/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_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:56:25,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:56:25,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:56:25,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:56:25,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:56:25,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:56:25,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:56:25,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:56:25,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:56:25,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:56:25,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:56:25,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:56:25,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:56:25,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:56:25,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:56:25,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:56:25,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:56:25,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:56:25,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:56:25,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:56:25,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:56:25,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:56:25,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:56:25,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:56:25,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:56:25,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:56:25,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:56:25,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:56:25,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:56:25,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:56:25,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:56:25,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:56:25,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:56:25,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:56:25,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:56:25,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:56:25,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:56:25,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:56:25,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:56:25,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:56:25,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:56:25,683 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 18:56:25,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:56:25,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:56:25,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:56:25,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:56:25,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:56:25,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:56:25,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:56:25,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:56:25,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:56:25,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:56:25,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:56:25,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:56:25,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:56:25,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:56:25,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:56:25,713 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:56:25,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:56:25,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:56:25,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:25,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:56:25,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:56:25,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:56:25,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:56:26,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:56:26,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:56:26,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:56:26,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:56:26,158 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:56:26,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2021-02-21 18:56:26,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1cedf027/5bb6fe039d974040b471a65f7af9a40d/FLAGbc45fd7e5 [2021-02-21 18:56:26,941 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:56:26,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2021-02-21 18:56:26,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1cedf027/5bb6fe039d974040b471a65f7af9a40d/FLAGbc45fd7e5 [2021-02-21 18:56:27,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1cedf027/5bb6fe039d974040b471a65f7af9a40d [2021-02-21 18:56:27,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:56:27,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:56:27,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:27,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:56:27,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:56:27,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63519274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27, skipping insertion in model container [2021-02-21 18:56:27,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:27,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:56:27,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:56:27,757 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_product12.cil.c[17035,17048] [2021-02-21 18:56:27,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:27,788 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:56:27,948 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_product12.cil.c[17035,17048] [2021-02-21 18:56:27,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:27,985 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:56:27,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27 WrapperNode [2021-02-21 18:56:27,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:27,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:56:27,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:56:27,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:56:28,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (1/1) ... [2021-02-21 18:56:28,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:56:28,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:56:28,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:56:28,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:56:28,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (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 18:56:28,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:56:28,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:56:28,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:28,232 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:56:28,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:28,232 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:56:28,232 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:56:28,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:56:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:56:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 18:56:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 18:56:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:56:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:56:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:56:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:56:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:56:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:56:28,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:28,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:56:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:56:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:56:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:56:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:56:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:56:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:56:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:56:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:56:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:56:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:56:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:56:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:56:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:56:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:56:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:56:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:56:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:56:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:56:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:28,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:56:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:56:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:56:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:56:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:56:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:56:29,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:56:29,711 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:56:29,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:29 BoogieIcfgContainer [2021-02-21 18:56:29,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:56:29,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:56:29,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:56:29,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:56:29,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:56:27" (1/3) ... [2021-02-21 18:56:29,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc6c95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:29, skipping insertion in model container [2021-02-21 18:56:29,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:27" (2/3) ... [2021-02-21 18:56:29,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc6c95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:29, skipping insertion in model container [2021-02-21 18:56:29,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:29" (3/3) ... [2021-02-21 18:56:29,731 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2021-02-21 18:56:29,739 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:56:29,746 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:56:29,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:56:29,804 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:56:29,804 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:56:29,805 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:56:29,805 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:56:29,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:56:29,805 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:56:29,806 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:56:29,806 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:56:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states. [2021-02-21 18:56:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:56:29,868 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:29,869 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 18:56:29,870 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:29,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1529646499, now seen corresponding path program 1 times [2021-02-21 18:56:29,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734904451] [2021-02-21 18:56:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:29,965 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:30,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:30,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:30,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,107 WARN L202 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:31,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:31,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:31,335 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 18:56:31,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734904451] [2021-02-21 18:56:31,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:31,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:31,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879873484] [2021-02-21 18:56:31,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:31,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:31,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:31,361 INFO L87 Difference]: Start difference. First operand 287 states. Second operand 3 states. [2021-02-21 18:56:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:32,865 INFO L93 Difference]: Finished difference Result 400 states and 477 transitions. [2021-02-21 18:56:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:56:32,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:56:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:32,883 INFO L225 Difference]: With dead ends: 400 [2021-02-21 18:56:32,883 INFO L226 Difference]: Without dead ends: 259 [2021-02-21 18:56:32,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-21 18:56:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 219. [2021-02-21 18:56:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-21 18:56:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-21 18:56:33,039 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 158 [2021-02-21 18:56:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:33,042 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-21 18:56:33,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:56:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-21 18:56:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:56:33,059 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:33,060 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 18:56:33,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:56:33,060 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:33,062 INFO L82 PathProgramCache]: Analyzing trace with hash 910743962, now seen corresponding path program 1 times [2021-02-21 18:56:33,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:33,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259840018] [2021-02-21 18:56:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:33,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:33,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,562 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:56:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:56:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:56:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:33,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:33,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:33,665 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 18:56:33,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259840018] [2021-02-21 18:56:33,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:33,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:56:33,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692565259] [2021-02-21 18:56:33,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:56:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:56:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:56:33,669 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 4 states. [2021-02-21 18:56:34,410 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:35,145 INFO L93 Difference]: Finished difference Result 303 states and 337 transitions. [2021-02-21 18:56:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:56:35,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:56:35,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:35,160 INFO L225 Difference]: With dead ends: 303 [2021-02-21 18:56:35,160 INFO L226 Difference]: Without dead ends: 242 [2021-02-21 18:56:35,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:56:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-21 18:56:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 209. [2021-02-21 18:56:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-21 18:56:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 221 transitions. [2021-02-21 18:56:35,266 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 221 transitions. Word has length 159 [2021-02-21 18:56:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:35,267 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 221 transitions. [2021-02-21 18:56:35,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:56:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 221 transitions. [2021-02-21 18:56:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-21 18:56:35,270 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:35,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:35,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:56:35,270 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:35,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1318987135, now seen corresponding path program 1 times [2021-02-21 18:56:35,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:35,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281724871] [2021-02-21 18:56:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:35,275 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:35,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:35,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:56:35,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,753 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:35,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:56:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:56:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 18:56:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 18:56:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 18:56:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:35,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:35,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:35,931 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 18:56:35,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281724871] [2021-02-21 18:56:35,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:35,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 18:56:35,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340930927] [2021-02-21 18:56:35,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 18:56:35,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 18:56:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 18:56:35,935 INFO L87 Difference]: Start difference. First operand 209 states and 221 transitions. Second operand 10 states. [2021-02-21 18:56:36,685 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:37,114 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:56:37,546 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 18:56:37,942 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:38,342 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:38,681 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:39,723 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:56:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:41,591 INFO L93 Difference]: Finished difference Result 555 states and 643 transitions. [2021-02-21 18:56:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 18:56:41,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-21 18:56:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:41,598 INFO L225 Difference]: With dead ends: 555 [2021-02-21 18:56:41,598 INFO L226 Difference]: Without dead ends: 461 [2021-02-21 18:56:41,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-21 18:56:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-02-21 18:56:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 362. [2021-02-21 18:56:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2021-02-21 18:56:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 397 transitions. [2021-02-21 18:56:41,788 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 397 transitions. Word has length 172 [2021-02-21 18:56:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:41,789 INFO L480 AbstractCegarLoop]: Abstraction has 362 states and 397 transitions. [2021-02-21 18:56:41,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 18:56:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 397 transitions. [2021-02-21 18:56:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-02-21 18:56:41,792 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:41,792 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] [2021-02-21 18:56:41,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:56:41,793 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 699560390, now seen corresponding path program 1 times [2021-02-21 18:56:41,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:41,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797618024] [2021-02-21 18:56:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:41,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:41,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:41,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:41,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,224 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:56:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:56:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-21 18:56:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-21 18:56:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:42,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-21 18:56:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:42,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:42,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:42,402 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 18:56:42,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797618024] [2021-02-21 18:56:42,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:42,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:56:42,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319060478] [2021-02-21 18:56:42,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:56:42,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:42,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:56:42,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:56:42,405 INFO L87 Difference]: Start difference. First operand 362 states and 397 transitions. Second operand 9 states. [2021-02-21 18:56:43,039 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:44,681 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:45,155 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:45,607 WARN L202 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:46,020 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:46,349 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:56:46,776 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:47,162 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:56:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:47,808 INFO L93 Difference]: Finished difference Result 914 states and 1082 transitions. [2021-02-21 18:56:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:56:47,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2021-02-21 18:56:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:47,815 INFO L225 Difference]: With dead ends: 914 [2021-02-21 18:56:47,815 INFO L226 Difference]: Without dead ends: 667 [2021-02-21 18:56:47,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:56:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-02-21 18:56:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 584. [2021-02-21 18:56:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2021-02-21 18:56:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 660 transitions. [2021-02-21 18:56:48,068 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 660 transitions. Word has length 175 [2021-02-21 18:56:48,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:48,069 INFO L480 AbstractCegarLoop]: Abstraction has 584 states and 660 transitions. [2021-02-21 18:56:48,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:56:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 660 transitions. [2021-02-21 18:56:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-21 18:56:48,073 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:48,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:48,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:56:48,073 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1301282521, now seen corresponding path program 1 times [2021-02-21 18:56:48,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:48,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814065801] [2021-02-21 18:56:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:48,077 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:48,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:48,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:48,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:48,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,426 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:56:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 18:56:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 18:56:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 18:56:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-21 18:56:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-21 18:56:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-21 18:56:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:48,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:48,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:48,606 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 18:56:48,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814065801] [2021-02-21 18:56:48,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:48,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 18:56:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973043491] [2021-02-21 18:56:48,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 18:56:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 18:56:48,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 18:56:48,609 INFO L87 Difference]: Start difference. First operand 584 states and 660 transitions. Second operand 6 states. [2021-02-21 18:56:49,276 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:56:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:56:50,520 INFO L93 Difference]: Finished difference Result 1073 states and 1257 transitions. [2021-02-21 18:56:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 18:56:50,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2021-02-21 18:56:50,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:56:50,527 INFO L225 Difference]: With dead ends: 1073 [2021-02-21 18:56:50,527 INFO L226 Difference]: Without dead ends: 604 [2021-02-21 18:56:50,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 18:56:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-02-21 18:56:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 535. [2021-02-21 18:56:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2021-02-21 18:56:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 586 transitions. [2021-02-21 18:56:50,830 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 586 transitions. Word has length 180 [2021-02-21 18:56:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:56:50,831 INFO L480 AbstractCegarLoop]: Abstraction has 535 states and 586 transitions. [2021-02-21 18:56:50,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 18:56:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 586 transitions. [2021-02-21 18:56:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-21 18:56:50,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:50,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:56:50,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:56:50,835 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1883320083, now seen corresponding path program 1 times [2021-02-21 18:56:50,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:50,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074828924] [2021-02-21 18:56:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:50,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:50,932 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:56:51,023 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:56:51,273 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:56:51,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:56:51,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 18:56:51,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:56:51 BoogieIcfgContainer [2021-02-21 18:56:51,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:56:51,310 INFO L168 Benchmark]: Toolchain (without parser) took 24068.71 ms. Allocated memory was 177.2 MB in the beginning and 580.9 MB in the end (delta: 403.7 MB). Free memory was 151.3 MB in the beginning and 535.7 MB in the end (delta: -384.4 MB). Peak memory consumption was 351.6 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:51,317 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 151.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:56:51,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.72 ms. Allocated memory is still 177.2 MB. Free memory was 150.0 MB in the beginning and 130.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:51,318 INFO L168 Benchmark]: Boogie Preprocessor took 102.54 ms. Allocated memory is still 177.2 MB. Free memory was 130.1 MB in the beginning and 126.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:51,319 INFO L168 Benchmark]: RCFGBuilder took 1627.65 ms. Allocated memory was 177.2 MB in the beginning and 231.7 MB in the end (delta: 54.5 MB). Free memory was 126.2 MB in the beginning and 171.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:51,320 INFO L168 Benchmark]: TraceAbstraction took 21587.51 ms. Allocated memory was 231.7 MB in the beginning and 580.9 MB in the end (delta: 349.2 MB). Free memory was 171.0 MB in the beginning and 535.7 MB in the end (delta: -364.6 MB). Peak memory consumption was 315.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:56:51,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 151.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 726.72 ms. Allocated memory is still 177.2 MB. Free memory was 150.0 MB in the beginning and 130.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.54 ms. Allocated memory is still 177.2 MB. Free memory was 130.1 MB in the beginning and 126.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1627.65 ms. Allocated memory was 177.2 MB in the beginning and 231.7 MB in the end (delta: 54.5 MB). Free memory was 126.2 MB in the beginning and 171.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21587.51 ms. Allocated memory was 231.7 MB in the beginning and 580.9 MB in the end (delta: 349.2 MB). Free memory was 171.0 MB in the beginning and 535.7 MB in the end (delta: -364.6 MB). Peak memory consumption was 315.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 892]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L308] int waterLevel = 1; [L309] int methaneLevelCritical = 0; [L595] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L792] int cleanupTimeShifts = 4; [L865] int retValue_acc ; [L866] int tmp ; [L870] FCALL select_helpers() [L871] FCALL select_features() [L872] CALL, EXPR valid_product() [L417] int retValue_acc ; [L420] retValue_acc = 1 [L421] return (retValue_acc); [L872] RET, EXPR valid_product() [L872] tmp = valid_product() [L874] COND TRUE \read(tmp) [L876] FCALL setup() [L877] CALL runTest() [L859] CALL test() [L87] int splverifierCounter ; [L88] int tmp ; [L89] int tmp___0 ; [L90] int tmp___1 ; [L91] int tmp___2 ; [L94] splverifierCounter = 0 [L96] COND TRUE 1 [L98] COND TRUE splverifierCounter < 4 [L104] tmp = __VERIFIER_nondet_int() [L106] COND TRUE \read(tmp) [L108] CALL waterRise() [L326] COND TRUE waterLevel < 2 [L327] waterLevel = waterLevel + 1 [L108] RET waterRise() [L114] tmp___0 = __VERIFIER_nondet_int() [L116] COND FALSE !(\read(tmp___0)) [L124] tmp___2 = __VERIFIER_nondet_int() [L126] COND TRUE \read(tmp___2) [L128] CALL startSystem() [L303] systemActive = 1 [L128] RET startSystem() [L143] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] FCALL processEnvironment() [L182] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L347] int retValue_acc ; [L350] retValue_acc = methaneLevelCritical [L351] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L379] int retValue_acc ; [L382] retValue_acc = waterLevel [L383] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L892] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 606 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1009 SDtfs, 1597 SDslu, 1503 SDs, 0 SdLazy, 2529 SolverSat, 506 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=584occurred 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: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...