/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:00:52,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:00:52,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:00:52,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:00:52,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:00:52,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:00:52,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:00:52,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:00:52,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:00:52,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:00:52,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:00:52,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:00:52,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:00:52,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:00:52,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:00:52,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:00:52,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:00:52,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:00:52,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:00:52,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:00:52,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:00:52,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:00:52,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:00:52,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:00:52,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:00:52,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:00:52,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:00:52,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:00:52,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:00:52,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:00:52,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:00:52,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:00:52,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:00:52,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:00:52,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:00:52,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:00:52,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:00:52,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:00:52,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:00:52,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:00:52,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:00:52,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:00:52,320 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:00:52,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:00:52,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:00:52,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:00:52,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:00:52,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:00:52,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:00:52,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:00:52,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:00:52,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:00:52,328 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:00:52,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:00:52,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:00:52,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:00:52,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:00:52,329 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:00:52,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:00:52,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:00:52,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:00:52,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:00:52,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:00:52,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:00:52,331 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:00:52,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:00:52,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:00:52,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:00:52,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:00:52,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:00:52,719 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:00:52,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2021-02-22 01:00:52,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216d4a44/c800b9ba2e5a406ebab28610bb69c14b/FLAGef1404ac1 [2021-02-22 01:00:53,524 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:00:53,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2021-02-22 01:00:53,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216d4a44/c800b9ba2e5a406ebab28610bb69c14b/FLAGef1404ac1 [2021-02-22 01:00:53,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216d4a44/c800b9ba2e5a406ebab28610bb69c14b [2021-02-22 01:00:53,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:00:53,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:00:53,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:00:53,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:00:53,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:00:53,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:00:53" (1/1) ... [2021-02-22 01:00:53,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8cea9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:53, skipping insertion in model container [2021-02-22 01:00:53,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:00:53" (1/1) ... [2021-02-22 01:00:53,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:00:53,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:00:54,085 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] [2021-02-22 01:00:54,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:00:54,195 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:00:54,226 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] [2021-02-22 01:00:54,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:00:54,318 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:00:54,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54 WrapperNode [2021-02-22 01:00:54,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:00:54,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:00:54,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:00:54,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:00:54,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (1/1) ... [2021-02-22 01:00:54,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:00:54,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:00:54,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:00:54,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:00:54,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (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 [2021-02-22 01:00:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:00:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:00:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:00:54,591 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:00:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:00:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:00:54,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:00:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:00:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:00:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:00:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:00:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:00:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:00:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:00:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:00:54,595 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:00:54,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:00:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:00:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:00:54,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:00:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:00:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:00:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:00:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:00:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:00:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:00:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:00:54,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:00:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:00:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:00:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:00:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:00:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:00:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:00:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:00:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:00:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:00:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:00:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:00:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:00:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:00:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:00:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:00:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:00:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:00:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:00:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:00:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:00:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:00:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:00:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:00:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:00:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:00:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:00:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:00:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:00:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:00:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:00:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:00:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:00:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:00:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:00:54,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:00:56,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:00:56,218 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:00:56,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:00:56 BoogieIcfgContainer [2021-02-22 01:00:56,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:00:56,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:00:56,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:00:56,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:00:56,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:00:53" (1/3) ... [2021-02-22 01:00:56,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e0e5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:00:56, skipping insertion in model container [2021-02-22 01:00:56,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:00:54" (2/3) ... [2021-02-22 01:00:56,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e0e5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:00:56, skipping insertion in model container [2021-02-22 01:00:56,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:00:56" (3/3) ... [2021-02-22 01:00:56,230 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2021-02-22 01:00:56,239 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:00:56,245 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:00:56,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:00:56,288 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:00:56,288 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:00:56,289 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:00:56,289 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:00:56,289 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:00:56,289 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:00:56,289 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:00:56,289 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:00:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2021-02-22 01:00:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:00:56,330 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:00:56,331 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] [2021-02-22 01:00:56,332 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:00:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:00:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1229071768, now seen corresponding path program 1 times [2021-02-22 01:00:56,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:00:56,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445458125] [2021-02-22 01:00:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:00:56,425 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:00:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:56,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:56,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:56,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:56,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,154 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:00:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:00:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:00:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:00:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:00:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:00:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:00:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:00:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:00:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:57,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:57,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:00:57,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445458125] [2021-02-22 01:00:57,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:00:57,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:00:57,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364327691] [2021-02-22 01:00:57,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:00:57,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:00:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:00:57,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:00:57,414 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 3 states. [2021-02-22 01:00:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:00:58,862 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2021-02-22 01:00:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:00:58,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:00:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:00:58,879 INFO L225 Difference]: With dead ends: 371 [2021-02-22 01:00:58,880 INFO L226 Difference]: Without dead ends: 243 [2021-02-22 01:00:58,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:00:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-22 01:00:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2021-02-22 01:00:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-22 01:00:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2021-02-22 01:00:59,040 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 158 [2021-02-22 01:00:59,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:00:59,041 