./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_accelerometer_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_accelerometer_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 f984bd5abbd4adc0ae4b2416fd7142c889297d5b ............................................................................................................................................................................................................................................................................................................................................................................................. 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 19:28:13,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 19:28:13,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 19:28:13,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 19:28:13,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 19:28:13,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 19:28:13,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 19:28:13,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 19:28:13,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 19:28:13,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 19:28:13,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 19:28:13,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 19:28:13,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 19:28:13,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 19:28:13,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 19:28:13,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 19:28:13,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 19:28:13,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 19:28:13,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 19:28:13,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 19:28:13,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 19:28:13,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 19:28:13,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 19:28:13,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 19:28:13,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 19:28:13,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 19:28:13,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 19:28:13,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 19:28:13,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 19:28:13,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 19:28:13,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 19:28:13,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 19:28:13,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 19:28:13,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 19:28:13,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 19:28:13,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 19:28:13,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 19:28:13,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 19:28:13,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 19:28:13,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 19:28:13,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 19:28:13,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 19:28:13,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 19:28:13,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 19:28:13,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 19:28:13,640 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 19:28:13,640 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 19:28:13,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 19:28:13,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 19:28:13,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 19:28:13,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 19:28:13,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 19:28:13,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 19:28:13,642 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 19:28:13,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 19:28:13,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 19:28:13,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 19:28:13,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 19:28:13,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 19:28:13,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 19:28:13,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 19:28:13,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 19:28:13,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f984bd5abbd4adc0ae4b2416fd7142c889297d5b [2021-07-06 19:28:13,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 19:28:13,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 19:28:13,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 19:28:13,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 19:28:13,965 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 19:28:13,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_accelerometer_1.c [2021-07-06 19:28:14,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6d3c551f/2bf209007fdd46798f5137ad997bb42c/FLAG41f04c8fb [2021-07-06 19:28:14,684 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 19:28:14,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_accelerometer_1.c [2021-07-06 19:28:14,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6d3c551f/2bf209007fdd46798f5137ad997bb42c/FLAG41f04c8fb [2021-07-06 19:28:15,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6d3c551f/2bf209007fdd46798f5137ad997bb42c [2021-07-06 19:28:15,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 19:28:15,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 19:28:15,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 19:28:15,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 19:28:15,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 19:28:15,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:15,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c6998d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15, skipping insertion in model container [2021-07-06 19:28:15,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:15,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 19:28:15,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 19:28:15,711 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_accelerometer_1.c[182833,182846] [2021-07-06 19:28:15,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:28:15,736 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 19:28:15,930 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_accelerometer_1.c[182833,182846] [2021-07-06 19:28:15,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:28:15,945 INFO L208 MainTranslator]: Completed translation [2021-07-06 19:28:15,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15 WrapperNode [2021-07-06 19:28:15,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 19:28:15,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 19:28:15,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 19:28:15,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 19:28:15,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:15,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 19:28:16,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 19:28:16,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 19:28:16,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 19:28:16,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 19:28:16,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 19:28:16,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 19:28:16,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 19:28:16,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (1/1) ... [2021-07-06 19:28:16,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:28:16,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:28:16,278 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 19:28:16,290 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 19:28:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 19:28:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 19:28:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 19:28:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 19:28:17,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 19:28:17,737 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-07-06 19:28:17,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:17 BoogieIcfgContainer [2021-07-06 19:28:17,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 19:28:17,739 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 19:28:17,739 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 19:28:17,742 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 19:28:17,742 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:17,743 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 07:28:15" (1/3) ... [2021-07-06 19:28:17,743 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74e0bc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:28:17, skipping insertion in model container [2021-07-06 19:28:17,744 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:17,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:28:15" (2/3) ... [2021-07-06 19:28:17,744 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74e0bc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:28:17, skipping insertion in model container [2021-07-06 19:28:17,744 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:28:17,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:17" (3/3) ... [2021-07-06 19:28:17,745 INFO L389 chiAutomizerObserver]: Analyzing ICFG psyco_accelerometer_1.c [2021-07-06 19:28:17,778 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 19:28:17,778 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 19:28:17,778 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 19:28:17,778 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 19:28:17,779 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 19:28:17,779 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 19:28:17,779 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 19:28:17,779 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 19:28:17,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 236 states, 235 states have (on average 1.974468085106383) internal successors, (464), 235 states have internal predecessors, (464), 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 19:28:17,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 220 [2021-07-06 19:28:17,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:17,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:17,827 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:28:17,827 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:28:17,827 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 19:28:17,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 236 states, 235 states have (on average 1.974468085106383) internal successors, (464), 235 states have internal predecessors, (464), 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 19:28:17,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 220 [2021-07-06 19:28:17,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:17,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:17,837 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 19:28:17,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 19:28:17,842 INFO L791 eck$LassoCheckResult]: Stem: 78#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(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_init~0 := 1;~m_disconnect~0 := 2;~m_getValueX~0 := 3;~m_getValueY~0 := 4;~m_Accelerometer~0 := 5;~m_update~0 := 6;~m_dataReceived~0 := 7;~m_connect_1~0 := 8;~m_connect_2~0 := 9; 9#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_#t~nondet47, main_#t~nondet48, main_#t~nondet49, main_#t~nondet50, main_#t~nondet51, main_#t~nondet52, main_#t~nondet53, main_#t~nondet54, main_#t~nondet55, main_#t~nondet56, main_#t~nondet57, main_#t~nondet58, main_#t~nondet59, main_#t~nondet60, main_#t~nondet61, main_#t~nondet62, main_#t~nondet63, main_#t~nondet64, main_#t~nondet65, main_#t~nondet66, main_#t~nondet67, main_#t~nondet68, main_#t~nondet69, main_#t~nondet70, main_#t~nondet71, main_#t~nondet72, main_#t~nondet73, main_#t~nondet74, main_#t~nondet75, main_#t~nondet76, main_#t~nondet77, main_#t~nondet78, main_#t~nondet79, main_#t~nondet80, main_#t~nondet81, main_#t~nondet82, main_#t~nondet83, main_#t~nondet84, main_#t~nondet85, main_#t~nondet86, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~q~0, main_~method_id~0, main_~this_m_conn~0, main_~this_m_sensitivity~0, main_~this_m_samples~0, main_~this_m_delta~0, main_~this_m_accX~0, main_~this_m_sensorInfo~0, main_~this_m_conn_data_listener~0, main_~this_m_accY~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_m_conn~0 := 0;main_~this_m_sensitivity~0 := 100;main_~this_m_samples~0 := 200;main_~this_m_delta~0 := 1;main_~this_m_accX~0 := 0;main_~this_m_sensorInfo~0 := 0;main_~this_m_conn_data_listener~0 := 0;main_~this_m_accY~0 := 0; 156#L34-2true [2021-07-06 19:28:17,843 INFO L793 eck$LassoCheckResult]: Loop: 156#L34-2true goto; 32#L1248true 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 := (if 0 == main_#t~nondet10 then 0 else 1);havoc main_#t~nondet10;main_~P5~0 := (if 0 == main_#t~nondet11 then 0 else 1);havoc main_#t~nondet11;main_~P6~0 := (if 0 == main_#t~nondet12 then 0 else 1);havoc main_#t~nondet12; 237#L46true assume !(0 == main_~q~0); 81#L66true assume !(1 == main_~q~0); 137#L150true assume !(2 == main_~q~0); 96#L330true assume !(3 == main_~q~0); 222#L1070true assume !(4 == main_~q~0); 156#L34-2true [2021-07-06 19:28:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-07-06 19:28:17,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:17,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540356958] [2021-07-06 19:28:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:17,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:17,929 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:17,944 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:17,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:17,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1173980384, now seen corresponding path program 1 times [2021-07-06 19:28:17,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:17,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177149714] [2021-07-06 19:28:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:17,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:17,974 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:17,980 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:17,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash 372316446, now seen corresponding path program 1 times [2021-07-06 19:28:17,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:17,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562772078] [2021-07-06 19:28:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:17,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:28:18,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:28:18,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 19:28:18,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:28:18,060 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 19:28:18,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 19:28:18,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562772078] [2021-07-06 19:28:18,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562772078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 19:28:18,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 19:28:18,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 19:28:18,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64545071] [2021-07-06 19:28:18,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-07-06 19:28:18,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 19:28:18,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 19:28:18,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 19:28:18,162 INFO L87 Difference]: Start difference. First operand has 236 states, 235 states have (on average 1.974468085106383) internal successors, (464), 235 states have internal predecessors, (464), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 19:28:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 19:28:18,336 INFO L93 Difference]: Finished difference Result 230 states and 407 transitions. [2021-07-06 19:28:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 19:28:18,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 230 states and 407 transitions. [2021-07-06 19:28:18,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 204 [2021-07-06 19:28:18,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 230 states to 207 states and 322 transitions. [2021-07-06 19:28:18,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-07-06 19:28:18,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-07-06 19:28:18,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 322 transitions. [2021-07-06 19:28:18,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:28:18,361 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 322 transitions. [2021-07-06 19:28:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 322 transitions. [2021-07-06 19:28:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-07-06 19:28:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 207 states have (on average 1.5555555555555556) internal successors, (322), 206 states have internal predecessors, (322), 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 19:28:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 322 transitions. [2021-07-06 19:28:18,402 INFO L704 BuchiCegarLoop]: Abstraction has 207 states and 322 transitions. [2021-07-06 19:28:18,403 INFO L587 BuchiCegarLoop]: Abstraction has 207 states and 322 transitions. [2021-07-06 19:28:18,403 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 19:28:18,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 322 transitions. [2021-07-06 19:28:18,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 204 [2021-07-06 19:28:18,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:28:18,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:28:18,405 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 19:28:18,405 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 19:28:18,405 INFO L791 eck$LassoCheckResult]: Stem: 588#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(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~m_init~0 := 1;~m_disconnect~0 := 2;~m_getValueX~0 := 3;~m_getValueY~0 := 4;~m_Accelerometer~0 := 5;~m_update~0 := 6;~m_dataReceived~0 := 7;~m_connect_1~0 := 8;~m_connect_2~0 := 9; 488#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_#t~nondet47, main_#t~nondet48, main_#t~nondet49, main_#t~nondet50, main_#t~nondet51, main_#t~nondet52, main_#t~nondet53, main_#t~nondet54, main_#t~nondet55, main_#t~nondet56, main_#t~nondet57, main_#t~nondet58, main_#t~nondet59, main_#t~nondet60, main_#t~nondet61, main_#t~nondet62, main_#t~nondet63, main_#t~nondet64, main_#t~nondet65, main_#t~nondet66, main_#t~nondet67, main_#t~nondet68, main_#t~nondet69, main_#t~nondet70, main_#t~nondet71, main_#t~nondet72, main_#t~nondet73, main_#t~nondet74, main_#t~nondet75, main_#t~nondet76, main_#t~nondet77, main_#t~nondet78, main_#t~nondet79, main_#t~nondet80, main_#t~nondet81, main_#t~nondet82, main_#t~nondet83, main_#t~nondet84, main_#t~nondet85, main_#t~nondet86, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~q~0, main_~method_id~0, main_~this_m_conn~0, main_~this_m_sensitivity~0, main_~this_m_samples~0, main_~this_m_delta~0, main_~this_m_accX~0, main_~this_m_sensorInfo~0, main_~this_m_conn_data_listener~0, main_~this_m_accY~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_m_conn~0 := 0;main_~this_m_sensitivity~0 := 100;main_~this_m_samples~0 := 200;main_~this_m_delta~0 := 1;main_~this_m_accX~0 := 0;main_~this_m_sensorInfo~0 := 0;main_~this_m_conn_data_listener~0 := 0;main_~this_m_accY~0 := 0; 489#L34-2 goto; 528#L1248 [2021-07-06 19:28:18,405 INFO L793 eck$LassoCheckResult]: Loop: 528#L1248 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 := (if 0 == main_#t~nondet10 then 0 else 1);havoc main_#t~nondet10;main_~P5~0 := (if 0 == main_#t~nondet11 then 0 else 1);havoc main_#t~nondet11;main_~P6~0 := (if 0 == main_#t~nondet12 then 0 else 1);havoc main_#t~nondet12; 529#L46 assume 0 == main_~q~0; 670#L47 assume !(0 != main_#t~nondet13);havoc main_#t~nondet13; 528#L1248 [2021-07-06 19:28:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-07-06 19:28:18,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:18,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594255171] [2021-07-06 19:28:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:18,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,438 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,446 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,450 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:18,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:18,451 INFO L82 PathProgramCache]: Analyzing trace with hash 40826, now seen corresponding path program 1 times [2021-07-06 19:28:18,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:18,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388380239] [2021-07-06 19:28:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:18,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,456 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,460 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:28:18,462 INFO L82 PathProgramCache]: Analyzing trace with hash 889540504, now seen corresponding path program 1 times [2021-07-06 19:28:18,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:28:18,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630801870] [2021-07-06 19:28:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:28:18,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:28:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,473 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:28:18,483 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:28:18,488 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:28:18,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-07-06 19:28:18,810 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2021-07-06 19:28:18,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:28:18,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-07-06 19:28:18,939 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-07-06 19:28:18,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 07:28:18 BoogieIcfgContainer [2021-07-06 19:28:18,972 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 19:28:18,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 19:28:18,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 19:28:18,973 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 19:28:18,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:28:17" (3/4) ... [2021-07-06 19:28:18,975 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 19:28:19,013 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 19:28:19,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 19:28:19,015 INFO L168 Benchmark]: Toolchain (without parser) took 3979.11 ms. Allocated memory was 60.8 MB in the beginning and 218.1 MB in the end (delta: 157.3 MB). Free memory was 30.4 MB in the beginning and 93.1 MB in the end (delta: -62.7 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,015 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:28:19,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 910.75 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 30.1 MB in the beginning and 35.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.81 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 35.9 MB in the beginning and 43.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,016 INFO L168 Benchmark]: Boogie Preprocessor took 146.02 ms. Allocated memory is still 94.4 MB. Free memory was 43.4 MB in the beginning and 40.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,016 INFO L168 Benchmark]: RCFGBuilder took 1483.57 ms. Allocated memory was 94.4 MB in the beginning and 218.1 MB in the end (delta: 123.7 MB). Free memory was 39.8 MB in the beginning and 155.5 MB in the end (delta: -115.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,017 INFO L168 Benchmark]: BuchiAutomizer took 1233.23 ms. Allocated memory is still 218.1 MB. Free memory was 155.5 MB in the beginning and 95.2 MB in the end (delta: 60.3 MB). Peak memory consumption was 80.2 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,017 INFO L168 Benchmark]: Witness Printer took 41.13 ms. Allocated memory is still 218.1 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 19:28:19,019 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 60.8 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 910.75 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 30.1 MB in the beginning and 35.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 158.81 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 35.9 MB in the beginning and 43.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 146.02 ms. Allocated memory is still 94.4 MB. Free memory was 43.4 MB in the beginning and 40.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1483.57 ms. Allocated memory was 94.4 MB in the beginning and 218.1 MB in the end (delta: 123.7 MB). Free memory was 39.8 MB in the beginning and 155.5 MB in the end (delta: -115.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1233.23 ms. Allocated memory is still 218.1 MB. Free memory was 155.5 MB in the beginning and 95.2 MB in the end (delta: 60.3 MB). Peak memory consumption was 80.2 MB. Max. memory is 16.1 GB. * Witness Printer took 41.13 ms. Allocated memory is still 218.1 MB. Free memory was 95.2 MB in the beginning and 93.1 MB in the end (delta: 2.1 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 207 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.1s. 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 30.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 207 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 403 SDtfs, 4 SDslu, 325 SDs, 0 SdLazy, 75 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.1ms 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: 34]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {m_getValueY=4, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5943a91e=19, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bba62fe=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5099e6e7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@203ad165=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e0a41bc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71f1b33b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32e5d346=21, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7060167f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@342f4a34=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cfa73dd=0, NULL=0, P4=1, this_m_sensitivity=100, this_m_samples=200, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@493bbee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@df7fcb7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@315fa81b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cfab2f1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e93e2a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48c0cd9d=0, m_update=6, this_m_accX=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66042871=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53d867ca=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@756f6e5e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ecf5d6c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@579a2b63=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56cf6d3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@94fa364=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19b973b0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@172af347=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23baf8f3=0, P5=0, P1=20, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ec0dd3c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18879878=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24bc2d75=0, q=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@487fb2c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31c2ea6d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c6afe29=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58a83ab2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30e935a6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14093f9b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@519b6fea=0, this_m_sensorInfo=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37a00bf9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32d29a01=0, this_m_accY=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19654c36=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@108d33c5=0, m_connect_1=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41bd4421=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@558b8d42=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27c50dee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1618985=0, m_Accelerometer=5, this_m_conn=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32567163=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b3c7ff7=0, NULL=0, P6=1, P2=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@319588c2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37d26ca0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55eadee7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74b83aa5=0, NULL=0, m_init=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@451c9df2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2174907c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69767f68=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d65a98a=0, this_m_delta=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4efb4b27=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b233d4f=0, NULL=2, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e8b13c7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c93d303=20, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1930aad=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62a40c61=22, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@af4423d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8009b46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f9aeaf7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e5b3ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@edf8f7a=0, m_connect_2=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15c2f68b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64907dac=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78a2a60c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2aa8ec05=0, NULL=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26fe98bd=0, NULL=0, NULL=4, m_disconnect=2, P3=22, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@600e95b5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6916210e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6982bd9d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d47d1f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4419a103=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@493935a4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48659889=0, this_m_conn_data_listener=0, method_id=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19705ed4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@413612a5=0, m_getValueX=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3da4214b=0, m_dataReceived=7} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 34]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L7] int m_init = 1; [L8] int m_disconnect = 2; [L9] int m_getValueX = 3; [L10] int m_getValueY = 4; [L11] int m_Accelerometer = 5; [L12] int m_update = 6; [L13] int m_dataReceived = 7; [L14] int m_connect_1 = 8; [L15] int m_connect_2 = 9; [L20] int q = 0; [L21] int method_id; [L24] int this_m_conn = 0; [L25] int this_m_sensitivity = 100; [L26] int this_m_samples = 200; [L27] int this_m_delta = 1; [L28] int this_m_accX = 0; [L29] int this_m_sensorInfo = 0; [L30] int this_m_conn_data_listener = 0; [L31] int this_m_accY = 0; Loop: [L34] COND TRUE 1 [L37] int P1=__VERIFIER_nondet_int(); [L38] int P2=__VERIFIER_nondet_int(); [L39] int P3=__VERIFIER_nondet_int(); [L40] _Bool P4=__VERIFIER_nondet_int(); [L41] _Bool P5=__VERIFIER_nondet_int(); [L42] _Bool P6=__VERIFIER_nondet_int(); [L46] COND TRUE q == 0 [L47] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 19:28:19,060 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...