./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a --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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- 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-b5237d8 [2022-11-21 17:23:10,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:23:10,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:23:10,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:23:10,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:23:10,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:23:10,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:23:10,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:23:10,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:23:10,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:23:10,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:23:10,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:23:10,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:23:10,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:23:10,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:23:10,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:23:10,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:23:10,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:23:10,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:23:10,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:23:10,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:23:10,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:23:10,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:23:10,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:23:10,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:23:10,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:23:10,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:23:10,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:23:10,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:23:10,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:23:10,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:23:10,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:23:10,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:23:10,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:23:10,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:23:10,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:23:10,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:23:10,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:23:10,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:23:10,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:23:10,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:23:10,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:23:10,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:23:10,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:23:10,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:23:10,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:23:10,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:23:10,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:23:10,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:23:10,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:23:10,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:23:10,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:23:10,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:23:10,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:23:10,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:23:10,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:23:10,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:23:10,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:23:10,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:23:10,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:23:10,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:23:10,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:23:10,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:23:10,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:23:10,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:23:10,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:23:10,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:10,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:23:10,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:23:10,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:23:10,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:23:10,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:23:10,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:23:10,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:23:10,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:23:10,627 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_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2022-11-21 17:23:11,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:23:11,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:23:11,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:23:11,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:23:11,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:23:11,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-21 17:23:14,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:23:14,586 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:23:14,586 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2022-11-21 17:23:14,599 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/data/8c2658106/ae3facca2b0e44cd97bd284f0639284d/FLAG52f733f4b [2022-11-21 17:23:14,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/data/8c2658106/ae3facca2b0e44cd97bd284f0639284d [2022-11-21 17:23:14,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:23:14,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:23:14,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:14,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:23:14,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:23:14,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:14" (1/1) ... [2022-11-21 17:23:14,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a95da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:14, skipping insertion in model container [2022-11-21 17:23:14,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:14" (1/1) ... [2022-11-21 17:23:14,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:23:14,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:23:15,111 WARN L237 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_81c47c1f-4c84-4297-9c50-b9be2d40166a/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-21 17:23:15,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:15,154 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:23:15,210 WARN L237 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_81c47c1f-4c84-4297-9c50-b9be2d40166a/sv-benchmarks/c/pthread-lit/qw2004-2b.i[30003,30016] [2022-11-21 17:23:15,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:15,263 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:23:15,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15 WrapperNode [2022-11-21 17:23:15,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:15,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:15,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:23:15,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:23:15,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,334 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2022-11-21 17:23:15,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:15,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:23:15,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:23:15,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:23:15,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:23:15,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:23:15,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:23:15,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:23:15,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (1/1) ... [2022-11-21 17:23:15,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:15,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:23:15,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:23:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2022-11-21 17:23:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2022-11-21 17:23:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:23:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:23:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:23:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:23:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:23:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:23:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:23:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:23:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:23:15,464 