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2021-02-22 01:00:59,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:00:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2021-02-22 01:00:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:00:59,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:00:59,046 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] [2021-02-22 01:00:59,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:00:59,047 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:00:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:00:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash 154637517, now seen corresponding path program 1 times [2021-02-22 01:00:59,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:00:59,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519941247] [2021-02-22 01:00:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:00:59,054 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:00:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:00:59,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,595 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:00:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:00:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:00:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:00:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:00:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:00:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:00:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:00:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:00:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:00:59,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:00:59,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:00:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:00:59,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519941247] [2021-02-22 01:00:59,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:00:59,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:00:59,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25912114] [2021-02-22 01:00:59,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:00:59,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:00:59,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:00:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:00:59,731 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 4 states. [2021-02-22 01:01:00,503 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:01:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:01:01,120 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-02-22 01:01:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:01:01,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:01:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:01:01,126 INFO L225 Difference]: With dead ends: 287 [2021-02-22 01:01:01,126 INFO L226 Difference]: Without dead ends: 226 [2021-02-22 01:01:01,128 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 [2021-02-22 01:01:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-22 01:01:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-22 01:01:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-22 01:01:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2021-02-22 01:01:01,225 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 159 [2021-02-22 01:01:01,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:01:01,226 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2021-02-22 01:01:01,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:01:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2021-02-22 01:01:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:01:01,229 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:01:01,229 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] [2021-02-22 01:01:01,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:01:01,229 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:01:01,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:01:01,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2069493044, now seen corresponding path program 1 times [2021-02-22 01:01:01,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:01:01,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627512158] [2021-02-22 01:01:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:01:01,234 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:01:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:01,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:01,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:01,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:01:01,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,675 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:01:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:01:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:01:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:01:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:01:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:01:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:01:01,816 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:01:01,817 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:01:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:01:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:01:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:01:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:01:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:01,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:01,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:01:01,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627512158] [2021-02-22 01:01:01,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:01:01,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:01:01,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550416770] [2021-02-22 01:01:01,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:01:01,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:01:01,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:01:01,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:01:01,974 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand 9 states. [2021-02-22 01:01:02,549 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:01:03,002 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:01:03,369 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:01:03,746 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:04,104 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:01:04,475 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:01:05,570 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2021-02-22 01:01:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:01:05,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:01:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:01:05,574 INFO L225 Difference]: With dead ends: 307 [2021-02-22 01:01:05,574 INFO L226 Difference]: Without dead ends: 226 [2021-02-22 01:01:05,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:01:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-22 01:01:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-22 01:01:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-22 01:01:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2021-02-22 01:01:05,654 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 168 [2021-02-22 01:01:05,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:01:05,655 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2021-02-22 01:01:05,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:01:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2021-02-22 01:01:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-22 01:01:05,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:01:05,658 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] [2021-02-22 01:01:05,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:01:05,658 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:01:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:01:05,659 INFO L82 PathProgramCache]: Analyzing trace with hash 313824382, now seen corresponding path program 1 times [2021-02-22 01:01:05,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:01:05,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407446127] [2021-02-22 01:01:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:01:05,663 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:01:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:05,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:05,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:05,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,101 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:01:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:01:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:01:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:01:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:01:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:01:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:01:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:01:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 01:01:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 01:01:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:06,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-22 01:01:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:06,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:06,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:01:06,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407446127] [2021-02-22 01:01:06,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:01:06,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:01:06,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318151192] [2021-02-22 01:01:06,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:01:06,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:01:06,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:01:06,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:01:06,311 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand 8 states. [2021-02-22 01:01:06,986 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:01:08,316 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:08,685 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:01:09,059 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:09,462 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:01:09,862 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:01:10,244 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:10,589 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:01:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:01:10,925 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2021-02-22 01:01:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:01:10,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-22 01:01:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:01:10,929 INFO L225 Difference]: With dead ends: 373 [2021-02-22 01:01:10,929 INFO L226 Difference]: Without dead ends: 292 [2021-02-22 01:01:10,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:01:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-22 01:01:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 267. [2021-02-22 01:01:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-22 01:01:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-22 01:01:11,044 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 171 [2021-02-22 01:01:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:01:11,044 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-22 01:01:11,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:01:11,045 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-22 01:01:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-22 01:01:11,048 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:01:11,048 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] [2021-02-22 01:01:11,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:01:11,048 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:01:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:01:11,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1590996381, now seen corresponding path program 1 times [2021-02-22 01:01:11,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:01:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044651198] [2021-02-22 01:01:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:01:11,053 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:01:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:01:11,123 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:01:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:01:11,197 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:01:11,412 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:01:11,412 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:01:11,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:01:11,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:01:11 BoogieIcfgContainer [2021-02-22 01:01:11,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:01:11,462 INFO L168 Benchmark]: Toolchain (without parser) took 17670.18 ms. Allocated memory was 163.6 MB in the beginning and 421.5 MB in the end (delta: 257.9 MB). Free memory was 139.0 MB in the beginning and 258.7 MB in the end (delta: -119.7 MB). Peak memory consumption was 138.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:01:11,464 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 163.6 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:01:11,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.01 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 118.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:01:11,472 INFO L168 Benchmark]: Boogie Preprocessor took 115.66 ms. Allocated memory is still 163.6 MB. Free memory was 118.3 MB in the beginning and 114.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:01:11,472 INFO L168 Benchmark]: RCFGBuilder took 1776.34 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 114.6 MB in the beginning and 146.8 MB in the end (delta: -32.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:01:11,473 INFO L168 Benchmark]: TraceAbstraction took 15232.53 ms. Allocated memory was 202.4 MB in the beginning and 421.5 MB in the end (delta: 219.2 MB). Free memory was 146.3 MB in the beginning and 258.7 MB in the end (delta: -112.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:01:11,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 163.6 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 517.01 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 118.3 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.66 ms. Allocated memory is still 163.6 MB. Free memory was 118.3 MB in the beginning and 114.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1776.34 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 114.6 MB in the beginning and 146.8 MB in the end (delta: -32.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15232.53 ms. Allocated memory was 202.4 MB in the beginning and 421.5 MB in the end (delta: 219.2 MB). Free memory was 146.3 MB in the beginning and 258.7 MB in the end (delta: -112.4 MB). Peak memory consumption was 106.2 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: 15.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.1s, 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, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.5s 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...