./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF --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 78258e8e1e0a9153dcadc40b279c1b949f89012dbb716c6b1987705528a7bf55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:16:08,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:16:08,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:16:08,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:16:08,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:16:08,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:16:08,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:16:08,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:16:08,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:16:08,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:16:08,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:16:08,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:16:08,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:16:08,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:16:08,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:16:08,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:16:08,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:16:08,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:16:08,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:16:08,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:16:08,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:16:08,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:16:08,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:16:08,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:16:08,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:16:08,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:16:08,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:16:08,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:16:08,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:16:08,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:16:08,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:16:08,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:16:08,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:16:08,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:16:08,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:16:08,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:16:08,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:16:08,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:16:08,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:16:08,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:16:08,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:16:08,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:16:08,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:16:08,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:16:08,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:16:08,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:16:08,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:16:08,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:16:08,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:16:08,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:16:08,623 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:16:08,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:16:08,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:16:08,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:16:08,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:16:08,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:16:08,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:16:08,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:16:08,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:16:08,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:16:08,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:16:08,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:16:08,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:16:08,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:16:08,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:16:08,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:16:08,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:08,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:16:08,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:16:08,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:16:08,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:16:08,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:16:08,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:16:08,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:16:08,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:16:08,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:16:08,630 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78258e8e1e0a9153dcadc40b279c1b949f89012dbb716c6b1987705528a7bf55 [2021-11-20 07:16:08,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:16:08,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:16:08,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:16:08,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:16:08,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:16:08,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c [2021-11-20 07:16:09,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/data/c8b9a746b/b82bf5895b9a4c49a5166eb28ae82fa2/FLAG5990a5eec [2021-11-20 07:16:09,938 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:16:09,939 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c [2021-11-20 07:16:09,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/data/c8b9a746b/b82bf5895b9a4c49a5166eb28ae82fa2/FLAG5990a5eec [2021-11-20 07:16:10,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/data/c8b9a746b/b82bf5895b9a4c49a5166eb28ae82fa2 [2021-11-20 07:16:10,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:16:10,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:16:10,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:10,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:16:10,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:16:10,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:10" (1/1) ... [2021-11-20 07:16:10,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b290a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:10, skipping insertion in model container [2021-11-20 07:16:10,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:10" (1/1) ... [2021-11-20 07:16:10,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:16:10,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:16:10,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c[2267,2280] [2021-11-20 07:16:12,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:12,356 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:16:12,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-2.c[2267,2280] [2021-11-20 07:16:13,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:13,416 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:16:13,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13 WrapperNode [2021-11-20 07:16:13,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:13,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:16:13,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:16:13,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:16:13,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:13,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:15,026 INFO L137 Inliner]: procedures = 101, calls = 11881, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 39268 [2021-11-20 07:16:15,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:16:15,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:16:15,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:16:15,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:16:15,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:15,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:15,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:15,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:16,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:16,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:16,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:16,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:16:16,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:16:16,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:16:16,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:16:16,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (1/1) ... [2021-11-20 07:16:16,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:16,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:16:16,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11b3d36-0732-4d63-9105-003a6394d165/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:16:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2021-11-20 07:16:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2021-11-20 07:16:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2021-11-20 07:16:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2021-11-20 07:16:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:16:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2021-11-20 07:16:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2021-11-20 07:16:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2021-11-20 07:16:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2021-11-20 07:16:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2021-11-20 07:16:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2021-11-20 07:16:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2021-11-20 07:16:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2021-11-20 07:16:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2021-11-20 07:16:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2021-11-20 07:16:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2021-11-20 07:16:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2021-11-20 07:16:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2021-11-20 07:16:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2021-11-20 07:16:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:16:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-11-20 07:16:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-11-20 07:16:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2021-11-20 07:16:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2021-11-20 07:16:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2021-11-20 07:16:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2021-11-20 07:16:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2021-11-20 07:16:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2021-11-20 07:16:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2021-11-20 07:16:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2021-11-20 07:16:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2021-11-20 07:16:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2021-11-20 07:16:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2021-11-20 07:16:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2021-11-20 07:16:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:16:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2021-11-20 07:16:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2021-11-20 07:16:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2021-11-20 07:16:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2021-11-20 07:16:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2021-11-20 07:16:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2021-11-20 07:16:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2021-11-20 07:16:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2021-11-20 07:16:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2021-11-20 07:16:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2021-11-20 07:16:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2021-11-20 07:16:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2021-11-20 07:16:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2021-11-20 07:16:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2021-11-20 07:16:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2021-11-20 07:16:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2021-11-20 07:16:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2021-11-20 07:16:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2021-11-20 07:16:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2021-11-20 07:16:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2021-11-20 07:16:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2021-11-20 07:16:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2021-11-20 07:16:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2021-11-20 07:16:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2021-11-20 07:16:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2021-11-20 07:16:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2021-11-20 07:16:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-20 07:16:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2021-11-20 07:16:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2021-11-20 07:16:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2021-11-20 07:16:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2021-11-20 07:16:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2021-11-20 07:16:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2021-11-20 07:16:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2021-11-20 07:16:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2021-11-20 07:16:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2021-11-20 07:16:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2021-11-20 07:16:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2021-11-20 07:16:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2021-11-20 07:16:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2021-11-20 07:16:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2021-11-20 07:16:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2021-11-20 07:16:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2021-11-20 07:16:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2021-11-20 07:16:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2021-11-20 07:16:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2021-11-20 07:16:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2021-11-20 07:16:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2021-11-20 07:16:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2021-11-20 07:16:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2021-11-20 07:16:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2021-11-20 07:16:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2021-11-20 07:16:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:16:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2021-11-20 07:16:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2021-11-20 07:16:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:16:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:16:18,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:16:18,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:20:00,416 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:20:00,472 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:20:00,473 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 07:20:00,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:20:00 BoogieIcfgContainer [2021-11-20 07:20:00,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:20:00,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:20:00,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:20:00,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:20:00,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:16:10" (1/3) ... [2021-11-20 07:20:00,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c7a80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:20:00, skipping insertion in model container [2021-11-20 07:20:00,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:13" (2/3) ... [2021-11-20 07:20:00,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c7a80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:20:00, skipping insertion in model container [2021-11-20 07:20:00,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:20:00" (3/3) ... [2021-11-20 07:20:00,490 INFO L111 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.3-2.c [2021-11-20 07:20:00,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:20:00,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:20:00,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:20:00,584 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 [2021-11-20 07:20:00,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:20:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8032 states have (on average 1.5709661354581674) internal successors, (12618), 8056 states have internal predecessors, (12618), 370 states have call successors, (370), 43 states have call predecessors, (370), 43 states have return successors, (370), 360 states have call predecessors, (370), 370 states have call successors, (370) [2021-11-20 07:20:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3346 [2021-11-20 07:20:01,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:01,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:01,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash -391326380, now seen corresponding path program 1 times [2021-11-20 07:20:01,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:01,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086311645] [2021-11-20 07:20:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:01,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:20:06,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:06,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086311645] [2021-11-20 07:20:06,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086311645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:20:06,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:20:06,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:20:06,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065632200] [2021-11-20 07:20:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:20:06,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:20:06,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:20:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:20:06,293 INFO L87 Difference]: Start difference. First operand has 8447 states, 8032 states have (on average 1.5709661354581674) internal successors, (12618), 8056 states have internal predecessors, (12618), 370 states have call successors, (370), 43 states have call predecessors, (370), 43 states have return successors, (370), 360 states have call predecessors, (370), 370 states have call successors, (370) Second operand has 2 states, 2 states have (on average 1672.0) internal successors, (3344), 2 states have internal predecessors, (3344), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:20:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:06,681 INFO L93 Difference]: Finished difference Result 16885 states and 27028 transitions. [2021-11-20 07:20:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:20:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1672.0) internal successors, (3344), 2 states have internal predecessors, (3344), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3345 [2021-11-20 07:20:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:06,763 INFO L225 Difference]: With dead ends: 16885 [2021-11-20 07:20:06,763 INFO L226 Difference]: Without dead ends: 8431 [2021-11-20 07:20:06,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:20:06,827 INFO L933 BasicCegarLoop]: 10411 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10411 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:06,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10411 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:20:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2021-11-20 07:20:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8431. [2021-11-20 07:20:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8431 states, 8017 states have (on average 1.2048147686166895) internal successors, (9659), 8041 states have internal predecessors, (9659), 370 states have call successors, (370), 43 states have call predecessors, (370), 43 states have return successors, (369), 359 states have call predecessors, (369), 369 states have call successors, (369) [2021-11-20 07:20:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 10398 transitions. [2021-11-20 07:20:07,355 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 10398 transitions. Word has length 3345 [2021-11-20 07:20:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:07,358 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 10398 transitions. [2021-11-20 07:20:07,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1672.0) internal successors, (3344), 2 states have internal predecessors, (3344), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:20:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 10398 transitions. [2021-11-20 07:20:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3346 [2021-11-20 07:20:07,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:07,726 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] [2021-11-20 07:20:07,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:20:07,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1041356270, now seen corresponding path program 1 times [2021-11-20 07:20:07,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642763633] [2021-11-20 07:20:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:07,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms