./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-programs/Problem103_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/eca-programs/Problem103_label53.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 6b2698af1c56681d8affa5c32e6cf4e8581c6b7fdca179882c2fae5f98897b54 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:47:53,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:47:53,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:47:53,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:47:53,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:47:53,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:47:53,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:47:53,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:47:53,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:47:53,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:47:53,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:47:53,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:47:53,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:47:53,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:47:53,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:47:53,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:47:53,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:47:53,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:47:53,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:47:53,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:47:53,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:47:53,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:47:53,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:47:53,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:47:53,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:47:53,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:47:53,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:47:53,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:47:53,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:47:53,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:47:53,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:47:53,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:47:53,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:47:53,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:47:53,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:47:53,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:47:53,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:47:53,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:47:53,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:47:53,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:47:53,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:47:53,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 05:47:53,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:47:53,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:47:53,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:47:53,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:47:53,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:47:53,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:47:53,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:47:53,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:47:53,752 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:47:53,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:47:53,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:47:53,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 05:47:53,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:47:53,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:47:53,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:47:53,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:47:53,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:47:53,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:47:53,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:47:53,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:47:53,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:47:53,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:47:53,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:47:53,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:47:53,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:47:53,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:47:53,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:47:53,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:47:53,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 05:47:53,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 05:47:53,758 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:47:53,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:47:53,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:47:53,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:47:53,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b2698af1c56681d8affa5c32e6cf4e8581c6b7fdca179882c2fae5f98897b54 [2021-12-17 05:47:54,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:47:54,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:47:54,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:47:54,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:47:54,025 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:47:54,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-programs/Problem103_label53.c [2021-12-17 05:47:54,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeaf6f95/ac97f7f6c4ca4976b1ae4cb0778a9285/FLAG762b76a92 [2021-12-17 05:47:56,741 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:47:56,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-programs/Problem103_label53.c [2021-12-17 05:47:56,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeaf6f95/ac97f7f6c4ca4976b1ae4cb0778a9285/FLAG762b76a92 [2021-12-17 05:47:57,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeaf6f95/ac97f7f6c4ca4976b1ae4cb0778a9285 [2021-12-17 05:47:57,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:47:57,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:47:57,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:47:57,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:47:57,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:47:57,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:47:57" (1/1) ... [2021-12-17 05:47:57,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2685550c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:47:57, skipping insertion in model container [2021-12-17 05:47:57,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:47:57" (1/1) ... [2021-12-17 05:47:57,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:47:58,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:48:16,189 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/eca-programs/Problem103_label53.c[6303606,6303619] [2021-12-17 05:48:16,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:48:16,298 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:48:25,264 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/eca-programs/Problem103_label53.c[6303606,6303619] [2021-12-17 05:48:25,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:48:28,438 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:48:28,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28 WrapperNode [2021-12-17 05:48:28,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:48:28,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:48:28,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:48:28,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:48:28,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:29,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:33,697 INFO L137 Inliner]: procedures = 88, calls = 82, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 197824 [2021-12-17 05:48:33,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:48:33,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:48:33,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:48:33,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:48:33,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:33,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:34,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:34,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:36,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:37,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:37,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:38,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:48:38,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:48:38,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:48:38,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:48:38,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (1/1) ... [2021-12-17 05:48:38,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:48:38,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:48:38,623 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) [2021-12-17 05:48:38,627 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 [2021-12-17 05:48:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:48:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 05:48:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:48:38,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:48:38,812 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:48:38,814 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:49:38,817 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:49:38,906 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:49:38,906 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 05:49:38,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:38 BoogieIcfgContainer [2021-12-17 05:49:38,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:49:38,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:49:38,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:49:38,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:49:38,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:47:57" (1/3) ... [2021-12-17 05:49:38,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575bbb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:38, skipping insertion in model container [2021-12-17 05:49:38,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:48:28" (2/3) ... [2021-12-17 05:49:38,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575bbb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:38, skipping insertion in model container [2021-12-17 05:49:38,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:38" (3/3) ... [2021-12-17 05:49:38,936 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem103_label53.c [2021-12-17 05:49:38,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:49:38,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:49:39,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:49:39,034 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 [2021-12-17 05:49:39,035 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:49:39,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 20356 states, 20354 states have (on average 1.902525302151911) internal successors, (38724), 20355 states have internal predecessors, (38724), 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) [2021-12-17 05:49:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16488 [2021-12-17 05:49:40,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:49:40,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:49:40,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:49:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:49:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1316071171, now seen corresponding path program 1 times [2021-12-17 05:49:40,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:49:40,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964128619] [2021-12-17 05:49:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:49:40,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:49:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat