/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:54:35,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:54:35,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:54:35,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:54:35,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:54:35,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:54:35,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:54:35,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:54:35,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:54:35,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:54:35,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:54:35,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:54:35,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:54:35,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:54:35,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:54:35,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:54:35,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:54:35,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:54:35,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:54:35,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:54:35,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:54:35,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:54:35,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:54:35,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:54:35,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:54:35,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:54:35,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:54:35,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:54:35,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:54:35,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:54:35,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:54:35,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:54:35,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:54:35,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:54:35,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:54:35,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:54:35,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:54:35,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:54:35,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:54:35,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:54:35,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:54:35,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:54:35,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:54:35,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:54:35,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:54:35,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:54:35,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:54:35,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:54:35,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:54:35,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:54:35,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:54:35,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:54:35,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:54:35,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:54:35,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:54:35,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:54:35,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:54:35,180 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:54:35,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:54:35,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:54:35,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:54:35,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:54:35,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:54:35,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:54:35,182 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:54:35,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:54:35,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:54:35,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:54:35,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:54:35,677 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:54:35,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2021-02-21 18:54:35,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342c69908/9df1e1153d12422388dd1107be487929/FLAG695a5820b [2021-02-21 18:54:36,407 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:54:36,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2021-02-21 18:54:36,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342c69908/9df1e1153d12422388dd1107be487929/FLAG695a5820b [2021-02-21 18:54:36,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/342c69908/9df1e1153d12422388dd1107be487929 [2021-02-21 18:54:36,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:54:36,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:54:36,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:54:36,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:54:36,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:54:36,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:54:36" (1/1) ... [2021-02-21 18:54:36,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a28ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:36, skipping insertion in model container [2021-02-21 18:54:36,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:54:36" (1/1) ... [2021-02-21 18:54:36,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:54:36,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:54:36,984 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_product01.cil.c[4729,4742] [2021-02-21 18:54:37,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:54:37,101 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:54:37,171 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_product01.cil.c[4729,4742] [2021-02-21 18:54:37,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:54:37,277 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:54:37,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37 WrapperNode [2021-02-21 18:54:37,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:54:37,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:54:37,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:54:37,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:54:37,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... [2021-02-21 18:54:37,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:54:37,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:54:37,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:54:37,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:54:37,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:54:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:54:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:54:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:54:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:54:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:54:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:54:37,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:54:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:54:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:54:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:54:37,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:54:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:54:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:54:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:54:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:54:37,486 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:54:37,487 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:54:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:54:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:54:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:54:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:54:37,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:54:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:54:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:54:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:54:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:54:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:54:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:54:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:54:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:54:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:54:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:54:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:54:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:54:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:54:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:54:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:54:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:54:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:54:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:54:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:54:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:54:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:54:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:54:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:54:39,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:54:39,116 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:54:39,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:54:39 BoogieIcfgContainer [2021-02-21 18:54:39,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:54:39,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:54:39,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:54:39,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:54:39,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:54:36" (1/3) ... [2021-02-21 18:54:39,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525e91a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:54:39, skipping insertion in model container [2021-02-21 18:54:39,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:54:37" (2/3) ... [2021-02-21 18:54:39,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525e91a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:54:39, skipping insertion in model container [2021-02-21 18:54:39,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:54:39" (3/3) ... [2021-02-21 18:54:39,132 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2021-02-21 18:54:39,139 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:54:39,145 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:54:39,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:54:39,190 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:54:39,191 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:54:39,191 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:54:39,191 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:54:39,191 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:54:39,191 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:54:39,192 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:54:39,192 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:54:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2021-02-21 18:54:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:54:39,233 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:39,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:39,235 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1229071768, now seen corresponding path program 1 times [2021-02-21 18:54:39,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:39,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455077315] [2021-02-21 18:54:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:39,335 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:39,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:39,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:39,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:39,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,500 WARN L202 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:54:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:54:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:54:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:40,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:40,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:40,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455077315] [2021-02-21 18:54:40,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:40,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:54:40,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779015909] [2021-02-21 18:54:40,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:54:40,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:54:40,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:54:40,751 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 3 states. [2021-02-21 18:54:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:42,675 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2021-02-21 18:54:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:54:42,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:54:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:42,693 INFO L225 Difference]: With dead ends: 371 [2021-02-21 18:54:42,693 INFO L226 Difference]: Without dead ends: 243 [2021-02-21 18:54:42,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:54:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-21 18:54:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2021-02-21 18:54:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-21 18:54:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2021-02-21 18:54:42,827 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 158 [2021-02-21 18:54:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:42,828 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2021-02-21 18:54:42,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:54:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2021-02-21 18:54:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:54:42,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:42,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:42,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:54:42,834 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash 154637517, now seen corresponding path program 1 times [2021-02-21 18:54:42,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:42,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079663421] [2021-02-21 18:54:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:42,841 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:42,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:42,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:42,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:42,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:42,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:42,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,602 WARN L202 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:54:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:54:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:54:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:43,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:43,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:43,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079663421] [2021-02-21 18:54:43,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:43,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:54:43,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884270168] [2021-02-21 18:54:43,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:54:43,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:43,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:54:43,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:54:43,752 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 4 states. [2021-02-21 18:54:45,035 WARN L202 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:54:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:45,995 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-02-21 18:54:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:54:45,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:54:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:46,013 INFO L225 Difference]: With dead ends: 287 [2021-02-21 18:54:46,013 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 18:54:46,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:54:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 18:54:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-21 18:54:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-21 18:54:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2021-02-21 18:54:46,095 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 159 [2021-02-21 18:54:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:46,096 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2021-02-21 18:54:46,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:54:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2021-02-21 18:54:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:54:46,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:46,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:46,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:54:46,100 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2069493044, now seen corresponding path program 1 times [2021-02-21 18:54:46,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:46,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742343075] [2021-02-21 18:54:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:46,104 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:46,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:46,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:46,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:54:46,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,876 WARN L202 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:54:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:46,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:46,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:46,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:54:47,013 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:54:47,016 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:54:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:47,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:47,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:54:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:47,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:47,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:54:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:47,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:47,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:54:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:47,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:47,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:47,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742343075] [2021-02-21 18:54:47,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:47,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:54:47,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927244552] [2021-02-21 18:54:47,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:54:47,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:54:47,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:54:47,110 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand 9 states. [2021-02-21 18:54:48,172 WARN L202 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:54:48,988 WARN L202 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:54:49,750 WARN L202 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:54:50,507 WARN L202 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:51,261 WARN L202 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:51,978 WARN L202 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:54:53,437 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2021-02-21 18:54:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:54:53,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:54:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:54:53,444 INFO L225 Difference]: With dead ends: 307 [2021-02-21 18:54:53,445 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 18:54:53,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:54:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 18:54:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-21 18:54:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-21 18:54:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2021-02-21 