/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:59:48,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:59:48,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:59:49,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:59:49,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:59:49,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:59:49,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:59:49,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:59:49,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:59:49,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:59:49,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:59:49,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:59:49,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:59:49,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:59:49,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:59:49,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:59:49,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:59:49,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:59:49,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:59:49,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:59:49,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:59:49,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:59:49,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:59:49,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:59:49,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:59:49,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:59:49,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:59:49,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:59:49,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:59:49,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:59:49,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:59:49,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:59:49,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:59:49,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:59:49,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:59:49,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:59:49,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:59:49,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:59:49,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:59:49,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:59:49,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:59:49,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:59:49,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:59:49,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:59:49,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:59:49,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:59:49,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:59:49,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:59:49,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:59:49,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:59:49,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:59:49,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:59:49,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:59:49,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:59:49,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:59:49,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:59:49,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:59:49,077 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:59:49,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:59:49,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:59:49,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:59:49,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:59:49,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:59:49,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:59:49,078 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:59:49,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:59:49,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:59:49,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:59:49,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:59:49,445 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:59:49,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2021-02-21 18:59:49,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a95fa67/5cbddd5847ae44d9a646de14a4770533/FLAG26fd8de65 [2021-02-21 18:59:50,293 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:59:50,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2021-02-21 18:59:50,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a95fa67/5cbddd5847ae44d9a646de14a4770533/FLAG26fd8de65 [2021-02-21 18:59:50,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a95fa67/5cbddd5847ae44d9a646de14a4770533 [2021-02-21 18:59:50,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:59:50,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:59:50,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:50,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:59:50,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:59:50,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:50" (1/1) ... [2021-02-21 18:59:50,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473d4c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:50, skipping insertion in model container [2021-02-21 18:59:50,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:59:50" (1/1) ... [2021-02-21 18:59:50,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:59:50,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:59:50,916 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c[16932,16945] [2021-02-21 18:59:50,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:50,941 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:59:51,010 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c[16932,16945] [2021-02-21 18:59:51,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:59:51,061 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:59:51,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51 WrapperNode [2021-02-21 18:59:51,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:59:51,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:59:51,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:59:51,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:59:51,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... [2021-02-21 18:59:51,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:59:51,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:59:51,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:59:51,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:59:51,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:59:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:59:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:59:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:59:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:59:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:59:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 18:59:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:59:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:59:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:59:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:59:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:59:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:59:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:59:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:59:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:59:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:59:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:59:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 18:59:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 18:59:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:59:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:59:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:59:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:59:52,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:59:52,559 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:59:52,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:52 BoogieIcfgContainer [2021-02-21 18:59:52,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:59:52,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:59:52,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:59:52,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:59:52,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:59:50" (1/3) ... [2021-02-21 18:59:52,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cce688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:52, skipping insertion in model container [2021-02-21 18:59:52,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:59:51" (2/3) ... [2021-02-21 18:59:52,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cce688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:59:52, skipping insertion in model container [2021-02-21 18:59:52,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:59:52" (3/3) ... [2021-02-21 18:59:52,573 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-02-21 18:59:52,579 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:59:52,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:59:52,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:59:52,627 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:59:52,627 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:59:52,628 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:59:52,628 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:59:52,628 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:59:52,628 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:59:52,628 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:59:52,629 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:59:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states. [2021-02-21 18:59:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:59:52,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:52,677 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] [2021-02-21 18:59:52,677 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash 991455276, now seen corresponding path program 1 times [2021-02-21 18:59:52,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:52,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920859429] [2021-02-21 18:59:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:52,774 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,438 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:53,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:59:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:59:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:59:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:53,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:53,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:59:53,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920859429] [2021-02-21 18:59:53,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:53,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:59:53,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969175710] [2021-02-21 18:59:53,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:59:53,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:59:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:59:53,636 INFO L87 Difference]: Start difference. First operand 345 states. Second operand 3 states. [2021-02-21 18:59:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:55,475 INFO L93 Difference]: Finished difference Result 540 states and 639 transitions. [2021-02-21 18:59:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:59:55,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:59:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:55,495 INFO L225 Difference]: With dead ends: 540 [2021-02-21 18:59:55,495 INFO L226 Difference]: Without dead ends: 331 [2021-02-21 18:59:55,501 INFO L677 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 [2021-02-21 18:59:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-02-21 18:59:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 287. [2021-02-21 18:59:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-21 18:59:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 312 transitions. [2021-02-21 18:59:55,667 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 312 transitions. Word has length 158 [2021-02-21 18:59:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:55,668 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 312 transitions. [2021-02-21 18:59:55,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:59:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 312 transitions. [2021-02-21 18:59:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:59:55,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:55,674 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] [2021-02-21 18:59:55,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:59:55,675 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:55,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1176692018, now seen corresponding path program 1 times [2021-02-21 18:59:55,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:55,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053206451] [2021-02-21 18:59:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:55,681 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:55,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:55,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:55,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:55,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:55,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:55,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,185 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:59:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:59:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:59:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:56,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:56,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:59:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053206451] [2021-02-21 18:59:56,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:56,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:59:56,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734907843] [2021-02-21 18:59:56,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:59:56,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:59:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:59:56,340 INFO L87 Difference]: Start difference. First operand 287 states and 312 transitions. Second operand 4 states. [2021-02-21 18:59:57,063 WARN L202 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:59:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:59:58,323 INFO L93 Difference]: Finished difference Result 446 states and 501 transitions. [2021-02-21 18:59:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:59:58,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:59:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:59:58,329 INFO L225 Difference]: With dead ends: 446 [2021-02-21 18:59:58,330 INFO L226 Difference]: Without dead ends: 314 [2021-02-21 18:59:58,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:59:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-21 18:59:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 277. [2021-02-21 18:59:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-02-21 18:59:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 299 transitions. [2021-02-21 18:59:58,453 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 299 transitions. Word has length 159 [2021-02-21 18:59:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:59:58,454 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 299 transitions. [2021-02-21 18:59:58,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:59:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 299 transitions. [2021-02-21 18:59:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:59:58,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:59:58,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:59:58,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:59:58,458 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:59:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:59:58,459 INFO L82 PathProgramCache]: Analyzing trace with hash 274929298, now seen corresponding path program 1 times [2021-02-21 18:59:58,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:59:58,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969828927] [2021-02-21 18:59:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:59:58,463 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:59:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:58,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:58,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:59:58,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,904 WARN L202 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:59:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:59:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:59:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:59:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:59:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:58,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:58,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:59:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:59:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:58,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:58,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:59:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:59,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:59,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:59:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:59:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:59,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:59,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:59:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:59,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:59,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:59:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:59:59,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:59:59,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:59:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:59:59,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969828927] [2021-02-21 18:59:59,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:59:59,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:59:59,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764914702] [2021-02-21 18:59:59,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:59:59,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:59:59,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:59:59,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:59:59,070 INFO L87 Difference]: Start difference. First operand 277 states and 299 transitions. Second operand 10 states. [2021-02-21 18:59:59,822 WARN L202 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:00,271 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:00:00,616 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:00:01,001 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:01,318 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:01,764 WARN L202 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:02,784 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:05,835 INFO L93 Difference]: Finished difference Result 767 states and 889 transitions. [2021-02-21 19:00:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 19:00:05,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 19:00:05,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:05,844 INFO L225 Difference]: With dead ends: 767 [2021-02-21 19:00:05,844 INFO L226 Difference]: Without dead ends: 605 [2021-02-21 19:00:05,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 19:00:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-02-21 19:00:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 510. [2021-02-21 19:00:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2021-02-21 19:00:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 569 transitions. [2021-02-21 19:00:06,119 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 569 transitions. Word has length 172 [2021-02-21 19:00:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:06,119 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 569 transitions. [2021-02-21 19:00:06,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:00:06,120 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 569 transitions. [2021-02-21 19:00:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:00:06,123 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:06,124 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] [2021-02-21 19:00:06,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:00:06,124 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1452920507, now seen corresponding path program 1 times [2021-02-21 19:00:06,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:06,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449962282] [2021-02-21 19:00:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:06,128 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,528 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:00:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:00:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:00:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:06,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:06,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:06,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449962282] [2021-02-21 19:00:06,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:06,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:06,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318312412] [2021-02-21 19:00:06,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:06,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:06,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:06,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:06,734 INFO L87 Difference]: Start difference. First operand 510 states and 569 transitions. Second operand 9 states. [2021-02-21 19:00:07,291 WARN L202 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:09,426 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:09,802 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:10,224 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:10,729 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:11,092 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:11,466 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:11,869 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:12,910 INFO L93 Difference]: Finished difference Result 1382 states and 1656 transitions. [2021-02-21 19:00:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:00:12,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:00:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:12,919 INFO L225 Difference]: With dead ends: 1382 [2021-02-21 19:00:12,919 INFO L226 Difference]: Without dead ends: 987 [2021-02-21 19:00:12,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:00:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-02-21 19:00:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 884. [2021-02-21 19:00:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2021-02-21 19:00:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1010 transitions. [2021-02-21 19:00:13,381 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1010 transitions. Word has length 177 [2021-02-21 19:00:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:13,381 INFO L480 AbstractCegarLoop]: Abstraction has 884 states and 1010 transitions. [2021-02-21 19:00:13,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1010 transitions. [2021-02-21 19:00:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:13,388 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:13,388 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] [2021-02-21 19:00:13,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:00:13,389 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1512846172, now seen corresponding path program 1 times [2021-02-21 19:00:13,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:13,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277096097] [2021-02-21 19:00:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:13,393 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,801 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:00:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:00:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:00:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:13,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:00:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:13,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:13,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:14,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277096097] [2021-02-21 19:00:14,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:14,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:00:14,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510748285] [2021-02-21 19:00:14,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:00:14,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:14,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:00:14,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:00:14,022 INFO L87 Difference]: Start difference. First operand 884 states and 1010 transitions. Second operand 6 states. [2021-02-21 19:00:14,606 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:17,413 INFO L93 Difference]: Finished difference Result 1988 states and 2385 transitions. [2021-02-21 19:00:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:00:17,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:00:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:17,422 INFO L225 Difference]: With dead ends: 1988 [2021-02-21 19:00:17,422 INFO L226 Difference]: Without dead ends: 1219 [2021-02-21 19:00:17,425 INFO L677 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 [2021-02-21 19:00:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-02-21 19:00:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1119. [2021-02-21 19:00:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2021-02-21 19:00:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1274 transitions. [2021-02-21 19:00:17,916 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1274 transitions. Word has length 182 [2021-02-21 19:00:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:17,916 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 1274 transitions. [2021-02-21 19:00:17,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:00:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1274 transitions. [2021-02-21 19:00:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:00:17,920 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:17,920 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] [2021-02-21 19:00:17,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:00:17,921 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1558777507, now seen corresponding path program 1 times [2021-02-21 19:00:17,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:17,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101813108] [2021-02-21 19:00:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:17,924 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:17,997 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:00:18,069 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:00:18,249 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:00:18,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:00:18,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:00:18,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:00:18 BoogieIcfgContainer [2021-02-21 19:00:18,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:00:18,274 INFO L168 Benchmark]: Toolchain (without parser) took 27802.00 ms. Allocated memory was 162.5 MB in the beginning and 632.3 MB in the end (delta: 469.8 MB). Free memory was 138.0 MB in the beginning and 238.1 MB in the end (delta: -100.1 MB). Peak memory consumption was 371.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:18,274 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:00:18,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.08 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 115.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:18,275 INFO L168 Benchmark]: Boogie Preprocessor took 83.31 ms. Allocated memory is still 162.5 MB. Free memory was 115.3 MB in the beginning and 111.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:18,276 INFO L168 Benchmark]: RCFGBuilder took 1416.13 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 111.3 MB in the beginning and 157.0 MB in the end (delta: -45.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:18,276 INFO L168 Benchmark]: TraceAbstraction took 25707.60 ms. Allocated memory was 195.0 MB in the beginning and 632.3 MB in the end (delta: 437.3 MB). Free memory was 157.0 MB in the beginning and 238.1 MB in the end (delta: -81.1 MB). Peak memory consumption was 356.6 MB. Max. memory is 8.0 GB. [2021-02-21 19:00:18,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 573.08 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 115.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.31 ms. Allocated memory is still 162.5 MB. Free memory was 115.3 MB in the beginning and 111.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1416.13 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 111.3 MB in the beginning and 157.0 MB in the end (delta: -45.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25707.60 ms. Allocated memory was 195.0 MB in the beginning and 632.3 MB in the end (delta: 437.3 MB). Free memory was 157.0 MB in the beginning and 238.1 MB in the end (delta: -81.1 MB). Peak memory consumption was 356.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 855]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L561] int pumpRunning = 0; [L562] int systemActive = 1; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L976] FCALL select_helpers() [L977] FCALL select_features() [L978] CALL, EXPR valid_product() [L889] int retValue_acc ; [L892] retValue_acc = 1 [L893] return (retValue_acc); [L978] RET, EXPR valid_product() [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L982] FCALL setup() [L983] CALL runTest() [L965] CALL test() [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND TRUE \read(tmp) [L804] CALL waterRise() [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 [L804] RET waterRise() [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L761] COND FALSE !(\read(pumpRunning)) [L768] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L568] COND FALSE !(\read(pumpRunning)) [L575] COND FALSE !(\read(systemActive)) [L583] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L675] int retValue_acc ; [L678] retValue_acc = pumpRunning [L679] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L855] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 662 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1371 SDtfs, 2527 SDslu, 1672 SDs, 0 SdLazy, 3940 SolverSat, 863 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1119occurred 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: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 379 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...