./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/psyco/psyco_abp_1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e1064ca8851049d7703c5646c80faf613ee8a93 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 19:28:07,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 19:28:07,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 19:28:07,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 19:28:07,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 19:28:07,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 19:28:07,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 19:28:07,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 19:28:07,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 19:28:07,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 19:28:07,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 19:28:07,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 19:28:07,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 19:28:07,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 19:28:07,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 19:28:07,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 19:28:07,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 19:28:07,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 19:28:07,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 19:28:07,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 19:28:07,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 19:28:07,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 19:28:07,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 19:28:07,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 19:28:07,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 19:28:07,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 19:28:07,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 19:28:07,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 19:28:07,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 19:28:07,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 19:28:07,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 19:28:07,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 19:28:07,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 19:28:07,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 19:28:07,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 19:28:07,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 19:28:07,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 19:28:07,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 19:28:07,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 19:28:07,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 19:28:07,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 19:28:07,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 19:28:07,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 19:28:07,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 19:28:07,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 19:28:07,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 19:28:07,679 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 19:28:07,679 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 19:28:07,680 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 19:28:07,680 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 19:28:07,680 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 19:28:07,680 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 19:28:07,681 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 19:28:07,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 19:28:07,681 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 19:28:07,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 19:28:07,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 19:28:07,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 19:28:07,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 19:28:07,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 19:28:07,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 19:28:07,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 19:28:07,686 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 19:28:07,686 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e1064ca8851049d7703c5646c80faf613ee8a93 [2021-07-06 19:28:07,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 19:28:07,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 19:28:07,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 19:28:07,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 19:28:07,979 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 19:28:07,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-07-06 19:28:08,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51661c46b/6b793a98ef37417cb8e72964d066e400/FLAG562d4f1c0 [2021-07-06 19:28:08,484 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 19:28:08,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-07-06 19:28:08,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51661c46b/6b793a98ef37417cb8e72964d066e400/FLAG562d4f1c0 [2021-07-06 19:28:08,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51661c46b/6b793a98ef37417cb8e72964d066e400 [2021-07-06 19:28:08,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 19:28:08,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 19:28:08,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 19:28:08,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 19:28:08,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 19:28:08,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:28:08" (1/1) ... [2021-07-06 19:28:08,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613e45d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:08, skipping insertion in model container [2021-07-06 19:28:08,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:28:08" (1/1) ... [2021-07-06 19:28:08,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 19:28:08,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 19:28:09,109 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-07-06 19:28:09,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:28:09,120 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 19:28:09,175 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c[24818,24831] [2021-07-06 19:28:09,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:28:09,189 INFO L208 MainTranslator]: Completed translation [2021-07-06 19:28:09,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09 WrapperNode [2021-07-06 19:28:09,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 19:28:09,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 19:28:09,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 19:28:09,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 19:28:09,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 19:28:09,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 19:28:09,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 19:28:09,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 19:28:09,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 19:28:09,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 19:28:09,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 19:28:09,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 19:28:09,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (1/1) ... [2021-07-06 19:28:09,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:28:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:28:09,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 19:28:09,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 19:28:09,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 19:28:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 19:28:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 19:28:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 19:28:10,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 19:28:10,076 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-06 19:28:10,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:10 BoogieIcfgContainer [2021-07-06 19:28:10,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 19:28:10,080 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 19:28:10,080 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 19:28:10,083 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 19:28:10,083 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:10,084 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 07:28:08" (1/3) ... [2021-07-06 19:28:10,085 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d77deb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:28:10, skipping insertion in model container [2021-07-06 19:28:10,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:10,085 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:09" (2/3) ... [2021-07-06 19:28:10,086 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d77deb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:28:10, skipping insertion in model container [2021-07-06 19:28:10,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:10,086 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:10" (3/3) ... [2021-07-06 19:28:10,087 INFO L389 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-1.c [2021-07-06 19:28:10,135 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 19:28:10,135 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 19:28:10,135 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 19:28:10,136 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 19:28:10,136 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 19:28:10,136 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 19:28:10,136 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 19:28:10,136 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 19:28:10,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 19:28:10,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-07-06 19:28:10,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:10,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:10,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:28:10,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:28:10,197 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 19:28:10,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 19:28:10,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-07-06 19:28:10,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:10,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:10,204 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:28:10,204 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:28:10,209 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~nondet43, main_#t~nondet44, main_#t~nondet45, main_#t~nondet46, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 33#L26-2true [2021-07-06 19:28:10,210 INFO L793 eck$LassoCheckResult]: Loop: 33#L26-2true goto; 14#L563true assume !false;main_~P1~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P2~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~P3~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~P4~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~P5~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~P6~0 := main_#t~nondet12;havoc main_#t~nondet12;main_~P7~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~P8~0 := main_#t~nondet14;havoc main_#t~nondet14;main_~P9~0 := main_#t~nondet15;havoc main_#t~nondet15; 10#L40true assume !(main_~this_expect~0 > 16); 5#L40-2true assume !(0 == main_~q~0); 17#L65true assume !(1 == main_~q~0); 74#L165true assume !(2 == main_~q~0); 40#L265true assume !(3 == main_~q~0); 6#L365true assume !(4 == main_~q~0); 85#L465true assume !(5 == main_~q~0); 33#L26-2true [2021-07-06 19:28:10,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,216 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-07-06 19:28:10,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751938716] [2021-07-06 19:28:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,306 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,334 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2073703402, now seen corresponding path program 1 times [2021-07-06 19:28:10,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180786812] [2021-07-06 19:28:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,371 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,379 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,385 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2006272616, now seen corresponding path program 1 times [2021-07-06 19:28:10,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187963668] [2021-07-06 19:28:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:28:10,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:10,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:28:10,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:10,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 19:28:10,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:10,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:28:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:28:10,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:28:10,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187963668] [2021-07-06 19:28:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187963668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:28:10,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:28:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 19:28:10,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897194093] [2021-07-06 19:28:10,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:10,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-07-06 19:28:10,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:28:10,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:28:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:28:10,595 INFO L87 Difference]: Start difference. First operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 19:28:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:28:10,719 INFO L93 Difference]: Finished difference Result 113 states and 210 transitions. [2021-07-06 19:28:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:28:10,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 210 transitions. [2021-07-06 19:28:10,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-07-06 19:28:10,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 82 states and 125 transitions. [2021-07-06 19:28:10,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-07-06 19:28:10,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-07-06 19:28:10,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 125 transitions. [2021-07-06 19:28:10,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:28:10,741 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-07-06 19:28:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 125 transitions. [2021-07-06 19:28:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-07-06 19:28:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 19:28:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 125 transitions. [2021-07-06 19:28:10,771 INFO L704 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-07-06 19:28:10,771 INFO L587 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-07-06 19:28:10,772 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 19:28:10,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 125 transitions. [2021-07-06 19:28:10,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-07-06 19:28:10,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:10,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:10,778 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 19:28:10,778 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 19:28:10,778 INFO L791 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(16);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 259#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~nondet43, main_#t~nondet44, main_#t~nondet45, main_#t~nondet46, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 260#L26-2 goto; 266#L563 [2021-07-06 19:28:10,779 INFO L793 eck$LassoCheckResult]: Loop: 266#L563 assume !false;main_~P1~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P2~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~P3~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~P4~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~P5~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~P6~0 := main_#t~nondet12;havoc main_#t~nondet12;main_~P7~0 := main_#t~nondet13;havoc main_#t~nondet13;main_~P8~0 := main_#t~nondet14;havoc main_#t~nondet14;main_~P9~0 := main_#t~nondet15;havoc main_#t~nondet15; 254#L40 assume !(main_~this_expect~0 > 16); 240#L40-2 assume 0 == main_~q~0; 241#L46 assume !(0 != main_#t~nondet16);havoc main_#t~nondet16; 266#L563 [2021-07-06 19:28:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-07-06 19:28:10,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814041201] [2021-07-06 19:28:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,810 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,824 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,837 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1267254, now seen corresponding path program 1 times [2021-07-06 19:28:10,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792454122] [2021-07-06 19:28:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,849 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,856 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:10,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:10,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1805953496, now seen corresponding path program 1 times [2021-07-06 19:28:10,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:10,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685193284] [2021-07-06 19:28:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:10,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,879 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:10,889 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:10,892 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:10,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:10,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-07-06 19:28:11,139 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-07-06 19:28:11,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:11,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-07-06 19:28:11,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 07:28:11 BoogieIcfgContainer [2021-07-06 19:28:11,278 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 19:28:11,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 19:28:11,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 19:28:11,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 19:28:11,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:10" (3/4) ... [2021-07-06 19:28:11,281 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 19:28:11,324 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 19:28:11,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 19:28:11,325 INFO L168 Benchmark]: Toolchain (without parser) took 2478.93 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.7 MB in the beginning and 53.3 MB in the end (delta: -22.6 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,325 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:28:11,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.71 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 43.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.47 ms. Allocated memory is still 67.1 MB. Free memory was 43.7 MB in the beginning and 39.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,330 INFO L168 Benchmark]: Boogie Preprocessor took 43.41 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 36.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,330 INFO L168 Benchmark]: RCFGBuilder took 762.47 ms. Allocated memory is still 67.1 MB. Free memory was 36.4 MB in the beginning and 31.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,330 INFO L168 Benchmark]: BuchiAutomizer took 1198.17 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 55.3 MB in the end (delta: -23.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,331 INFO L168 Benchmark]: Witness Printer took 44.94 ms. Allocated memory is still 81.8 MB. Free memory was 54.7 MB in the beginning and 53.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:11,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.71 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.5 MB in the beginning and 43.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.47 ms. Allocated memory is still 67.1 MB. Free memory was 43.7 MB in the beginning and 39.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.41 ms. Allocated memory is still 67.1 MB. Free memory was 39.4 MB in the beginning and 36.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 762.47 ms. Allocated memory is still 67.1 MB. Free memory was 36.4 MB in the beginning and 31.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1198.17 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 31.3 MB in the beginning and 55.3 MB in the end (delta: -23.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 44.94 ms. Allocated memory is still 81.8 MB. Free memory was 54.7 MB in the beginning and 53.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 82 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 20.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 82 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 204 SDtfs, 5 SDslu, 158 SDs, 0 SdLazy, 43 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3699} State at position 1 is {NULL=0, m_Protocol=1, NULL=3699, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68b79563=22, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3670a5aa=20, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14b59e4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@303f06d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11b95e84=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45983958=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c25e3ea=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2594ebd3=24, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@715c7e8f=19, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4232c8fb=21, NULL=0, NULL=0, P8=19, P6=15, P4=22, P2=18, this_buffer_empty=0, this_expect=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e7b8476=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210db937=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57271110=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65cc6c77=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54ecd6bd=0, m_recv_ack_1_2=7, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27d60c8c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bdecd40=0, m_msg_1_1=4, NULL=3700, \result=0, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29fefcfb=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70355751=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e12fd40=23, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45babda7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f71deb5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@477c66fe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45767715=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e362fe9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28dbd0e6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55b1ad99=0, NULL=3701, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e445ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@208b9818=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56b38dc3=0, NULL=0, P9=21, P7=24, NULL=3702, P5=20, P3=23, P1=17, m_msg_2=2, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ec7cc76=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25bc75b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@59cde4ea=0, q=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10c1421f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11613e83=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27c4a985=0, method_id=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d1b4472=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d1f87db=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2122f63c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17feac46=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L7] int m_Protocol = 1; [L8] int m_msg_2 = 2; [L9] int m_recv_ack_2 = 3; [L10] int m_msg_1_1 = 4; [L11] int m_msg_1_2 = 5; [L12] int m_recv_ack_1_1 = 6; [L13] int m_recv_ack_1_2 = 7; [L18] int q = 0; [L19] int method_id; [L22] int this_expect = 0; [L23] int this_buffer_empty = 0; Loop: [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L40] COND FALSE !(this_expect > 16) [L45] COND TRUE q == 0 [L46] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 19:28:11,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...