18:54:53,541 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 168 [2021-02-21 18:54:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:54:53,542 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2021-02-21 18:54:53,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:54:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2021-02-21 18:54:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 18:54:53,545 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:54:53,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:54:53,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:54:53,546 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:54:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:54:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash 313824382, now seen corresponding path program 1 times [2021-02-21 18:54:53,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:54:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296845663] [2021-02-21 18:54:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:54:53,550 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:54:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:53,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:53,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:53,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,375 WARN L202 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:54:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:54:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:54:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:54:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:54:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:54:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:54:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:54:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 18:54:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:54:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:54,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:54:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:54:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:54:54,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:54:54,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:54:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:54:54,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296845663] [2021-02-21 18:54:54,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:54:54,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 18:54:54,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930439401] [2021-02-21 18:54:54,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 18:54:54,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:54:54,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 18:54:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-21 18:54:54,549 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand 8 states. [2021-02-21 18:54:55,557 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:54:57,683 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:58,428 WARN L202 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:54:59,170 WARN L202 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:54:59,919 WARN L202 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:55:00,609 WARN L202 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:55:01,344 WARN L202 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:55:02,062 WARN L202 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:55:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:55:02,659 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2021-02-21 18:55:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 18:55:02,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-21 18:55:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:55:02,664 INFO L225 Difference]: With dead ends: 373 [2021-02-21 18:55:02,664 INFO L226 Difference]: Without dead ends: 292 [2021-02-21 18:55:02,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-21 18:55:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-21 18:55:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 267. [2021-02-21 18:55:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-21 18:55:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-21 18:55:02,790 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 171 [2021-02-21 18:55:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:55:02,791 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-21 18:55:02,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 18:55:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-21 18:55:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:55:02,794 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:55:02,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:55:02,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:55:02,795 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:55:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:55:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1590996381, now seen corresponding path program 1 times [2021-02-21 18:55:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:55:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127866403] [2021-02-21 18:55:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:55:02,799 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:55:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:55:02,894 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:55:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:55:02,981 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:55:03,189 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:55:03,189 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:55:03,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:55:03,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:55:03 BoogieIcfgContainer [2021-02-21 18:55:03,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:55:03,214 INFO L168 Benchmark]: Toolchain (without parser) took 26502.32 ms. Allocated memory was 152.0 MB in the beginning and 345.0 MB in the end (delta: 192.9 MB). Free memory was 127.9 MB in the beginning and 212.9 MB in the end (delta: -85.0 MB). Peak memory consumption was 109.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:55:03,214 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:55:03,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 550.91 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 107.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:55:03,216 INFO L168 Benchmark]: Boogie Preprocessor took 95.92 ms. Allocated memory is still 152.0 MB. Free memory was 107.0 MB in the beginning and 103.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:55:03,216 INFO L168 Benchmark]: RCFGBuilder took 1743.90 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 122.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. [2021-02-21 18:55:03,217 INFO L168 Benchmark]: TraceAbstraction took 24088.89 ms. Allocated memory was 152.0 MB in the beginning and 345.0 MB in the end (delta: 192.9 MB). Free memory was 121.5 MB in the beginning and 212.9 MB in the end (delta: -91.4 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:55:03,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 550.91 ms. Allocated memory is still 152.0 MB. Free memory was 126.9 MB in the beginning and 107.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.92 ms. Allocated memory is still 152.0 MB. Free memory was 107.0 MB in the beginning and 103.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1743.90 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 122.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24088.89 ms. Allocated memory was 152.0 MB in the beginning and 345.0 MB in the end (delta: 192.9 MB). Free memory was 121.5 MB in the beginning and 212.9 MB in the end (delta: -91.4 MB). Peak memory consumption was 101.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 304]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int pumpRunning = 0; [L51] int systemActive = 1; [L309] int cleanupTimeShifts = 4; [L405] int waterLevel = 1; [L406] int methaneLevelCritical = 0; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L382] int retValue_acc ; [L383] int tmp ; [L387] FCALL select_helpers() [L388] FCALL select_features() [L389] CALL, EXPR valid_product() [L255] int retValue_acc ; [L258] retValue_acc = 1 [L259] return (retValue_acc); [L389] RET, EXPR valid_product() [L389] tmp = valid_product() [L391] COND TRUE \read(tmp) [L393] FCALL setup() [L394] CALL runTest() [L376] CALL test() [L162] int splverifierCounter ; [L163] int tmp ; [L164] int tmp___0 ; [L165] int tmp___1 ; [L166] int tmp___2 ; [L169] splverifierCounter = 0 [L171] COND TRUE 1 [L173] COND TRUE splverifierCounter < 4 [L179] tmp = __VERIFIER_nondet_int() [L181] COND TRUE \read(tmp) [L183] CALL waterRise() [L423] COND TRUE waterLevel < 2 [L424] waterLevel = waterLevel + 1 [L183] RET waterRise() [L189] tmp___0 = __VERIFIER_nondet_int() [L191] COND FALSE !(\read(tmp___0)) [L199] tmp___2 = __VERIFIER_nondet_int() [L201] COND TRUE \read(tmp___2) [L214] CALL timeShift() [L58] COND FALSE !(\read(pumpRunning)) [L65] COND TRUE \read(systemActive) [L67] FCALL processEnvironment() [L73] CALL __utac_acc__Specification3_spec__1() [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L273] CALL, EXPR isMethaneLevelCritical() [L444] int retValue_acc ; [L447] retValue_acc = methaneLevelCritical [L448] return (retValue_acc); [L273] RET, EXPR isMethaneLevelCritical() [L273] tmp = isMethaneLevelCritical() [L275] COND FALSE !(\read(tmp)) [L279] CALL, EXPR getWaterLevel() [L476] int retValue_acc ; [L479] retValue_acc = waterLevel [L480] return (retValue_acc); [L279] RET, EXPR getWaterLevel() [L279] tmp___0 = getWaterLevel() [L281] COND TRUE tmp___0 == 2 [L283] CALL, EXPR isPumpRunning() [L113] int retValue_acc ; [L116] retValue_acc = pumpRunning [L117] return (retValue_acc); [L283] RET, EXPR isPumpRunning() [L283] tmp___1 = isPumpRunning() [L285] COND FALSE !(\read(tmp___1)) [L289] CALL __automaton_fail() [L304] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 587 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 755 SDtfs, 705 SDslu, 1098 SDs, 0 SdLazy, 1740 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 122 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...