./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48e151e171192faba98bea76b0a05f258efede2f42bdf4a8243efed731650338 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:15:52,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:15:52,385 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-02 23:15:52,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 23:15:52,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 23:15:52,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:15:52,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:15:52,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:15:52,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:15:52,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:15:52,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:15:52,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:15:52,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 23:15:52,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 23:15:52,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 23:15:52,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:15:52,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:15:52,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:15:52,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:15:52,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 23:15:52,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:15:52,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:15:52,420 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:15:52,421 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:15:52,421 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:15:52,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:15:52,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:15:52,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:15:52,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:15:52,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:15:52,423 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 23:15:52,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 23:15:52,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:15:52,425 INFO L153 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_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e151e171192faba98bea76b0a05f258efede2f42bdf4a8243efed731650338 [2023-12-02 23:15:52,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:15:52,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:15:52,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:15:52,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:15:52,659 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:15:52,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/eca-rers2012/Problem18_label31.c [2023-12-02 23:15:55,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:15:55,794 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:15:55,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/sv-benchmarks/c/eca-rers2012/Problem18_label31.c [2023-12-02 23:15:55,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/data/38d0bce3f/0efe7a73b4534b8fb94d4cb8f048f4c0/FLAG00dc88174 [2023-12-02 23:15:55,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/data/38d0bce3f/0efe7a73b4534b8fb94d4cb8f048f4c0 [2023-12-02 23:15:55,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:15:55,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:15:55,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:15:55,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:15:55,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:15:55,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:15:55" (1/1) ... [2023-12-02 23:15:55,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec4ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:55, skipping insertion in model container [2023-12-02 23:15:55,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:15:55" (1/1) ... [2023-12-02 23:15:55,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:15:56,166 WARN L240 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_909b5226-c11a-42b7-b668-51de92dc7c2f/sv-benchmarks/c/eca-rers2012/Problem18_label31.c[1896,1909] [2023-12-02 23:15:56,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:15:56,852 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:15:56,867 WARN L240 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_909b5226-c11a-42b7-b668-51de92dc7c2f/sv-benchmarks/c/eca-rers2012/Problem18_label31.c[1896,1909] [2023-12-02 23:15:57,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:15:57,286 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:15:57,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57 WrapperNode [2023-12-02 23:15:57,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:15:57,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:15:57,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:15:57,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:15:57,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,520 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4133 [2023-12-02 23:15:57,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:15:57,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:15:57,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:15:57,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:15:57,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:15:57,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:15:57,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:15:57,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:15:57,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:15:57" (1/1) ... [2023-12-02 23:15:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:15:57,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:15:57,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:15:57,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909b5226-c11a-42b7-b668-51de92dc7c2f/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:15:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:15:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 23:15:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:15:57,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:15:57,947 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:15:57,950 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:16:01,514 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:17:13,109 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:17:13,109 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 23:17:13,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:17:13 BoogieIcfgContainer [2023-12-02 23:17:13,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:17:13,112 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:17:13,112 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:17:13,119 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:17:13,119 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:17:13" (1/1) ... [2023-12-02 23:17:13,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:17:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:17:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-12-02 23:17:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-12-02 23:17:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 23:17:13,172 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:17:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:17:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:17:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:17:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:17:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2023-12-02 23:17:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-02 23:17:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 23:17:13,983 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:17:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:17:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat