions. Word has length 172 [2020-09-04 15:25:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:35,193 INFO L479 AbstractCegarLoop]: Abstraction has 871 states and 997 transitions. [2020-09-04 15:25:35,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:25:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 997 transitions. [2020-09-04 15:25:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:25:35,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:35,198 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] [2020-09-04 15:25:35,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:25:35,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 930782325, now seen corresponding path program 1 times [2020-09-04 15:25:35,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:35,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402591676] [2020-09-04 15:25:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:35,203 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,626 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:25:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:25:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:25:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:25:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-04 15:25:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:35,761 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 15:25:35,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402591676] [2020-09-04 15:25:35,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:35,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:25:35,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107076301] [2020-09-04 15:25:35,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:25:35,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:35,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:25:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:25:35,764 INFO L87 Difference]: Start difference. First operand 871 states and 997 transitions. Second operand 6 states. [2020-09-04 15:25:36,261 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:25:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:38,711 INFO L93 Difference]: Finished difference Result 1956 states and 2350 transitions. [2020-09-04 15:25:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:25:38,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-04 15:25:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:38,722 INFO L225 Difference]: With dead ends: 1956 [2020-09-04 15:25:38,723 INFO L226 Difference]: Without dead ends: 1195 [2020-09-04 15:25:38,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:25:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-09-04 15:25:39,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1098. [2020-09-04 15:25:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-09-04 15:25:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1253 transitions. [2020-09-04 15:25:39,148 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1253 transitions. Word has length 177 [2020-09-04 15:25:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:39,149 INFO L479 AbstractCegarLoop]: Abstraction has 1098 states and 1253 transitions. [2020-09-04 15:25:39,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:25:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1253 transitions. [2020-09-04 15:25:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:25:39,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:39,153 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] [2020-09-04 15:25:39,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:25:39,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:39,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:39,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1702574382, now seen corresponding path program 1 times [2020-09-04 15:25:39,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:39,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304208226] [2020-09-04 15:25:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:39,157 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:25:39,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:25:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:25:39,301 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:25:39,464 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:25:39,464 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:25:39,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:25:39,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:25:39 BoogieIcfgContainer [2020-09-04 15:25:39,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:25:39,494 INFO L168 Benchmark]: Toolchain (without parser) took 24856.09 ms. Allocated memory was 139.5 MB in the beginning and 712.0 MB in the end (delta: 572.5 MB). Free memory was 102.8 MB in the beginning and 506.0 MB in the end (delta: -403.1 MB). Peak memory consumption was 169.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,495 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.53 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 173.0 MB in the end (delta: -70.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,497 INFO L168 Benchmark]: Boogie Preprocessor took 109.34 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 168.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,498 INFO L168 Benchmark]: RCFGBuilder took 1227.47 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 175.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,499 INFO L168 Benchmark]: TraceAbstraction took 22783.25 ms. Allocated memory was 237.0 MB in the beginning and 712.0 MB in the end (delta: 475.0 MB). Free memory was 175.5 MB in the beginning and 506.0 MB in the end (delta: -330.5 MB). Peak memory consumption was 144.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:25:39,503 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.53 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 173.0 MB in the end (delta: -70.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.34 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 168.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.47 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 175.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22783.25 ms. Allocated memory was 237.0 MB in the beginning and 712.0 MB in the end (delta: 475.0 MB). Free memory was 175.5 MB in the beginning and 506.0 MB in the end (delta: -330.5 MB). Peak memory consumption was 144.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 649 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1315 SDtfs, 2059 SDslu, 1438 SDs, 0 SdLazy, 3903 SolverSat, 662 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1098occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 343 StatesRemovedByMinimization, 5 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...