./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-regression/signextension-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector-regression/signextension-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98a78a067e915468866815d322f21e8dc3b4fc5df6fdcae5caef72989f625d40 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:54:27,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:54:27,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:54:27,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:54:27,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:54:27,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:54:27,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:54:27,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:54:27,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:54:27,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:54:27,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:54:27,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:54:27,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:54:27,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:54:27,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:54:27,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:54:27,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:54:27,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:54:27,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:54:27,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:54:27,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:54:27,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:54:27,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:54:27,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:54:27,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:54:27,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:54:27,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:54:27,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:54:27,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:54:27,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:54:27,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:54:27,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:54:27,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:54:27,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:54:27,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:54:27,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:54:27,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:54:27,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:54:27,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:54:27,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:54:27,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:54:27,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:54:27,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:54:27,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:54:27,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:54:27,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:54:27,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:54:27,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:54:27,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:54:27,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:54:27,791 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:54:27,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:54:27,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:54:27,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:54:27,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:54:27,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:54:27,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:54:27,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:54:27,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:54:27,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:54:27,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:54:27,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:54:27,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:54:27,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:54:27,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98a78a067e915468866815d322f21e8dc3b4fc5df6fdcae5caef72989f625d40 [2021-12-27 21:54:28,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:54:28,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:54:28,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:54:28,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:54:28,050 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:54:28,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-12-27 21:54:28,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9847506/34f9ae405a23415d9ba905906b39c011/FLAG6349a0b46 [2021-12-27 21:54:28,466 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:54:28,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-12-27 21:54:28,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9847506/34f9ae405a23415d9ba905906b39c011/FLAG6349a0b46 [2021-12-27 21:54:28,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9847506/34f9ae405a23415d9ba905906b39c011 [2021-12-27 21:54:28,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:54:28,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:54:28,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:54:28,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:54:28,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:54:28,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fe981a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28, skipping insertion in model container [2021-12-27 21:54:28,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:54:28,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:54:28,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-12-27 21:54:28,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:54:28,625 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:54:28,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-12-27 21:54:28,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:54:28,651 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:54:28,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28 WrapperNode [2021-12-27 21:54:28,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:54:28,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:54:28,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:54:28,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:54:28,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,704 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-12-27 21:54:28,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:54:28,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:54:28,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:54:28,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:54:28,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:54:28,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:54:28,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:54:28,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:54:28,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (1/1) ... [2021-12-27 21:54:28,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:54:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:54:28,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 21:54:28,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 21:54:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:54:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:54:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:54:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:54:28,834 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:54:28,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:54:28,897 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:54:28,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:54:28,900 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 21:54:28,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:54:28 BoogieIcfgContainer [2021-12-27 21:54:28,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:54:28,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:54:28,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:54:28,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:54:28,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:54:28" (1/3) ... [2021-12-27 21:54:28,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b4a9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:54:28, skipping insertion in model container [2021-12-27 21:54:28,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:54:28" (2/3) ... [2021-12-27 21:54:28,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b4a9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:54:28, skipping insertion in model container [2021-12-27 21:54:28,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:54:28" (3/3) ... [2021-12-27 21:54:28,908 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-1.c [2021-12-27 21:54:28,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:54:28,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:54:28,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:54:28,949 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:54:28,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:54:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-12-27 21:54:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-27 21:54:28,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:54:28,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-27 21:54:28,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:54:28,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:54:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-12-27 21:54:28,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:54:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928903631] [2021-12-27 21:54:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:54:28,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:54:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 21:54:29,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 21:54:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 21:54:29,113 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 21:54:29,115 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 21:54:29,115 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 21:54:29,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:54:29,120 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-27 21:54:29,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 21:54:29,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 09:54:29 BoogieIcfgContainer [2021-12-27 21:54:29,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 21:54:29,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 21:54:29,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 21:54:29,139 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 21:54:29,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:54:28" (3/4) ... [2021-12-27 21:54:29,141 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-27 21:54:29,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-27 21:54:29,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 21:54:29,172 INFO L158 Benchmark]: Toolchain (without parser) took 683.91ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.1MB in the beginning and 45.3MB in the end (delta: -8.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-12-27 21:54:29,173 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 21:54:29,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.07ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 27.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 21:54:29,174 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 58.7MB. Free memory was 27.3MB in the beginning and 41.7MB in the end (delta: -14.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-27 21:54:29,174 INFO L158 Benchmark]: Boogie Preprocessor took 15.29ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.7MB in the end (delta: 909.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 21:54:29,175 INFO L158 Benchmark]: RCFGBuilder took 179.67ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 32.8MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-27 21:54:29,176 INFO L158 Benchmark]: TraceAbstraction took 232.86ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.4MB in the beginning and 47.1MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 21:54:29,177 INFO L158 Benchmark]: Witness Printer took 30.17ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 21:54:29,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.07ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 27.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 58.7MB. Free memory was 27.3MB in the beginning and 41.7MB in the end (delta: -14.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.29ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.7MB in the end (delta: 909.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 179.67ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 32.8MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 232.86ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.4MB in the beginning and 47.1MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 30.17ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] unsigned short int allbits = -1; [L8] short int signedallbits = allbits; [L9] int unsignedtosigned = allbits; [L10] unsigned int unsignedtounsigned = allbits; [L11] int signedtosigned = signedallbits; [L12] unsigned int signedtounsigned = signedallbits; VAL [allbits=65535, signedallbits=-1, signedtosigned=-1, signedtounsigned=4294967295, unsignedtosigned=65535, unsignedtounsigned=65535] [L21-L22] COND TRUE unsignedtosigned == 65535 && unsignedtounsigned == 65535 && signedtosigned == -1 && signedtounsigned == 4294967295 VAL [allbits=65535, signedallbits=-1, signedtosigned=-1, signedtounsigned=4294967295, unsignedtosigned=65535, unsignedtounsigned=65535] [L27] reach_error() VAL [allbits=65535, signedallbits=-1, signedtosigned=-1, signedtounsigned=4294967295, unsignedtosigned=65535, unsignedtounsigned=65535] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-27 21:54:29,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE