./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem07_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-rers2012/Problem07_label37.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 3aa53faff32d3cefd7e292e9c760c2842331eee742cc346d26d4662e48b4b358 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 12:10:00,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 12:10:00,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 12:10:00,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 12:10:00,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 12:10:00,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 12:10:00,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 12:10:00,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 12:10:00,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 12:10:00,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 12:10:00,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 12:10:00,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 12:10:00,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 12:10:00,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 12:10:00,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 12:10:00,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 12:10:00,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 12:10:00,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 12:10:00,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 12:10:00,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 12:10:00,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 12:10:00,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 12:10:00,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 12:10:00,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 12:10:00,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 12:10:00,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 12:10:00,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 12:10:00,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 12:10:00,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 12:10:00,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 12:10:00,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 12:10:00,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 12:10:00,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 12:10:00,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 12:10:00,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 12:10:00,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 12:10:00,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 12:10:00,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 12:10:00,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 12:10:00,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 12:10:00,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 12:10:00,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 12:10:00,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 12:10:00,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 12:10:00,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 12:10:00,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 12:10:00,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 12:10:00,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 12:10:00,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 12:10:00,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 12:10:00,487 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 12:10:00,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 12:10:00,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 12:10:00,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 12:10:00,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 12:10:00,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 12:10:00,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 12:10:00,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 12:10:00,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 12:10:00,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 12:10:00,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 12:10:00,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 12:10:00,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 12:10:00,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 12:10:00,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aa53faff32d3cefd7e292e9c760c2842331eee742cc346d26d4662e48b4b358 [2021-12-14 12:10:00,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 12:10:00,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 12:10:00,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 12:10:00,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 12:10:00,671 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 12:10:00,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem07_label37.c [2021-12-14 12:10:00,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f886672a/e3d9d53c1e8c4759939f2eba5fe800b4/FLAG85abc511a [2021-12-14 12:10:02,239 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 12:10:02,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem07_label37.c [2021-12-14 12:10:02,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f886672a/e3d9d53c1e8c4759939f2eba5fe800b4/FLAG85abc511a [2021-12-14 12:10:02,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f886672a/e3d9d53c1e8c4759939f2eba5fe800b4 [2021-12-14 12:10:02,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 12:10:02,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 12:10:02,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 12:10:02,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 12:10:02,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 12:10:02,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:10:02" (1/1) ... [2021-12-14 12:10:02,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3a93c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:02, skipping insertion in model container [2021-12-14 12:10:02,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:10:02" (1/1) ... [2021-12-14 12:10:02,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 12:10:03,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 12:10:10,179 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-rers2012/Problem07_label37.c[2770691,2770704] [2021-12-14 12:10:10,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 12:10:10,239 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 12:10:14,261 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-rers2012/Problem07_label37.c[2770691,2770704] [2021-12-14 12:10:14,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 12:10:14,765 INFO L208 MainTranslator]: Completed translation [2021-12-14 12:10:14,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14 WrapperNode [2021-12-14 12:10:14,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 12:10:14,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 12:10:14,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 12:10:14,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 12:10:14,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:15,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:17,257 INFO L137 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773 [2021-12-14 12:10:17,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 12:10:17,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 12:10:17,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 12:10:17,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 12:10:17,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:17,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:17,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:17,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:18,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:18,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:18,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:19,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 12:10:19,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 12:10:19,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 12:10:19,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 12:10:19,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (1/1) ... [2021-12-14 12:10:19,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 12:10:19,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 12:10:19,117 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) [2021-12-14 12:10:19,127 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 [2021-12-14 12:10:19,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 12:10:19,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 12:10:19,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 12:10:19,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 12:10:19,241 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 12:10:19,242 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 12:10:45,371 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 12:10:45,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 12:10:45,414 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 12:10:45,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:10:45 BoogieIcfgContainer [2021-12-14 12:10:45,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 12:10:45,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 12:10:45,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 12:10:45,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 12:10:45,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:10:02" (1/3) ... [2021-12-14 12:10:45,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1772d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:10:45, skipping insertion in model container [2021-12-14 12:10:45,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:10:14" (2/3) ... [2021-12-14 12:10:45,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1772d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:10:45, skipping insertion in model container [2021-12-14 12:10:45,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:10:45" (3/3) ... [2021-12-14 12:10:45,430 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem07_label37.c [2021-12-14 12:10:45,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 12:10:45,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 12:10:45,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 12:10:45,484 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 [2021-12-14 12:10:45,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 12:10:45,749 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) [2021-12-14 12:10:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10110 [2021-12-14 12:10:46,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 12:10:46,431 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] [2021-12-14 12:10:46,432 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 12:10:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 12:10:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -371404679, now seen corresponding path program 1 times [2021-12-14 12:10:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 12:10:46,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830786324] [2021-12-14 12:10:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 12:10:46,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 12:10:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat