./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/scull.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_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/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_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/scull.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/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_cda03772-3eea-42e6-9759-428e274a41a2/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 aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- 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 20:41:08,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:08,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:08,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:08,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:08,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:08,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:08,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:08,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:08,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:08,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:08,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:08,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:08,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:08,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:08,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:08,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:08,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:08,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:08,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:08,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:08,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:08,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:08,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:08,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:08,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:08,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:08,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:08,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:08,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:08,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:08,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:08,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:08,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:08,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:08,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:08,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:08,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:08,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:08,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:08,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:08,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:41:08,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:08,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:08,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:08,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:08,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:08,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:08,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:08,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:08,479 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:08,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:08,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:08,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:08,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:08,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:08,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:08,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:08,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:08,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:08,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:08,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:08,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:08,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:08,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:08,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:08,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:08,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:08,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:08,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:08,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:08,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:08,486 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:08,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:08,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:08,487 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_cda03772-3eea-42e6-9759-428e274a41a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2022-11-02 20:41:08,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:08,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:08,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:08,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:08,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:08,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-atomic/scull.i [2022-11-02 20:41:08,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/data/e0e4462e1/4e626d479c2448cb8aff256c039b2ef1/FLAGfe065710a [2022-11-02 20:41:09,415 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:09,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i [2022-11-02 20:41:09,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/data/e0e4462e1/4e626d479c2448cb8aff256c039b2ef1/FLAGfe065710a [2022-11-02 20:41:09,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/data/e0e4462e1/4e626d479c2448cb8aff256c039b2ef1 [2022-11-02 20:41:09,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:09,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:09,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:09,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:09,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:09,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad31eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09, skipping insertion in model container [2022-11-02 20:41:09,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:09,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:10,214 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-02 20:41:10,229 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-02 20:41:10,241 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-02 20:41:10,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:10,279 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:10,322 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-02 20:41:10,330 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-02 20:41:10,335 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_cda03772-3eea-42e6-9759-428e274a41a2/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-02 20:41:10,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:10,393 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:10,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10 WrapperNode [2022-11-02 20:41:10,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:10,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:10,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:10,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:10,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,486 INFO L138 Inliner]: procedures = 185, calls = 58, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 369 [2022-11-02 20:41:10,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:10,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:10,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:10,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:10,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:10,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:10,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:10,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:10,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (1/1) ... [2022-11-02 20:41:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:10,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:10,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:41:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:41:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:41:10,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:41:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:41:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2022-11-02 20:41:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2022-11-02 20:41:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:10,639 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 20:41:10,812 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:10,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:10,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: assume { :end_inline_scull_trim } true; [2022-11-02 20:41:10,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: assume -2147483648 <= scull_cleanup_module_#t~ret28#1 && scull_cleanup_module_#t~ret28#1 <= 2147483647; [2022-11-02 20:41:10,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: havoc scull_cleanup_module_#t~ret28#1; [2022-11-02 20:41:10,957 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret28#1 := scull_trim_#res#1; [2022-11-02 20:41:10,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: assume { :end_inline_scull_cleanup_module } true; [2022-11-02 20:41:10,959 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2022-11-02 20:41:11,572 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:11,586 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:11,586 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:41:11,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:11 BoogieIcfgContainer [2022-11-02 20:41:11,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:11,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:11,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:11,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:11,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:09" (1/3) ... [2022-11-02 20:41:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d30283a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:11, skipping insertion in model container [2022-11-02 20:41:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:10" (2/3) ... [2022-11-02 20:41:11,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d30283a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:11, skipping insertion in model container [2022-11-02 20:41:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:11" (3/3) ... [2022-11-02 20:41:11,600 INFO L112 eAbstractionObserver]: Analyzing ICFG scull.i [2022-11-02 20:41:11,613 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:41:11,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:11,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:41:11,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:41:11,808 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:41:11,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 420 transitions, 864 flow [2022-11-02 20:41:12,165 INFO L130 PetriNetUnfolder]: 16/417 cut-off events. [2022-11-02 20:41:12,166 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:41:12,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 417 events. 16/417 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 942 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 368. Up to 4 conditions per place. [2022-11-02 20:41:12,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 420 transitions, 864 flow [2022-11-02 20:41:12,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 405 transitions, 825 flow [2022-11-02 20:41:12,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:12,250 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;@76b6c595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:12,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-02 20:41:12,318 INFO L130 PetriNetUnfolder]: 1/212 cut-off events. [2022-11-02 20:41:12,319 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:41:12,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:12,320 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:12,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1431181784, now seen corresponding path program 1 times [2022-11-02 20:41:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:12,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36922439] [2022-11-02 20:41:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:12,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:12,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36922439] [2022-11-02 20:41:12,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36922439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:12,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:12,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515857297] [2022-11-02 20:41:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:12,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:12,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:13,070 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-11-02 20:41:13,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 405 transitions, 825 flow. Second operand has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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 20:41:13,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:13,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-11-02 20:41:13,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:14,230 INFO L130 PetriNetUnfolder]: 213/2878 cut-off events. [2022-11-02 20:41:14,231 INFO L131 PetriNetUnfolder]: For 224/230 co-relation queries the response was YES. [2022-11-02 20:41:14,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 2878 events. 213/2878 cut-off events. For 224/230 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 22328 event pairs, 57 based on Foata normal form. 52/2788 useless extension candidates. Maximal degree in co-relation 2984. Up to 192 conditions per place. [2022-11-02 20:41:14,279 INFO L137 encePairwiseOnDemand]: 408/420 looper letters, 25 selfloop transitions, 4 changer transitions 0/408 dead transitions. [2022-11-02 20:41:14,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 408 transitions, 898 flow [2022-11-02 20:41:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1218 transitions. [2022-11-02 20:41:14,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9666666666666667 [2022-11-02 20:41:14,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1218 transitions. [2022-11-02 20:41:14,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1218 transitions. [2022-11-02 20:41:14,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:14,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1218 transitions. [2022-11-02 20:41:14,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 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 20:41:14,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:14,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:14,334 INFO L175 Difference]: Start difference. First operand has 399 places, 405 transitions, 825 flow. Second operand 3 states and 1218 transitions. [2022-11-02 20:41:14,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 408 transitions, 898 flow [2022-11-02 20:41:14,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 408 transitions, 884 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:41:14,358 INFO L231 Difference]: Finished difference. Result has 394 places, 401 transitions, 840 flow [2022-11-02 20:41:14,360 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=840, PETRI_PLACES=394, PETRI_TRANSITIONS=401} [2022-11-02 20:41:14,366 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, -5 predicate places. [2022-11-02 20:41:14,366 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 401 transitions, 840 flow [2022-11-02 20:41:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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 20:41:14,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:14,368 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:14,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -395173290, now seen corresponding path program 1 times [2022-11-02 20:41:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613991403] [2022-11-02 20:41:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:14,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354953831] [2022-11-02 20:41:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:14,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:14,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:14,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:41:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:41:14,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:14,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613991403] [2022-11-02 20:41:14,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:14,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354953831] [2022-11-02 20:41:14,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354953831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:14,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:14,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079447813] [2022-11-02 20:41:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:14,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-11-02 20:41:14,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 401 transitions, 840 flow. Second operand has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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 20:41:14,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:14,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-11-02 20:41:14,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:15,974 INFO L130 PetriNetUnfolder]: 202/3045 cut-off events. [2022-11-02 20:41:15,974 INFO L131 PetriNetUnfolder]: For 266/315 co-relation queries the response was YES. [2022-11-02 20:41:16,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 3045 events. 202/3045 cut-off events. For 266/315 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 23495 event pairs, 30 based on Foata normal form. 22/2938 useless extension candidates. Maximal degree in co-relation 2450. Up to 181 conditions per place. [2022-11-02 20:41:16,032 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 22 selfloop transitions, 7 changer transitions 0/408 dead transitions. [2022-11-02 20:41:16,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 408 transitions, 924 flow [2022-11-02 20:41:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2022-11-02 20:41:16,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9595238095238096 [2022-11-02 20:41:16,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2022-11-02 20:41:16,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2022-11-02 20:41:16,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:16,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2022-11-02 20:41:16,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 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 20:41:16,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:16,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:16,047 INFO L175 Difference]: Start difference. First operand has 394 places, 401 transitions, 840 flow. Second operand 3 states and 1209 transitions. [2022-11-02 20:41:16,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 408 transitions, 924 flow [2022-11-02 20:41:16,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 408 transitions, 914 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:16,058 INFO L231 Difference]: Finished difference. Result has 396 places, 404 transitions, 884 flow [2022-11-02 20:41:16,059 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=884, PETRI_PLACES=396, PETRI_TRANSITIONS=404} [2022-11-02 20:41:16,060 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, -3 predicate places. [2022-11-02 20:41:16,061 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 404 transitions, 884 flow [2022-11-02 20:41:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.6666666666667) internal successors, (1184), 3 states have internal predecessors, (1184), 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 20:41:16,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:16,063 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:16,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:41:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:16,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1429011664, now seen corresponding path program 1 times [2022-11-02 20:41:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:16,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077913793] [2022-11-02 20:41:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:16,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:16,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625115349] [2022-11-02 20:41:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:16,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:16,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:41:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:16,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:41:16,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:16,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077913793] [2022-11-02 20:41:16,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625115349] [2022-11-02 20:41:16,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625115349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:16,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:16,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478603199] [2022-11-02 20:41:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:16,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:16,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:16,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:16,584 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 420 [2022-11-02 20:41:16,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 404 transitions, 884 flow. Second operand has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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 20:41:16,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:16,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 420 [2022-11-02 20:41:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:17,499 INFO L130 PetriNetUnfolder]: 156/2170 cut-off events. [2022-11-02 20:41:17,499 INFO L131 PetriNetUnfolder]: For 396/442 co-relation queries the response was YES. [2022-11-02 20:41:17,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 2170 events. 156/2170 cut-off events. For 396/442 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14626 event pairs, 45 based on Foata normal form. 19/2091 useless extension candidates. Maximal degree in co-relation 1698. Up to 154 conditions per place. [2022-11-02 20:41:17,541 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 23 selfloop transitions, 4 changer transitions 0/406 dead transitions. [2022-11-02 20:41:17,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 406 transitions, 940 flow [2022-11-02 20:41:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2022-11-02 20:41:17,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9563492063492064 [2022-11-02 20:41:17,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2022-11-02 20:41:17,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2022-11-02 20:41:17,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:17,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2022-11-02 20:41:17,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 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 20:41:17,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:17,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:17,556 INFO L175 Difference]: Start difference. First operand has 396 places, 404 transitions, 884 flow. Second operand 3 states and 1205 transitions. [2022-11-02 20:41:17,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 406 transitions, 940 flow [2022-11-02 20:41:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 406 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:41:17,569 INFO L231 Difference]: Finished difference. Result has 397 places, 403 transitions, 880 flow [2022-11-02 20:41:17,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=880, PETRI_PLACES=397, PETRI_TRANSITIONS=403} [2022-11-02 20:41:17,572 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, -2 predicate places. [2022-11-02 20:41:17,573 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 403 transitions, 880 flow [2022-11-02 20:41:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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 20:41:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:17,574 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:17,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:17,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:17,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1140159061, now seen corresponding path program 1 times [2022-11-02 20:41:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:17,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547846739] [2022-11-02 20:41:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:17,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:17,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547846739] [2022-11-02 20:41:17,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:41:17,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436623671] [2022-11-02 20:41:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:17,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:17,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:17,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:17,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:41:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:18,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:41:18,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:18,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:18,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436623671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:18,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:18,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:41:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344014633] [2022-11-02 20:41:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:41:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:41:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:41:18,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 420 [2022-11-02 20:41:18,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 403 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 397.25) internal successors, (1589), 4 states have internal predecessors, (1589), 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 20:41:18,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:18,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 420 [2022-11-02 20:41:18,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:19,094 INFO L130 PetriNetUnfolder]: 130/2829 cut-off events. [2022-11-02 20:41:19,095 INFO L131 PetriNetUnfolder]: For 150/174 co-relation queries the response was YES. [2022-11-02 20:41:19,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 2829 events. 130/2829 cut-off events. For 150/174 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 19282 event pairs, 12 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 2191. Up to 64 conditions per place. [2022-11-02 20:41:19,158 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 14 selfloop transitions, 5 changer transitions 0/403 dead transitions. [2022-11-02 20:41:19,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 403 transitions, 920 flow [2022-11-02 20:41:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:41:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:41:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1596 transitions. [2022-11-02 20:41:19,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.95 [2022-11-02 20:41:19,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1596 transitions. [2022-11-02 20:41:19,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1596 transitions. [2022-11-02 20:41:19,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:19,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1596 transitions. [2022-11-02 20:41:19,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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 20:41:19,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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 20:41:19,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 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 20:41:19,177 INFO L175 Difference]: Start difference. First operand has 397 places, 403 transitions, 880 flow. Second operand 4 states and 1596 transitions. [2022-11-02 20:41:19,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 403 transitions, 920 flow [2022-11-02 20:41:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 403 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:41:19,192 INFO L231 Difference]: Finished difference. Result has 397 places, 399 transitions, 874 flow [2022-11-02 20:41:19,193 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=874, PETRI_PLACES=397, PETRI_TRANSITIONS=399} [2022-11-02 20:41:19,195 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, -2 predicate places. [2022-11-02 20:41:19,195 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 399 transitions, 874 flow [2022-11-02 20:41:19,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 397.25) internal successors, (1589), 4 states have internal predecessors, (1589), 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 20:41:19,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:19,197 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:19,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:19,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:19,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1464378051, now seen corresponding path program 1 times [2022-11-02 20:41:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897840646] [2022-11-02 20:41:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:19,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:19,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900775878] [2022-11-02 20:41:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:19,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:19,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:19,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:19,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:41:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:19,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:41:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:20,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897840646] [2022-11-02 20:41:20,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:20,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900775878] [2022-11-02 20:41:20,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900775878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:20,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:20,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:41:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504218255] [2022-11-02 20:41:20,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:20,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:41:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:41:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:41:20,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 420 [2022-11-02 20:41:20,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 399 transitions, 874 flow. Second operand has 11 states, 11 states have (on average 379.8181818181818) internal successors, (4178), 11 states have internal predecessors, (4178), 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 20:41:20,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:20,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 420 [2022-11-02 20:41:20,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:23,227 INFO L130 PetriNetUnfolder]: 1007/8575 cut-off events. [2022-11-02 20:41:23,228 INFO L131 PetriNetUnfolder]: For 436/473 co-relation queries the response was YES. [2022-11-02 20:41:23,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10472 conditions, 8575 events. 1007/8575 cut-off events. For 436/473 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 92346 event pairs, 332 based on Foata normal form. 0/8122 useless extension candidates. Maximal degree in co-relation 10111. Up to 1168 conditions per place. [2022-11-02 20:41:23,682 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 65 selfloop transitions, 32 changer transitions 3/466 dead transitions. [2022-11-02 20:41:23,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 466 transitions, 1217 flow [2022-11-02 20:41:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:41:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:41:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5394 transitions. [2022-11-02 20:41:23,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9173469387755102 [2022-11-02 20:41:23,695 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5394 transitions. [2022-11-02 20:41:23,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5394 transitions. [2022-11-02 20:41:23,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:23,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5394 transitions. [2022-11-02 20:41:23,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 385.2857142857143) internal successors, (5394), 14 states have internal predecessors, (5394), 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 20:41:23,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 420.0) internal successors, (6300), 15 states have internal predecessors, (6300), 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 20:41:23,731 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 420.0) internal successors, (6300), 15 states have internal predecessors, (6300), 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 20:41:23,731 INFO L175 Difference]: Start difference. First operand has 397 places, 399 transitions, 874 flow. Second operand 14 states and 5394 transitions. [2022-11-02 20:41:23,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 466 transitions, 1217 flow [2022-11-02 20:41:23,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 466 transitions, 1207 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:41:23,747 INFO L231 Difference]: Finished difference. Result has 415 places, 436 transitions, 1076 flow [2022-11-02 20:41:23,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1076, PETRI_PLACES=415, PETRI_TRANSITIONS=436} [2022-11-02 20:41:23,751 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, 16 predicate places. [2022-11-02 20:41:23,751 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 436 transitions, 1076 flow [2022-11-02 20:41:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 379.8181818181818) internal successors, (4178), 11 states have internal predecessors, (4178), 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 20:41:23,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:23,753 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:23,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:23,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err1ASSERT_VIOLATIONERROR_FUNCTION, thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-02 20:41:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1700262482, now seen corresponding path program 1 times [2022-11-02 20:41:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939599379] [2022-11-02 20:41:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939599379] [2022-11-02 20:41:24,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-02 20:41:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344247546] [2022-11-02 20:41:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:24,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:24,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:41:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:24,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:41:24,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:24,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:41:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:24,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:24,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344247546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:24,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:24,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:24,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415025503] [2022-11-02 20:41:24,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:24,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:24,507 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 420 [2022-11-02 20:41:24,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 436 transitions, 1076 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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 20:41:24,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:24,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 420 [2022-11-02 20:41:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:25,681 INFO L130 PetriNetUnfolder]: 197/4070 cut-off events. [2022-11-02 20:41:25,681 INFO L131 PetriNetUnfolder]: For 170/173 co-relation queries the response was YES. [2022-11-02 20:41:25,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 4070 events. 197/4070 cut-off events. For 170/173 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 31528 event pairs, 28 based on Foata normal form. 37/3954 useless extension candidates. Maximal degree in co-relation 4124. Up to 111 conditions per place. [2022-11-02 20:41:25,720 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 0 selfloop transitions, 0 changer transitions 411/411 dead transitions. [2022-11-02 20:41:25,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 411 transitions, 1016 flow [2022-11-02 20:41:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2022-11-02 20:41:25,724 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2022-11-02 20:41:25,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2022-11-02 20:41:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2022-11-02 20:41:25,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2022-11-02 20:41:25,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 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 20:41:25,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:25,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 20:41:25,737 INFO L175 Difference]: Start difference. First operand has 415 places, 436 transitions, 1076 flow. Second operand 3 states and 1200 transitions. [2022-11-02 20:41:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 411 transitions, 1016 flow [2022-11-02 20:41:25,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 411 transitions, 994 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-02 20:41:25,754 INFO L231 Difference]: Finished difference. Result has 402 places, 0 transitions, 0 flow [2022-11-02 20:41:25,755 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=402, PETRI_TRANSITIONS=0} [2022-11-02 20:41:25,756 INFO L287 CegarLoopForPetriNet]: 399 programPoint places, 3 predicate places. [2022-11-02 20:41:25,756 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 0 transitions, 0 flow [2022-11-02 20:41:25,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 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 20:41:25,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2022-11-02 20:41:25,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2022-11-02 20:41:25,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2022-11-02 20:41:25,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2022-11-02 20:41:25,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2022-11-02 20:41:25,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2022-11-02 20:41:25,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2022-11-02 20:41:25,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2022-11-02 20:41:25,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2022-11-02 20:41:25,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2022-11-02 20:41:25,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2022-11-02 20:41:25,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:25,985 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-02 20:41:25,991 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:41:25,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:41:25,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:41:25 BasicIcfg [2022-11-02 20:41:25,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:41:25,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:41:25,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:41:25,998 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:41:25,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:11" (3/4) ... [2022-11-02 20:41:26,003 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:41:26,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure loader [2022-11-02 20:41:26,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:41:26,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:41:26,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-02 20:41:26,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:41:26,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:41:26,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:41:26,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:41:26,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:41:26,074 INFO L158 Benchmark]: Toolchain (without parser) took 16378.52ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 74.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 261.7MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,074 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory was 93.2MB in the beginning and 93.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:41:26,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 693.92ms. Allocated memory is still 113.2MB. Free memory was 74.2MB in the beginning and 75.7MB in the end (delta: -1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.72ms. Allocated memory is still 113.2MB. Free memory was 75.7MB in the beginning and 72.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,075 INFO L158 Benchmark]: Boogie Preprocessor took 46.67ms. Allocated memory is still 113.2MB. Free memory was 72.5MB in the beginning and 69.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,076 INFO L158 Benchmark]: RCFGBuilder took 1048.66ms. Allocated memory is still 113.2MB. Free memory was 69.9MB in the beginning and 85.3MB in the end (delta: -15.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,076 INFO L158 Benchmark]: TraceAbstraction took 14406.42ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 84.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 358.5MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,077 INFO L158 Benchmark]: Witness Printer took 75.03ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:26,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 113.2MB. Free memory was 93.2MB in the beginning and 93.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 693.92ms. Allocated memory is still 113.2MB. Free memory was 74.2MB in the beginning and 75.7MB in the end (delta: -1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.72ms. Allocated memory is still 113.2MB. Free memory was 75.7MB in the beginning and 72.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.67ms. Allocated memory is still 113.2MB. Free memory was 72.5MB in the beginning and 69.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1048.66ms. Allocated memory is still 113.2MB. Free memory was 69.9MB in the beginning and 85.3MB in the end (delta: -15.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14406.42ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 84.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 358.5MB. Max. memory is 16.1GB. * Witness Printer took 75.03ms. Allocated memory is still 1.5GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 736]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 771]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 736]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 804]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 744 locations, 11 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: 14.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 178 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 301 IncrementalHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 95 mSDtfsCounter, 301 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 833 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1076occurred in iteration=5, InterpolantAutomatonStates: 30, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1256 NumberOfCodeBlocks, 1256 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 908 ConstructedInterpolants, 0 QuantifiedInterpolants, 2092 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1891 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:41:26,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda03772-3eea-42e6-9759-428e274a41a2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE