./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-programs/Problem101_label08.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/Problem101_label08.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 757b5a20d940c6b808111a308c888fc5fe2211cac603e5645744a05abf73e005 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:08:30,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:08:30,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:08:30,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:08:30,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:08:30,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:08:30,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:08:30,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:08:30,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:08:30,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:08:30,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:08:30,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:08:30,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:08:30,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:08:30,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:08:30,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:08:30,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:08:30,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:08:30,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:08:30,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:08:30,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:08:30,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:08:30,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:08:30,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:08:30,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:08:30,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:08:30,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:08:30,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:08:30,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:08:30,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:08:30,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:08:30,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:08:30,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:08:30,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:08:30,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:08:30,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:08:30,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:08:30,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:08:30,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:08:30,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:08:30,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:08:30,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:08:30,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:08:30,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:08:30,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:08:30,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:08:31,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:08:31,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:08:31,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:08:31,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:08:31,001 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:08:31,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:08:31,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:08:31,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:08:31,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:08:31,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:08:31,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:08:31,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:08:31,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:08:31,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:08:31,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:08:31,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:08:31,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:08:31,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:08:31,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:08:31,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:08:31,005 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:08:31,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:08:31,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:08:31,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 757b5a20d940c6b808111a308c888fc5fe2211cac603e5645744a05abf73e005 [2022-02-20 16:08:31,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:08:31,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:08:31,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:08:31,223 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:08:31,224 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:08:31,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-programs/Problem101_label08.c [2022-02-20 16:08:31,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd040e24/cbde580c40894fb29d36255c59afd1c6/FLAG4794184d2 [2022-02-20 16:08:32,818 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:08:32,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-programs/Problem101_label08.c [2022-02-20 16:08:32,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd040e24/cbde580c40894fb29d36255c59afd1c6/FLAG4794184d2 [2022-02-20 16:08:33,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd040e24/cbde580c40894fb29d36255c59afd1c6 [2022-02-20 16:08:33,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:08:33,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:08:33,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:08:33,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:08:33,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:08:33,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:08:33" (1/1) ... [2022-02-20 16:08:33,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f12f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:33, skipping insertion in model container [2022-02-20 16:08:33,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:08:33" (1/1) ... [2022-02-20 16:08:33,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:08:33,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:08:40,724 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/Problem101_label08.c[2767137,2767150] [2022-02-20 16:08:40,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:08:40,776 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:08:44,917 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/Problem101_label08.c[2767137,2767150] [2022-02-20 16:08:44,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:08:45,667 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:08:45,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45 WrapperNode [2022-02-20 16:08:45,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:08:45,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:08:45,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:08:45,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:08:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:46,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:47,897 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83780 [2022-02-20 16:08:47,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:08:47,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:08:47,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:08:47,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:08:47,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:47,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:48,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:48,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:49,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:49,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:49,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:50,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:08:50,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:08:50,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:08:50,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:08:50,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (1/1) ... [2022-02-20 16:08:50,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:08:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:08:50,345 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) [2022-02-20 16:08:50,350 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 [2022-02-20 16:08:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:08:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:08:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:08:50,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:08:50,460 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:08:50,461 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:09:18,075 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:09:18,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:09:18,113 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 16:09:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:09:18 BoogieIcfgContainer [2022-02-20 16:09:18,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:09:18,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:09:18,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:09:18,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:09:18,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:08:33" (1/3) ... [2022-02-20 16:09:18,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f48e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:09:18, skipping insertion in model container [2022-02-20 16:09:18,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:08:45" (2/3) ... [2022-02-20 16:09:18,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f48e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:09:18, skipping insertion in model container [2022-02-20 16:09:18,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:09:18" (3/3) ... [2022-02-20 16:09:18,126 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem101_label08.c [2022-02-20 16:09:18,129 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:09:18,129 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:09:18,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:09:18,192 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 [2022-02-20 16:09:18,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:09:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 10257 states, 10255 states have (on average 1.9892735251097027) internal successors, (20400), 10256 states have internal predecessors, (20400), 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) [2022-02-20 16:09:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10091 [2022-02-20 16:09:19,189 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:09:19,193 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] [2022-02-20 16:09:19,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:09:19,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:09:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash -986135798, now seen corresponding path program 1 times [2022-02-20 16:09:19,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:09:19,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026568653] [2022-02-20 16:09:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:09:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:09:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat