./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ --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 e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:51:45,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:51:45,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:51:45,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:51:45,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:51:45,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:51:45,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:51:45,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:51:45,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:51:45,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:51:45,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:51:45,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:51:45,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:51:45,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:51:45,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:51:45,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:51:45,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:51:45,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:51:45,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:51:45,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:51:45,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:51:45,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:51:45,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:51:45,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:51:45,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:51:45,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:51:45,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:51:45,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:51:45,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:51:45,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:51:45,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:51:45,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:51:45,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:51:45,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:51:45,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:51:45,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:51:45,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:51:45,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:51:45,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:51:45,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:51:45,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:51:45,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:51:45,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:51:45,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:51:45,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:51:45,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:51:45,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:51:45,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:51:45,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:51:45,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:51:45,484 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:51:45,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:51:45,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:51:45,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:51:45,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:51:45,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:51:45,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:51:45,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:51:45,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:51:45,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:51:45,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:51:45,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:51:45,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:51:45,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:51:45,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:51:45,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:51:45,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:51:45,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:51:45,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:51:45,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:51:45,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:51:45,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:51:45,489 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:51:45,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:51:45,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:51:45,489 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_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f [2022-10-17 10:51:45,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:51:45,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:51:45,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:51:45,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:51:45,853 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:51:45,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-10-17 10:51:45,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/data/f8dbda5b8/d568fc54400842b385add168197318b3/FLAG971de7059 [2022-10-17 10:51:46,557 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:51:46,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-10-17 10:51:46,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/data/f8dbda5b8/d568fc54400842b385add168197318b3/FLAG971de7059 [2022-10-17 10:51:46,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/data/f8dbda5b8/d568fc54400842b385add168197318b3 [2022-10-17 10:51:46,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:51:46,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:51:46,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:51:46,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:51:46,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:51:46,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:51:46" (1/1) ... [2022-10-17 10:51:46,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a10ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:46, skipping insertion in model container [2022-10-17 10:51:46,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:51:46" (1/1) ... [2022-10-17 10:51:46,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:51:46,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:51:47,171 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_1fc806d3-674d-45b7-9de9-131660b98ec1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-10-17 10:51:47,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:51:47,675 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:51:47,689 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_1fc806d3-674d-45b7-9de9-131660b98ec1/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-10-17 10:51:47,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:51:48,004 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:51:48,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48 WrapperNode [2022-10-17 10:51:48,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:51:48,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:51:48,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:51:48,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:51:48,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,311 INFO L138 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-10-17 10:51:48,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:51:48,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:51:48,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:51:48,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:51:48,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:51:48,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:51:48,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:51:48,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:51:48,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (1/1) ... [2022-10-17 10:51:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:51:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:51:48,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:51:48,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc806d3-674d-45b7-9de9-131660b98ec1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:51:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:51:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-10-17 10:51:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-10-17 10:51:48,771 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-10-17 10:51:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-10-17 10:51:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:51:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-10-17 10:51:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-10-17 10:51:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-10-17 10:51:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-10-17 10:51:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-10-17 10:51:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-10-17 10:51:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-10-17 10:51:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-10-17 10:51:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:51:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-10-17 10:51:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-10-17 10:51:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-10-17 10:51:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-10-17 10:51:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-17 10:51:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-10-17 10:51:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-17 10:51:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-10-17 10:51:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:51:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-17 10:51:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-10-17 10:51:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:51:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-10-17 10:51:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-10-17 10:51:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-10-17 10:51:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-10-17 10:51:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-10-17 10:51:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-10-17 10:51:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:51:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:51:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:51:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:51:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:51:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-10-17 10:51:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-10-17 10:51:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-10-17 10:51:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-10-17 10:51:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-10-17 10:51:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-10-17 10:51:49,388 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:51:49,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:51:58,965 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:51:58,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:51:58,995 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:51:59,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:51:59 BoogieIcfgContainer [2022-10-17 10:51:59,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:51:59,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:51:59,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:51:59,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:51:59,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:51:46" (1/3) ... [2022-10-17 10:51:59,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:51:59, skipping insertion in model container [2022-10-17 10:51:59,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:51:48" (2/3) ... [2022-10-17 10:51:59,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e74be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:51:59, skipping insertion in model container [2022-10-17 10:51:59,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:51:59" (3/3) ... [2022-10-17 10:51:59,014 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-1.c [2022-10-17 10:51:59,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:51:59,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:51:59,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:51:59,156 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25667aa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:51:59,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:51:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1146 states have (on average 1.2033158813263525) internal successors, (1379), 1151 states have internal predecessors, (1379), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2022-10-17 10:51:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2022-10-17 10:51:59,260 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:51:59,261 INFO L195 NwaCegarLoop]: trace histogram [209, 209, 209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:51:59,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:51:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:51:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash -112777684, now seen corresponding path program 1 times [2022-10-17 10:51:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:51:59,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165340906] [2022-10-17 10:51:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:51:59,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms