/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:32:04,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:32:04,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:32:04,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:32:04,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:32:04,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:32:04,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:32:05,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:32:05,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:32:05,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:32:05,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:32:05,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:32:05,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:32:05,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:32:05,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:32:05,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:32:05,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:32:05,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:32:05,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:32:05,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:32:05,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:32:05,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:32:05,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:32:05,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:32:05,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 15:32:05,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 15:32:05,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 15:32:05,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 15:32:05,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 15:32:05,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 15:32:05,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 15:32:05,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 15:32:05,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 15:32:05,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 15:32:05,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 15:32:05,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 15:32:05,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 15:32:05,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 15:32:05,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:32:05,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:32:05,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:32:05,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:32:05,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:32:05,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:32:05,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:32:05,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:32:05,076 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:32:05,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:32:05,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:32:05,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:32:05,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:32:05,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:32:05,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:32:05,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:32:05,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:32:05,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:32:05,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:32:05,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:32:05,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:32:05,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:32:05,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:32:05,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:32:05,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:32:05,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:32:05,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:32:05,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:32:05,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:32:05,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:32:05,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:32:05,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:32:05,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:32:05,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:32:05,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:32:05,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:32:05,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:32:05,623 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:32:05,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2021-02-21 15:32:05,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2214f188b/651b1c37eba3445d81f4fba6dc7c9027/FLAG4408afae9 [2021-02-21 15:32:06,356 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:32:06,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2021-02-21 15:32:06,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2214f188b/651b1c37eba3445d81f4fba6dc7c9027/FLAG4408afae9 [2021-02-21 15:32:06,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2214f188b/651b1c37eba3445d81f4fba6dc7c9027 [2021-02-21 15:32:06,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:32:06,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:32:06,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:32:06,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:32:06,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:32:06,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:32:06" (1/1) ... [2021-02-21 15:32:06,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12688d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:06, skipping insertion in model container [2021-02-21 15:32:06,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:32:06" (1/1) ... [2021-02-21 15:32:06,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:32:06,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:32:06,895 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_product48.cil.c[1281,1294] [2021-02-21 15:32:07,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:32:07,147 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:32:07,174 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_product48.cil.c[1281,1294] [2021-02-21 15:32:07,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:32:07,309 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:32:07,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07 WrapperNode [2021-02-21 15:32:07,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:32:07,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:32:07,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:32:07,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:32:07,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (1/1) ... [2021-02-21 15:32:07,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:32:07,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:32:07,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:32:07,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:32:07,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (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 15:32:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:32:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:32:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 15:32:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:32:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 15:32:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 15:32:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 15:32:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 15:32:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 15:32:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 15:32:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 15:32:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 15:32:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 15:32:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 15:32:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 15:32:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 15:32:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 15:32:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 15:32:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 15:32:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 15:32:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 15:32:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 15:32:07,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 15:32:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 15:32:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 15:32:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 15:32:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 15:32:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 15:32:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 15:32:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 15:32:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 15:32:07,546 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 15:32:07,546 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 15:32:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 15:32:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 15:32:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:32:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 15:32:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 15:32:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 15:32:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 15:32:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 15:32:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:32:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 15:32:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 15:32:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 15:32:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 15:32:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:32:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:32:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:32:08,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:32:08,891 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 15:32:08,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:32:08 BoogieIcfgContainer [2021-02-21 15:32:08,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:32:08,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:32:08,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:32:08,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:32:08,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:32:06" (1/3) ... [2021-02-21 15:32:08,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180dcb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:32:08, skipping insertion in model container [2021-02-21 15:32:08,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:32:07" (2/3) ... [2021-02-21 15:32:08,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180dcb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:32:08, skipping insertion in model container [2021-02-21 15:32:08,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:32:08" (3/3) ... [2021-02-21 15:32:08,904 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2021-02-21 15:32:08,911 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:32:08,917 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:32:08,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:32:08,967 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:32:08,968 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:32:08,968 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:32:08,968 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:32:08,968 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:32:08,968 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:32:08,968 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:32:08,969 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:32:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-21 15:32:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 15:32:09,003 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:09,004 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] [2021-02-21 15:32:09,005 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:09,012 INFO L82 PathProgramCache]: Analyzing trace with hash -110733933, now seen corresponding path program 1 times [2021-02-21 15:32:09,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:09,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443263260] [2021-02-21 15:32:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,721 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:32:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:32:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:32:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:32:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:32:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:32:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 15:32:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-21 15:32:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 15:32:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:09,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:09,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:09,862 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 15:32:09,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443263260] [2021-02-21 15:32:09,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:32:09,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 15:32:09,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885438974] [2021-02-21 15:32:09,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 15:32:09,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:32:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 15:32:09,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 15:32:09,891 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2021-02-21 15:32:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:32:11,647 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2021-02-21 15:32:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:32:11,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-21 15:32:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:32:11,673 INFO L225 Difference]: With dead ends: 338 [2021-02-21 15:32:11,673 INFO L226 Difference]: Without dead ends: 183 [2021-02-21 15:32:11,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 15:32:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-02-21 15:32:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2021-02-21 15:32:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-21 15:32:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2021-02-21 15:32:11,839 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2021-02-21 15:32:11,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:32:11,840 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2021-02-21 15:32:11,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 15:32:11,840 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2021-02-21 15:32:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 15:32:11,845 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:11,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:32:11,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:32:11,845 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:11,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:11,846 INFO L82 PathProgramCache]: Analyzing trace with hash -680786158, now seen corresponding path program 1 times [2021-02-21 15:32:11,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:11,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290903547] [2021-02-21 15:32:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:11,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:11,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:11,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:11,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:11,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:11,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,287 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:32:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:32:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:32:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:32:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:32:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:32:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 15:32:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 15:32:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-21 15:32:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:12,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:12,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:12,384 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 15:32:12,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290903547] [2021-02-21 15:32:12,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:32:12,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:32:12,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390887368] [2021-02-21 15:32:12,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:32:12,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:32:12,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:32:12,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:32:12,390 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2021-02-21 15:32:13,001 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 15:32:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:32:14,202 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2021-02-21 15:32:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:32:14,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2021-02-21 15:32:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:32:14,206 INFO L225 Difference]: With dead ends: 261 [2021-02-21 15:32:14,206 INFO L226 Difference]: Without dead ends: 167 [2021-02-21 15:32:14,208 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 15:32:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-02-21 15:32:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2021-02-21 15:32:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-02-21 15:32:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2021-02-21 15:32:14,264 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2021-02-21 15:32:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:32:14,265 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2021-02-21 15:32:14,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:32:14,265 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2021-02-21 15:32:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 15:32:14,268 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:14,268 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] [2021-02-21 15:32:14,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:32:14,269 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:14,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2112999507, now seen corresponding path program 1 times [2021-02-21 15:32:14,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:14,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554557314] [2021-02-21 15:32:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:14,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:14,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:14,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:14,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:32:14,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:32:14,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 15:32:14,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,791 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:32:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:32:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 15:32:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:32:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:32:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:32:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,863 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 15:32:14,865 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 15:32:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:32:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-21 15:32:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-21 15:32:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 15:32:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:14,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:14,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:14,912 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 15:32:14,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554557314] [2021-02-21 15:32:14,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:32:14,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 15:32:14,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858549792] [2021-02-21 15:32:14,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 15:32:14,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:32:14,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 15:32:14,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 15:32:14,915 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2021-02-21 15:32:15,466 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:32:15,932 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:16,340 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:16,777 WARN L202 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:17,760 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 15:32:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:32:20,340 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2021-02-21 15:32:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 15:32:20,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-21 15:32:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:32:20,345 INFO L225 Difference]: With dead ends: 476 [2021-02-21 15:32:20,346 INFO L226 Difference]: Without dead ends: 363 [2021-02-21 15:32:20,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-21 15:32:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-02-21 15:32:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2021-02-21 15:32:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2021-02-21 15:32:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2021-02-21 15:32:20,454 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2021-02-21 15:32:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:32:20,454 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2021-02-21 15:32:20,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 15:32:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2021-02-21 15:32:20,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 15:32:20,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:20,458 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] [2021-02-21 15:32:20,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:32:20,459 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:20,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:20,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1057437816, now seen corresponding path program 1 times [2021-02-21 15:32:20,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:20,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787511248] [2021-02-21 15:32:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:20,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:20,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:20,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:20,995 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:32:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:32:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 15:32:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:32:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:32:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:32:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:32:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 15:32:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-21 15:32:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 15:32:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:21,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-21 15:32:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:21,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:21,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:21,188 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 15:32:21,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787511248] [2021-02-21 15:32:21,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:32:21,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 15:32:21,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36232440] [2021-02-21 15:32:21,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 15:32:21,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:32:21,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 15:32:21,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 15:32:21,191 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2021-02-21 15:32:21,759 WARN L202 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:32:23,486 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:24,052 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:24,475 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 15:32:24,909 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:32:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:32:26,183 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2021-02-21 15:32:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 15:32:26,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2021-02-21 15:32:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:32:26,191 INFO L225 Difference]: With dead ends: 913 [2021-02-21 15:32:26,191 INFO L226 Difference]: Without dead ends: 643 [2021-02-21 15:32:26,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-02-21 15:32:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-02-21 15:32:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2021-02-21 15:32:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2021-02-21 15:32:26,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2021-02-21 15:32:26,393 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2021-02-21 15:32:26,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:32:26,395 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2021-02-21 15:32:26,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 15:32:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2021-02-21 15:32:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 15:32:26,404 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:26,405 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] [2021-02-21 15:32:26,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:32:26,406 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash 55573390, now seen corresponding path program 1 times [2021-02-21 15:32:26,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:26,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476590497] [2021-02-21 15:32:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,881 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 15:32:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:32:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:32:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-02-21 15:32:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-21 15:32:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-21 15:32:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-21 15:32:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:32:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-21 15:32:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-21 15:32:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 15:32:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 15:32:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:32:26,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:32:26,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:32:26,982 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 15:32:26,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476590497] [2021-02-21 15:32:26,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:32:26,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:32:26,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994282153] [2021-02-21 15:32:26,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:32:26,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:32:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:32:26,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:32:26,984 INFO L87 Difference]: Start difference. First operand 569 states and 703 transitions. Second operand 6 states. [2021-02-21 15:32:27,435 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 15:32:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:32:29,524 INFO L93 Difference]: Finished difference Result 1385 states and 1798 transitions. [2021-02-21 15:32:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 15:32:29,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2021-02-21 15:32:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:32:29,532 INFO L225 Difference]: With dead ends: 1385 [2021-02-21 15:32:29,532 INFO L226 Difference]: Without dead ends: 840 [2021-02-21 15:32:29,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 15:32:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-02-21 15:32:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 767. [2021-02-21 15:32:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2021-02-21 15:32:29,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 930 transitions. [2021-02-21 15:32:29,743 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 930 transitions. Word has length 67 [2021-02-21 15:32:29,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:32:29,743 INFO L480 AbstractCegarLoop]: Abstraction has 767 states and 930 transitions. [2021-02-21 15:32:29,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:32:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 930 transitions. [2021-02-21 15:32:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 15:32:29,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:32:29,745 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] [2021-02-21 15:32:29,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 15:32:29,746 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:32:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:32:29,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1692195346, now seen corresponding path program 1 times [2021-02-21 15:32:29,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:32:29,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959272527] [2021-02-21 15:32:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:32:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:32:29,824 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:32:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:32:29,894 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:32:29,974 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:32:29,974 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:32:29,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 15:32:30,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:32:30 BoogieIcfgContainer [2021-02-21 15:32:30,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:32:30,104 INFO L168 Benchmark]: Toolchain (without parser) took 23468.35 ms. Allocated memory was 176.2 MB in the beginning and 486.5 MB in the end (delta: 310.4 MB). Free memory was 149.7 MB in the beginning and 287.2 MB in the end (delta: -137.6 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:32:30,105 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 176.2 MB. Free memory is still 147.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:32:30,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.30 ms. Allocated memory is still 176.2 MB. Free memory was 148.4 MB in the beginning and 126.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:32:30,106 INFO L168 Benchmark]: Boogie Preprocessor took 96.74 ms. Allocated memory is still 176.2 MB. Free memory was 126.7 MB in the beginning and 122.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:32:30,106 INFO L168 Benchmark]: RCFGBuilder took 1485.66 ms. Allocated memory is still 176.2 MB. Free memory was 122.9 MB in the beginning and 70.4 MB in the end (delta: 52.5 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:32:30,107 INFO L168 Benchmark]: TraceAbstraction took 21206.99 ms. Allocated memory was 176.2 MB in the beginning and 486.5 MB in the end (delta: 310.4 MB). Free memory was 69.8 MB in the beginning and 287.2 MB in the end (delta: -217.4 MB). Peak memory consumption was 93.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:32:30,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 176.2 MB. Free memory is still 147.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 662.30 ms. Allocated memory is still 176.2 MB. Free memory was 148.4 MB in the beginning and 126.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.74 ms. Allocated memory is still 176.2 MB. Free memory was 126.7 MB in the beginning and 122.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1485.66 ms. Allocated memory is still 176.2 MB. Free memory was 122.9 MB in the beginning and 70.4 MB in the end (delta: 52.5 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21206.99 ms. Allocated memory was 176.2 MB in the beginning and 486.5 MB in the end (delta: 310.4 MB). Free memory was 69.8 MB in the beginning and 287.2 MB in the end (delta: -217.4 MB). Peak memory consumption was 93.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L131] int waterLevel = 1; [L132] int methaneLevelCritical = 0; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L449] int cleanupTimeShifts = 4; [L784] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=176, \old(head)=182, \old(head)=170, \old(methaneLevelCritical)=151, \old(pumpRunning)=142, \old(systemActive)=141, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L523] int retValue_acc ; [L524] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L529] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L530] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L530] tmp = valid_product() [L532] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L534] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L535] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L517] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L547] int splverifierCounter ; [L548] int tmp ; [L549] int tmp___0 ; [L550] int tmp___1 ; [L551] int tmp___2 ; [L554] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L556] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L558] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L564] tmp = __VERIFIER_nondet_int() [L566] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L568] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L149] COND TRUE waterLevel < 2 [L150] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L574] tmp___0 = __VERIFIER_nondet_int() [L576] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L584] tmp___2 = __VERIFIER_nondet_int() [L586] COND FALSE !(\read(tmp___2)) [L592] tmp___1 = __VERIFIER_nondet_int() [L594] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L596] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L429] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L436] systemActive = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L596] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L603] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L238] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L245] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L253] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L93] int tmp ; [L94] int tmp___0 ; [L95] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L99] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L170] int retValue_acc ; [L173] retValue_acc = methaneLevelCritical [L174] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L99] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L99] tmp = isMethaneLevelCritical() [L101] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L105] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L202] int retValue_acc ; [L205] retValue_acc = waterLevel [L206] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L105] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L105] tmp___0 = getWaterLevel() [L107] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L109] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L362] int retValue_acc ; [L365] retValue_acc = pumpRunning [L366] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L109] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L109] tmp___1 = isPumpRunning() [L111] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L115] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L46] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 682 SDtfs, 1283 SDslu, 454 SDs, 0 SdLazy, 2480 SolverSat, 871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=767occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 87900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...