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:23:15,627 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:23:15,630 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:23:15,914 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:23:15,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:23:15,943 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 17:23:15,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:15 BoogieIcfgContainer [2022-11-21 17:23:15,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:23:15,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:23:15,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:23:15,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:23:15,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:23:14" (1/3) ... [2022-11-21 17:23:15,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d785feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:15, skipping insertion in model container [2022-11-21 17:23:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:15" (2/3) ... [2022-11-21 17:23:15,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d785feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:15, skipping insertion in model container [2022-11-21 17:23:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:15" (3/3) ... [2022-11-21 17:23:15,958 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2022-11-21 17:23:15,968 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:23:15,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:23:15,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:23:15,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:23:16,038 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 17:23:16,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 245 flow [2022-11-21 17:23:16,141 INFO L130 PetriNetUnfolder]: 6/119 cut-off events. [2022-11-21 17:23:16,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:23:16,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 119 events. 6/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-11-21 17:23:16,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 245 flow [2022-11-21 17:23:16,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 241 flow [2022-11-21 17:23:16,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:23:16,174 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;@67814cd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:23:16,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 17:23:16,254 INFO L130 PetriNetUnfolder]: 4/96 cut-off events. [2022-11-21 17:23:16,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:23:16,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:16,256 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:16,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 182298429, now seen corresponding path program 1 times [2022-11-21 17:23:16,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:16,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037691186] [2022-11-21 17:23:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:16,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:16,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037691186] [2022-11-21 17:23:16,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037691186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:16,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:16,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:23:16,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174310851] [2022-11-21 17:23:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:16,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:23:16,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:23:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:23:16,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 120 [2022-11-21 17:23:16,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:16,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:23:16,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 120 [2022-11-21 17:23:16,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:23:16,984 INFO L130 PetriNetUnfolder]: 24/369 cut-off events. [2022-11-21 17:23:16,985 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:23:16,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 369 events. 24/369 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1619 event pairs, 3 based on Foata normal form. 11/354 useless extension candidates. Maximal degree in co-relation 375. Up to 16 conditions per place. [2022-11-21 17:23:16,991 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 13 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-21 17:23:16,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 287 flow [2022-11-21 17:23:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:23:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2022-11-21 17:23:17,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-21 17:23:17,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2022-11-21 17:23:17,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2022-11-21 17:23:17,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:23:17,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2022-11-21 17:23:17,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,032 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 241 flow. Second operand 5 states and 560 transitions. [2022-11-21 17:23:17,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 287 flow [2022-11-21 17:23:17,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 124 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:23:17,041 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 268 flow [2022-11-21 17:23:17,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2022-11-21 17:23:17,048 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-11-21 17:23:17,049 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 268 flow [2022-11-21 17:23:17,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:17,050 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:17,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:23:17,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash 694172434, now seen corresponding path program 1 times [2022-11-21 17:23:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:17,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699218000] [2022-11-21 17:23:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699218000] [2022-11-21 17:23:17,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699218000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:17,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:17,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:23:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900248960] [2022-11-21 17:23:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:23:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:23:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:23:17,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2022-11-21 17:23:17,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:23:17,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2022-11-21 17:23:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:23:17,688 INFO L130 PetriNetUnfolder]: 53/616 cut-off events. [2022-11-21 17:23:17,689 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 17:23:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 616 events. 53/616 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3572 event pairs, 4 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 717. Up to 24 conditions per place. [2022-11-21 17:23:17,705 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 21 selfloop transitions, 10 changer transitions 2/139 dead transitions. [2022-11-21 17:23:17,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 374 flow [2022-11-21 17:23:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:23:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:23:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1075 transitions. [2022-11-21 17:23:17,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2022-11-21 17:23:17,712 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1075 transitions. [2022-11-21 17:23:17,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1075 transitions. [2022-11-21 17:23:17,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:23:17,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1075 transitions. [2022-11-21 17:23:17,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.5) internal successors, (1075), 10 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,723 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,724 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 268 flow. Second operand 10 states and 1075 transitions. [2022-11-21 17:23:17,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 374 flow [2022-11-21 17:23:17,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 139 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:23:17,733 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 325 flow [2022-11-21 17:23:17,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=325, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2022-11-21 17:23:17,734 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-11-21 17:23:17,735 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 325 flow [2022-11-21 17:23:17,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:17,736 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:23:17,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 791898828, now seen corresponding path program 1 times [2022-11-21 17:23:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923799373] [2022-11-21 17:23:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:17,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923799373] [2022-11-21 17:23:17,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923799373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:17,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:17,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:23:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897754372] [2022-11-21 17:23:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:17,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:23:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:23:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:23:17,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 120 [2022-11-21 17:23:17,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:17,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:23:17,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 120 [2022-11-21 17:23:17,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:23:18,357 INFO L130 PetriNetUnfolder]: 148/1279 cut-off events. [2022-11-21 17:23:18,359 INFO L131 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2022-11-21 17:23:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1279 events. 148/1279 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10552 event pairs, 30 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 1606. Up to 141 conditions per place. [2022-11-21 17:23:18,364 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 8 selfloop transitions, 2 changer transitions 61/148 dead transitions. [2022-11-21 17:23:18,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 148 transitions, 435 flow [2022-11-21 17:23:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:23:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:23:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1076 transitions. [2022-11-21 17:23:18,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8966666666666666 [2022-11-21 17:23:18,368 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1076 transitions. [2022-11-21 17:23:18,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1076 transitions. [2022-11-21 17:23:18,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:23:18,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1076 transitions. [2022-11-21 17:23:18,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.6) internal successors, (1076), 10 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,377 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 325 flow. Second operand 10 states and 1076 transitions. [2022-11-21 17:23:18,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 148 transitions, 435 flow [2022-11-21 17:23:18,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 435 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:23:18,382 INFO L231 Difference]: Finished difference. Result has 151 places, 87 transitions, 242 flow [2022-11-21 17:23:18,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=151, PETRI_TRANSITIONS=87} [2022-11-21 17:23:18,383 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2022-11-21 17:23:18,384 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 87 transitions, 242 flow [2022-11-21 17:23:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:18,385 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:23:18,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2023260719, now seen corresponding path program 1 times [2022-11-21 17:23:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:18,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391713565] [2022-11-21 17:23:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:18,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391713565] [2022-11-21 17:23:18,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391713565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:18,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:18,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:23:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932451845] [2022-11-21 17:23:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:18,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:23:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:23:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:18,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 120 [2022-11-21 17:23:18,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 87 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:23:18,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 120 [2022-11-21 17:23:18,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:23:18,592 INFO L130 PetriNetUnfolder]: 21/172 cut-off events. [2022-11-21 17:23:18,592 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 17:23:18,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 172 events. 21/172 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 583 event pairs, 9 based on Foata normal form. 2/170 useless extension candidates. Maximal degree in co-relation 277. Up to 44 conditions per place. [2022-11-21 17:23:18,593 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 11 selfloop transitions, 0 changer transitions 9/95 dead transitions. [2022-11-21 17:23:18,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 95 transitions, 298 flow [2022-11-21 17:23:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:23:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 17:23:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 639 transitions. [2022-11-21 17:23:18,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-11-21 17:23:18,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 639 transitions. [2022-11-21 17:23:18,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 639 transitions. [2022-11-21 17:23:18,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:23:18,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 639 transitions. [2022-11-21 17:23:18,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,602 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,603 INFO L175 Difference]: Start difference. First operand has 151 places, 87 transitions, 242 flow. Second operand 6 states and 639 transitions. [2022-11-21 17:23:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 95 transitions, 298 flow [2022-11-21 17:23:18,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 264 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-11-21 17:23:18,613 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 214 flow [2022-11-21 17:23:18,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2022-11-21 17:23:18,615 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -13 predicate places. [2022-11-21 17:23:18,616 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 214 flow [2022-11-21 17:23:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:18,619 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:23:18,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1958656625, now seen corresponding path program 1 times [2022-11-21 17:23:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:18,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204742511] [2022-11-21 17:23:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204742511] [2022-11-21 17:23:18,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204742511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:18,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:18,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:23:18,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557132855] [2022-11-21 17:23:18,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:18,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:23:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:23:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:23:18,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-21 17:23:18,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:18,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:23:18,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-21 17:23:18,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:23:19,087 INFO L130 PetriNetUnfolder]: 30/215 cut-off events. [2022-11-21 17:23:19,088 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-21 17:23:19,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 215 events. 30/215 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 712 event pairs, 1 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 359. Up to 12 conditions per place. [2022-11-21 17:23:19,089 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 16 selfloop transitions, 5 changer transitions 23/110 dead transitions. [2022-11-21 17:23:19,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 380 flow [2022-11-21 17:23:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:23:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 17:23:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1212 transitions. [2022-11-21 17:23:19,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2022-11-21 17:23:19,094 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1212 transitions. [2022-11-21 17:23:19,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1212 transitions. [2022-11-21 17:23:19,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:23:19,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1212 transitions. [2022-11-21 17:23:19,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:19,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:19,102 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 120.0) internal successors, (1560), 13 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:19,102 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 214 flow. Second operand 12 states and 1212 transitions. [2022-11-21 17:23:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 380 flow [2022-11-21 17:23:19,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 110 transitions, 370 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-21 17:23:19,106 INFO L231 Difference]: Finished difference. Result has 106 places, 82 transitions, 193 flow [2022-11-21 17:23:19,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2022-11-21 17:23:19,111 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -11 predicate places. [2022-11-21 17:23:19,111 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 193 flow [2022-11-21 17:23:19,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:19,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:23:19,112 INFO L209 CegarLoopForPetriNet]: 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] [2022-11-21 17:23:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:23:19,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 17:23:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1207648661, now seen corresponding path program 2 times [2022-11-21 17:23:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:19,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722656264] [2022-11-21 17:23:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:23:19,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:23:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:23:19,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:23:19,211 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:23:19,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-21 17:23:19,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-21 17:23:19,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:23:19,215 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-21 17:23:19,223 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 17:23:19,223 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:23:19,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:23:19 BasicIcfg [2022-11-21 17:23:19,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:23:19,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:23:19,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:23:19,318 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:23:19,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:15" (3/4) ... [2022-11-21 17:23:19,321 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 17:23:19,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:23:19,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:23:19,418 INFO L158 Benchmark]: Toolchain (without parser) took 4798.88ms. Allocated memory was 195.0MB in the beginning and 306.2MB in the end (delta: 111.1MB). Free memory was 145.8MB in the beginning and 109.0MB in the end (delta: 36.8MB). Peak memory consumption was 149.7MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,418 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 195.0MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:23:19,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.04ms. Allocated memory is still 195.0MB. Free memory was 145.6MB in the beginning and 126.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.92ms. Allocated memory is still 195.0MB. Free memory was 125.8MB in the beginning and 123.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,420 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 195.0MB. Free memory was 123.8MB in the beginning and 122.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:23:19,420 INFO L158 Benchmark]: RCFGBuilder took 583.28ms. Allocated memory is still 195.0MB. Free memory was 122.3MB in the beginning and 106.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,421 INFO L158 Benchmark]: TraceAbstraction took 3367.37ms. Allocated memory was 195.0MB in the beginning and 306.2MB in the end (delta: 111.1MB). Free memory was 105.7MB in the beginning and 118.4MB in the end (delta: -12.7MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,422 INFO L158 Benchmark]: Witness Printer took 99.04ms. Allocated memory is still 306.2MB. Free memory was 118.4MB in the beginning and 109.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:23:19,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 195.0MB. Free memory is still 166.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.04ms. Allocated memory is still 195.0MB. Free memory was 145.6MB in the beginning and 126.0MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.92ms. Allocated memory is still 195.0MB. Free memory was 125.8MB in the beginning and 123.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 195.0MB. Free memory was 123.8MB in the beginning and 122.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 583.28ms. Allocated memory is still 195.0MB. Free memory was 122.3MB in the beginning and 106.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3367.37ms. Allocated memory was 195.0MB in the beginning and 306.2MB in the end (delta: 111.1MB). Free memory was 105.7MB in the beginning and 118.4MB in the end (delta: -12.7MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. * Witness Printer took 99.04ms. Allocated memory is still 306.2MB. Free memory was 118.4MB in the beginning and 109.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L756] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L757] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L758] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L759] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L760] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 VAL [arg={0:0}, arg={0:0}, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() VAL [dec()=0, pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) VAL [\old(cond)=1, cond=1, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 VAL [arg={0:0}, arg={0:0}, lse=1, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 VAL [lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L715] 0 return 0; VAL [\result=0, lp=0, lsf=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [arg={0:0}, arg={0:0}, BCSP_IoIncrement()=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L736] COND TRUE 0 status == 0 VAL [arg={0:0}, arg={0:0}, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L737] 0 int local_assertion = !stopped; VAL [arg={0:0}, arg={0:0}, local_assertion=0, pendingIo=1, status=0, stopped=1, stoppingEvent=1, stoppingFlag=1] [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 53 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=2, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-21 17:23:19,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81c47c1f-4c84-4297-9c50-b9be2d40166a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE