./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc --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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- 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-5e519f3 [2022-11-02 19:49:16,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:49:16,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:49:16,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:49:16,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:49:16,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:49:16,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:49:16,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:49:16,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:49:16,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:49:16,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:49:16,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:49:16,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:49:16,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:49:16,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:49:16,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:49:16,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:49:16,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:49:16,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:49:16,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:49:16,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:49:16,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:49:16,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:49:16,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:49:16,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:49:16,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:49:16,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:49:16,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:49:16,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:49:16,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:49:16,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:49:16,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:49:16,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:49:16,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:49:16,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:49:16,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:49:16,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:49:16,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:49:16,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:49:16,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:49:16,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:49:16,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:49:16,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:49:16,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:49:16,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:49:16,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:49:16,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:49:16,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:49:16,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:49:16,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:49:16,594 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:49:16,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:49:16,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:49:16,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:49:16,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:49:16,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:49:16,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:49:16,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:49:16,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:49:16,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:49:16,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:49:16,598 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:49:16,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:49:16,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:49:16,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:49:16,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:49:16,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:49:16,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:49:16,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:49:16,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:49:16,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:49:16,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:49:16,600 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:49:16,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:49:16,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:49:16,601 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_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-11-02 19:49:16,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:49:16,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:49:16,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:49:16,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:49:16,958 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:49:16,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-02 19:49:17,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/data/b63601870/06bab2c3572c45fca9fc1afbf3d4896b/FLAG21e4865ad [2022-11-02 19:49:17,825 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:49:17,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-02 19:49:17,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/data/b63601870/06bab2c3572c45fca9fc1afbf3d4896b/FLAG21e4865ad [2022-11-02 19:49:18,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/data/b63601870/06bab2c3572c45fca9fc1afbf3d4896b [2022-11-02 19:49:18,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:49:18,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:49:18,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:49:18,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:49:18,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:49:18,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:49:18" (1/1) ... [2022-11-02 19:49:18,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e4dbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:18, skipping insertion in model container [2022-11-02 19:49:18,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:49:18" (1/1) ... [2022-11-02 19:49:18,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:49:18,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:49:18,818 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_46ec8c30-8246-4fc0-9622-b2551624b527/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-02 19:49:18,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:49:18,985 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:49:19,044 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_46ec8c30-8246-4fc0-9622-b2551624b527/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-02 19:49:19,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:49:19,160 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:49:19,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19 WrapperNode [2022-11-02 19:49:19,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:49:19,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:49:19,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:49:19,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:49:19,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,260 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 227 [2022-11-02 19:49:19,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:49:19,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:49:19,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:49:19,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:49:19,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:49:19,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:49:19,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:49:19,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:49:19,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (1/1) ... [2022-11-02 19:49:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:49:19,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:19,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:49:19,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:49:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:49:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:49:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-02 19:49:19,447 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-02 19:49:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:49:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:49:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-02 19:49:19,450 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-02 19:49:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:49:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 19:49:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:49:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:49:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:49:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:49:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:49:19,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:49:19,454 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 19:49:19,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:49:19,721 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:49:20,265 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:49:20,276 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:49:20,276 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-02 19:49:20,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:49:20 BoogieIcfgContainer [2022-11-02 19:49:20,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:49:20,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:49:20,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:49:20,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:49:20,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:49:18" (1/3) ... [2022-11-02 19:49:20,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107871d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:49:20, skipping insertion in model container [2022-11-02 19:49:20,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:49:19" (2/3) ... [2022-11-02 19:49:20,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107871d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:49:20, skipping insertion in model container [2022-11-02 19:49:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:49:20" (3/3) ... [2022-11-02 19:49:20,289 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-11-02 19:49:20,299 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:49:20,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:49:20,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:49:20,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:49:20,415 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 19:49:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 241 transitions, 504 flow [2022-11-02 19:49:20,658 INFO L130 PetriNetUnfolder]: 54/446 cut-off events. [2022-11-02 19:49:20,658 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-02 19:49:20,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 446 events. 54/446 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1754 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 229. Up to 8 conditions per place. [2022-11-02 19:49:20,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 241 transitions, 504 flow [2022-11-02 19:49:20,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 239 transitions, 494 flow [2022-11-02 19:49:20,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:49:20,715 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;@43ddca02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:49:20,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 19:49:20,751 INFO L130 PetriNetUnfolder]: 10/128 cut-off events. [2022-11-02 19:49:20,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 19:49:20,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:20,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 19:49:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1972175826, now seen corresponding path program 1 times [2022-11-02 19:49:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:20,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335133906] [2022-11-02 19:49:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:21,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335133906] [2022-11-02 19:49:21,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335133906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:21,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:21,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:49:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595302886] [2022-11-02 19:49:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:21,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:49:21,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:49:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:49:21,277 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 241 [2022-11-02 19:49:21,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 239 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-02 19:49:21,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:21,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 241 [2022-11-02 19:49:21,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:21,448 INFO L130 PetriNetUnfolder]: 11/408 cut-off events. [2022-11-02 19:49:21,449 INFO L131 PetriNetUnfolder]: For 19/29 co-relation queries the response was YES. [2022-11-02 19:49:21,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 408 events. 11/408 cut-off events. For 19/29 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1452 event pairs, 0 based on Foata normal form. 49/432 useless extension candidates. Maximal degree in co-relation 225. Up to 16 conditions per place. [2022-11-02 19:49:21,455 INFO L137 encePairwiseOnDemand]: 221/241 looper letters, 15 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2022-11-02 19:49:21,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 226 transitions, 502 flow [2022-11-02 19:49:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:49:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 19:49:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-11-02 19:49:21,471 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.91701244813278 [2022-11-02 19:49:21,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-11-02 19:49:21,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-11-02 19:49:21,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:21,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-11-02 19:49:21,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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) [2022-11-02 19:49:21,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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) [2022-11-02 19:49:21,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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) [2022-11-02 19:49:21,497 INFO L175 Difference]: Start difference. First operand has 221 places, 239 transitions, 494 flow. Second operand 3 states and 663 transitions. [2022-11-02 19:49:21,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 226 transitions, 502 flow [2022-11-02 19:49:21,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 226 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 19:49:21,514 INFO L231 Difference]: Finished difference. Result has 223 places, 222 transitions, 470 flow [2022-11-02 19:49:21,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=223, PETRI_TRANSITIONS=222} [2022-11-02 19:49:21,521 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 2 predicate places. [2022-11-02 19:49:21,521 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 222 transitions, 470 flow [2022-11-02 19:49:21,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-02 19:49:21,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:21,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:21,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:49:21,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 19:49:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -56279307, now seen corresponding path program 1 times [2022-11-02 19:49:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:21,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040225821] [2022-11-02 19:49:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:21,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:21,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040225821] [2022-11-02 19:49:21,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040225821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662599139] [2022-11-02 19:49:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:21,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:21,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:21,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:49:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:22,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:49:22,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:49:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:22,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:49:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:22,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662599139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:49:22,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:49:22,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 19:49:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160631040] [2022-11-02 19:49:22,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:49:22,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:49:22,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:49:22,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:49:22,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 241 [2022-11-02 19:49:22,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 222 transitions, 470 flow. Second operand has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 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) [2022-11-02 19:49:22,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:22,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 241 [2022-11-02 19:49:22,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:22,537 INFO L130 PetriNetUnfolder]: 11/426 cut-off events. [2022-11-02 19:49:22,537 INFO L131 PetriNetUnfolder]: For 20/30 co-relation queries the response was YES. [2022-11-02 19:49:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 426 events. 11/426 cut-off events. For 20/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1378 event pairs, 0 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 416. Up to 12 conditions per place. [2022-11-02 19:49:22,542 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 17 selfloop transitions, 9 changer transitions 0/234 dead transitions. [2022-11-02 19:49:22,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 234 transitions, 548 flow [2022-11-02 19:49:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:49:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 19:49:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1900 transitions. [2022-11-02 19:49:22,550 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875979714153988 [2022-11-02 19:49:22,550 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1900 transitions. [2022-11-02 19:49:22,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1900 transitions. [2022-11-02 19:49:22,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:22,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1900 transitions. [2022-11-02 19:49:22,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 211.11111111111111) internal successors, (1900), 9 states have internal predecessors, (1900), 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) [2022-11-02 19:49:22,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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) [2022-11-02 19:49:22,567 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 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) [2022-11-02 19:49:22,567 INFO L175 Difference]: Start difference. First operand has 223 places, 222 transitions, 470 flow. Second operand 9 states and 1900 transitions. [2022-11-02 19:49:22,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 234 transitions, 548 flow [2022-11-02 19:49:22,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 234 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 19:49:22,580 INFO L231 Difference]: Finished difference. Result has 233 places, 228 transitions, 518 flow [2022-11-02 19:49:22,581 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=518, PETRI_PLACES=233, PETRI_TRANSITIONS=228} [2022-11-02 19:49:22,581 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 12 predicate places. [2022-11-02 19:49:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 228 transitions, 518 flow [2022-11-02 19:49:22,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 210.4) internal successors, (2104), 10 states have internal predecessors, (2104), 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) [2022-11-02 19:49:22,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:22,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:22,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 19:49:22,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:22,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 19:49:22,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1794391237, now seen corresponding path program 2 times [2022-11-02 19:49:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:22,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845219397] [2022-11-02 19:49:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:23,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:23,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845219397] [2022-11-02 19:49:23,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845219397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:23,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109609637] [2022-11-02 19:49:23,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:49:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:23,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:23,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:49:23,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:49:23,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:49:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:49:23,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:49:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:23,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:49:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:23,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109609637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:49:23,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:49:23,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 19:49:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804675157] [2022-11-02 19:49:23,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:49:23,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:49:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:23,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:49:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:49:23,784 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 241 [2022-11-02 19:49:23,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 228 transitions, 518 flow. Second operand has 18 states, 18 states have (on average 210.66666666666666) internal successors, (3792), 18 states have internal predecessors, (3792), 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) [2022-11-02 19:49:23,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:23,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 241 [2022-11-02 19:49:23,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:24,219 INFO L130 PetriNetUnfolder]: 11/490 cut-off events. [2022-11-02 19:49:24,219 INFO L131 PetriNetUnfolder]: For 40/50 co-relation queries the response was YES. [2022-11-02 19:49:24,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 490 events. 11/490 cut-off events. For 40/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1379 event pairs, 0 based on Foata normal form. 4/470 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2022-11-02 19:49:24,226 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 29 selfloop transitions, 21 changer transitions 0/258 dead transitions. [2022-11-02 19:49:24,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 258 transitions, 738 flow [2022-11-02 19:49:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 19:49:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 19:49:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4422 transitions. [2022-11-02 19:49:24,239 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8737403675163011 [2022-11-02 19:49:24,240 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4422 transitions. [2022-11-02 19:49:24,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4422 transitions. [2022-11-02 19:49:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:24,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4422 transitions. [2022-11-02 19:49:24,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 210.57142857142858) internal successors, (4422), 21 states have internal predecessors, (4422), 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) [2022-11-02 19:49:24,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 241.0) internal successors, (5302), 22 states have internal predecessors, (5302), 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) [2022-11-02 19:49:24,274 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 241.0) internal successors, (5302), 22 states have internal predecessors, (5302), 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) [2022-11-02 19:49:24,274 INFO L175 Difference]: Start difference. First operand has 233 places, 228 transitions, 518 flow. Second operand 21 states and 4422 transitions. [2022-11-02 19:49:24,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 258 transitions, 738 flow [2022-11-02 19:49:24,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 258 transitions, 724 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 19:49:24,283 INFO L231 Difference]: Finished difference. Result has 257 places, 241 transitions, 642 flow [2022-11-02 19:49:24,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=642, PETRI_PLACES=257, PETRI_TRANSITIONS=241} [2022-11-02 19:49:24,287 INFO L287 CegarLoopForPetriNet]: 221 programPoint places, 36 predicate places. [2022-11-02 19:49:24,287 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 241 transitions, 642 flow [2022-11-02 19:49:24,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 210.66666666666666) internal successors, (3792), 18 states have internal predecessors, (3792), 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) [2022-11-02 19:49:24,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:24,289 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:24,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:49:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:24,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 19:49:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 536937415, now seen corresponding path program 3 times [2022-11-02 19:49:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621998766] [2022-11-02 19:49:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 19:49:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:25,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621998766] [2022-11-02 19:49:25,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621998766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:25,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763891444] [2022-11-02 19:49:25,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:49:25,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:25,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:25,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:25,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ec8c30-8246-4fc0-9622-b2551624b527/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process