./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R --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 a0efdc82161997cbf03fd7c104a0f7adcc3337af1f91e29fd2b7831e9d52958e --- 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-38b53e6 [2022-11-25 15:28:48,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:28:48,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:28:48,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:28:48,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:28:48,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:28:48,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:28:48,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:28:48,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:28:48,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:28:48,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:28:48,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:28:48,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:28:48,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:28:48,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:28:48,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:28:48,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:28:48,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:28:48,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:28:48,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:28:48,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:28:48,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:28:48,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:28:48,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:28:48,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:28:48,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:28:48,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:28:48,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:28:48,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:28:48,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:28:48,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:28:48,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:28:48,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:28:48,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:28:48,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:28:48,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:28:48,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:28:48,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:28:48,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:28:48,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:28:48,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:28:48,469 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:28:48,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:28:48,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:28:48,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:28:48,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:28:48,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:28:48,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:28:48,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:28:48,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:28:48,513 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:28:48,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:28:48,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:28:48,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:28:48,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:28:48,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:28:48,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:28:48,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:28:48,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:28:48,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:28:48,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:28:48,517 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:28:48,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:28:48,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:28:48,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:28:48,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:28:48,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:48,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:28:48,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:28:48,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:28:48,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:28:48,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:28:48,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:28:48,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:28:48,520 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:28:48,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:28:48,520 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0efdc82161997cbf03fd7c104a0f7adcc3337af1f91e29fd2b7831e9d52958e [2022-11-25 15:28:48,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:28:48,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:28:48,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:28:48,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:28:48,798 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:28:48,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/mult-comm.wvr.c [2022-11-25 15:28:51,917 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:28:52,130 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:28:52,131 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/sv-benchmarks/c/weaver/mult-comm.wvr.c [2022-11-25 15:28:52,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/data/4f406e513/cef9b6728f9b416da897feb320577d83/FLAG0d1e09e07 [2022-11-25 15:28:52,152 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/data/4f406e513/cef9b6728f9b416da897feb320577d83 [2022-11-25 15:28:52,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:28:52,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:28:52,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:52,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:28:52,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:28:52,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39366c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52, skipping insertion in model container [2022-11-25 15:28:52,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:28:52,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:28:52,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/sv-benchmarks/c/weaver/mult-comm.wvr.c[1910,1923] [2022-11-25 15:28:52,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:52,392 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:28:52,412 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/sv-benchmarks/c/weaver/mult-comm.wvr.c[1910,1923] [2022-11-25 15:28:52,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:52,427 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:28:52,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52 WrapperNode [2022-11-25 15:28:52,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:52,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:52,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:28:52,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:28:52,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,466 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2022-11-25 15:28:52,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:52,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:28:52,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:28:52,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:28:52,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:28:52,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:28:52,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:28:52,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:28:52,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (1/1) ... [2022-11-25 15:28:52,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:52,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:52,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:28:52,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:28:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:28:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:28:52,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:28:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:28:52,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:28:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:28:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:28:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:28:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:28:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:28:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:28:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:28:52,586 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:28:52,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:28:52,776 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:28:53,028 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:28:53,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:28:53,035 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 15:28:53,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:53 BoogieIcfgContainer [2022-11-25 15:28:53,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:28:53,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:28:53,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:28:53,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:28:53,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:28:52" (1/3) ... [2022-11-25 15:28:53,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d62438e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:53, skipping insertion in model container [2022-11-25 15:28:53,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:52" (2/3) ... [2022-11-25 15:28:53,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d62438e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:53, skipping insertion in model container [2022-11-25 15:28:53,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:53" (3/3) ... [2022-11-25 15:28:53,060 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2022-11-25 15:28:53,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:28:53,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:28:53,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:28:53,081 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:28:53,157 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 15:28:53,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 176 flow [2022-11-25 15:28:53,238 INFO L130 PetriNetUnfolder]: 5/78 cut-off events. [2022-11-25 15:28:53,238 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:28:53,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 5/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-11-25 15:28:53,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 176 flow [2022-11-25 15:28:53,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 69 transitions, 150 flow [2022-11-25 15:28:53,252 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:28:53,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 69 transitions, 150 flow [2022-11-25 15:28:53,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 69 transitions, 150 flow [2022-11-25 15:28:53,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 69 transitions, 150 flow [2022-11-25 15:28:53,305 INFO L130 PetriNetUnfolder]: 5/69 cut-off events. [2022-11-25 15:28:53,305 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:28:53,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 5/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2022-11-25 15:28:53,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 500 [2022-11-25 15:28:55,625 INFO L134 LiptonReduction]: Checked pairs total: 509 [2022-11-25 15:28:55,626 INFO L136 LiptonReduction]: Total number of compositions: 61 [2022-11-25 15:28:55,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:28:55,662 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;@687a8d28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:28:55,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 15:28:55,670 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-11-25 15:28:55,670 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:28:55,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:55,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:55,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:28:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2074144936, now seen corresponding path program 1 times [2022-11-25 15:28:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:55,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993389780] [2022-11-25 15:28:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:56,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993389780] [2022-11-25 15:28:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993389780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:56,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:56,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981062326] [2022-11-25 15:28:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:56,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:56,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:28:56,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2022-11-25 15:28:56,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2022-11-25 15:28:56,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:56,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2022-11-25 15:28:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:56,749 INFO L130 PetriNetUnfolder]: 65/114 cut-off events. [2022-11-25 15:28:56,750 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 15:28:56,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 114 events. 65/114 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 321 event pairs, 9 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 179. Up to 85 conditions per place. [2022-11-25 15:28:56,756 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 19 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2022-11-25 15:28:56,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 25 transitions, 117 flow [2022-11-25 15:28:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:28:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-25 15:28:56,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2022-11-25 15:28:56,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-25 15:28:56,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-25 15:28:56,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:56,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-25 15:28:56,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-11-25 15:28:56,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 15:28:56,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-11-25 15:28:56,803 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 225 transitions. [2022-11-25 15:28:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 25 transitions, 117 flow [2022-11-25 15:28:56,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:28:56,812 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2022-11-25 15:28:56,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2022-11-25 15:28:56,819 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2022-11-25 15:28:56,819 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2022-11-25 15:28:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2022-11-25 15:28:56,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:56,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:28:56,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:28:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 100295433, now seen corresponding path program 1 times [2022-11-25 15:28:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:56,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987846404] [2022-11-25 15:28:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987846404] [2022-11-25 15:28:57,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987846404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:57,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125484268] [2022-11-25 15:28:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:57,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:57,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:57,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:57,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:28:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:57,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:28:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:57,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:58,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125484268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:58,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:58,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-11-25 15:28:58,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757117790] [2022-11-25 15:28:58,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:28:58,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:28:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:58,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2022-11-25 15:28:58,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 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) [2022-11-25 15:28:58,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:58,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2022-11-25 15:28:58,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:58,510 INFO L130 PetriNetUnfolder]: 75/137 cut-off events. [2022-11-25 15:28:58,510 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 15:28:58,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 137 events. 75/137 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 443 event pairs, 1 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 84. Up to 79 conditions per place. [2022-11-25 15:28:58,512 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 21 selfloop transitions, 5 changer transitions 15/42 dead transitions. [2022-11-25 15:28:58,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 42 transitions, 200 flow [2022-11-25 15:28:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:28:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:28:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2022-11-25 15:28:58,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2022-11-25 15:28:58,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 414 transitions. [2022-11-25 15:28:58,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 414 transitions. [2022-11-25 15:28:58,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:58,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 414 transitions. [2022-11-25 15:28:58,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 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) [2022-11-25 15:28:58,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2022-11-25 15:28:58,522 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2022-11-25 15:28:58,523 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 414 transitions. [2022-11-25 15:28:58,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 42 transitions, 200 flow [2022-11-25 15:28:58,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 42 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:28:58,525 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2022-11-25 15:28:58,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2022-11-25 15:28:58,526 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2022-11-25 15:28:58,527 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2022-11-25 15:28:58,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 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) [2022-11-25 15:28:58,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:58,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:58,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:58,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:58,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:28:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:58,736 INFO L85 PathProgramCache]: Analyzing trace with hash 129333289, now seen corresponding path program 1 times [2022-11-25 15:28:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:58,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041844116] [2022-11-25 15:28:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:59,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041844116] [2022-11-25 15:28:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041844116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:59,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909241473] [2022-11-25 15:28:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:59,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:59,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:59,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:28:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:59,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:28:59,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:59,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:59,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909241473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:59,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:28:59,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-11-25 15:28:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311394153] [2022-11-25 15:28:59,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:28:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:28:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:59,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2022-11-25 15:28:59,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 9 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 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) [2022-11-25 15:28:59,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:28:59,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2022-11-25 15:28:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:28:59,903 INFO L130 PetriNetUnfolder]: 48/93 cut-off events. [2022-11-25 15:28:59,903 INFO L131 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2022-11-25 15:28:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 93 events. 48/93 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 203 event pairs, 8 based on Foata normal form. 8/101 useless extension candidates. Maximal degree in co-relation 255. Up to 69 conditions per place. [2022-11-25 15:28:59,905 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 17 selfloop transitions, 6 changer transitions 9/34 dead transitions. [2022-11-25 15:28:59,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 189 flow [2022-11-25 15:28:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:28:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:28:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2022-11-25 15:28:59,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47754137115839246 [2022-11-25 15:28:59,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2022-11-25 15:28:59,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2022-11-25 15:28:59,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:28:59,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2022-11-25 15:28:59,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 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) [2022-11-25 15:28:59,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2022-11-25 15:28:59,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2022-11-25 15:28:59,916 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 404 transitions. [2022-11-25 15:28:59,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 189 flow [2022-11-25 15:28:59,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 167 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-25 15:28:59,919 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2022-11-25 15:28:59,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2022-11-25 15:28:59,920 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2022-11-25 15:28:59,920 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2022-11-25 15:28:59,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.88888888888889) internal successors, (584), 9 states have internal predecessors, (584), 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) [2022-11-25 15:28:59,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:28:59,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:59,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 15:29:00,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:00,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:29:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1501559719, now seen corresponding path program 2 times [2022-11-25 15:29:00,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:00,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091774909] [2022-11-25 15:29:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:00,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:00,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091774909] [2022-11-25 15:29:00,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091774909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:00,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120993476] [2022-11-25 15:29:00,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:00,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:00,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:00,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:00,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:29:00,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:29:00,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:00,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 15:29:00,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:00,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:01,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120993476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:01,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:01,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2022-11-25 15:29:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58935927] [2022-11-25 15:29:01,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:01,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:29:01,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:29:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:29:01,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2022-11-25 15:29:01,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 13 states, 13 states have (on average 61.76923076923077) internal successors, (803), 13 states have internal predecessors, (803), 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) [2022-11-25 15:29:01,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:01,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2022-11-25 15:29:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:01,750 INFO L130 PetriNetUnfolder]: 113/211 cut-off events. [2022-11-25 15:29:01,751 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-25 15:29:01,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 211 events. 113/211 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 684 event pairs, 9 based on Foata normal form. 3/214 useless extension candidates. Maximal degree in co-relation 601. Up to 92 conditions per place. [2022-11-25 15:29:01,753 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 41 selfloop transitions, 19 changer transitions 12/72 dead transitions. [2022-11-25 15:29:01,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 72 transitions, 397 flow [2022-11-25 15:29:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:29:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 15:29:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 723 transitions. [2022-11-25 15:29:01,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4661508704061896 [2022-11-25 15:29:01,758 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 723 transitions. [2022-11-25 15:29:01,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 723 transitions. [2022-11-25 15:29:01,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:01,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 723 transitions. [2022-11-25 15:29:01,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.72727272727273) internal successors, (723), 11 states have internal predecessors, (723), 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) [2022-11-25 15:29:01,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 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) [2022-11-25 15:29:01,765 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 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) [2022-11-25 15:29:01,765 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 11 states and 723 transitions. [2022-11-25 15:29:01,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 72 transitions, 397 flow [2022-11-25 15:29:01,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 72 transitions, 384 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:01,769 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 198 flow [2022-11-25 15:29:01,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=198, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-11-25 15:29:01,770 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 20 predicate places. [2022-11-25 15:29:01,771 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 198 flow [2022-11-25 15:29:01,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.76923076923077) internal successors, (803), 13 states have internal predecessors, (803), 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) [2022-11-25 15:29:01,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:01,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:01,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:01,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:01,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:29:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash -724919637, now seen corresponding path program 3 times [2022-11-25 15:29:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:01,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571159092] [2022-11-25 15:29:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:02,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571159092] [2022-11-25 15:29:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571159092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216841535] [2022-11-25 15:29:02,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:29:02,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:02,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:02,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:02,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:29:02,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:29:02,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:02,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 15:29:02,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:02,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:02,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216841535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:02,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:02,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 10 [2022-11-25 15:29:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298321438] [2022-11-25 15:29:02,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:29:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:29:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:02,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2022-11-25 15:29:02,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 61.666666666666664) internal successors, (740), 12 states have internal predecessors, (740), 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) [2022-11-25 15:29:02,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:02,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2022-11-25 15:29:02,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:03,326 INFO L130 PetriNetUnfolder]: 136/263 cut-off events. [2022-11-25 15:29:03,326 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-11-25 15:29:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 263 events. 136/263 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 920 event pairs, 23 based on Foata normal form. 3/262 useless extension candidates. Maximal degree in co-relation 876. Up to 180 conditions per place. [2022-11-25 15:29:03,330 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 44 selfloop transitions, 18 changer transitions 12/74 dead transitions. [2022-11-25 15:29:03,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 506 flow [2022-11-25 15:29:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:29:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 15:29:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 655 transitions. [2022-11-25 15:29:03,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2022-11-25 15:29:03,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 655 transitions. [2022-11-25 15:29:03,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 655 transitions. [2022-11-25 15:29:03,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:03,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 655 transitions. [2022-11-25 15:29:03,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 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) [2022-11-25 15:29:03,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-25 15:29:03,346 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 141.0) internal successors, (1551), 11 states have internal predecessors, (1551), 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) [2022-11-25 15:29:03,346 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 198 flow. Second operand 10 states and 655 transitions. [2022-11-25 15:29:03,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 506 flow [2022-11-25 15:29:03,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 438 flow, removed 23 selfloop flow, removed 5 redundant places. [2022-11-25 15:29:03,352 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 272 flow [2022-11-25 15:29:03,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2022-11-25 15:29:03,353 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2022-11-25 15:29:03,353 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 272 flow [2022-11-25 15:29:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.666666666666664) internal successors, (740), 12 states have internal predecessors, (740), 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) [2022-11-25 15:29:03,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:03,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:03,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:03,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:03,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:29:03,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1190387575, now seen corresponding path program 2 times [2022-11-25 15:29:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:03,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891031649] [2022-11-25 15:29:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:03,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:03,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:03,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891031649] [2022-11-25 15:29:03,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891031649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:03,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182851550] [2022-11-25 15:29:03,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:03,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:03,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:03,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:03,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:29:03,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:29:03,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:03,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:29:03,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:04,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182851550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:04,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:04,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-25 15:29:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274379089] [2022-11-25 15:29:04,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:29:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:29:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:29:04,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2022-11-25 15:29:04,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 64.8) internal successors, (648), 10 states have internal predecessors, (648), 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) [2022-11-25 15:29:04,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:04,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2022-11-25 15:29:04,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:05,160 INFO L130 PetriNetUnfolder]: 166/329 cut-off events. [2022-11-25 15:29:05,161 INFO L131 PetriNetUnfolder]: For 684/694 co-relation queries the response was YES. [2022-11-25 15:29:05,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 329 events. 166/329 cut-off events. For 684/694 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1384 event pairs, 22 based on Foata normal form. 9/324 useless extension candidates. Maximal degree in co-relation 1121. Up to 233 conditions per place. [2022-11-25 15:29:05,166 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 55 selfloop transitions, 18 changer transitions 6/82 dead transitions. [2022-11-25 15:29:05,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 600 flow [2022-11-25 15:29:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:29:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:29:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 617 transitions. [2022-11-25 15:29:05,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4862096138691883 [2022-11-25 15:29:05,171 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 617 transitions. [2022-11-25 15:29:05,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 617 transitions. [2022-11-25 15:29:05,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:05,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 617 transitions. [2022-11-25 15:29:05,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.55555555555556) internal successors, (617), 9 states have internal predecessors, (617), 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) [2022-11-25 15:29:05,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-25 15:29:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 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) [2022-11-25 15:29:05,181 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 272 flow. Second operand 9 states and 617 transitions. [2022-11-25 15:29:05,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 600 flow [2022-11-25 15:29:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 82 transitions, 551 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-25 15:29:05,189 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 337 flow [2022-11-25 15:29:05,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=337, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2022-11-25 15:29:05,193 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 37 predicate places. [2022-11-25 15:29:05,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 337 flow [2022-11-25 15:29:05,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.8) internal successors, (648), 10 states have internal predecessors, (648), 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) [2022-11-25 15:29:05,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:05,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:05,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 15:29:05,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:29:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash -100163345, now seen corresponding path program 3 times [2022-11-25 15:29:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:05,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711685073] [2022-11-25 15:29:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:05,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711685073] [2022-11-25 15:29:05,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711685073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203609752] [2022-11-25 15:29:05,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:29:05,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:05,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:05,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:29:05,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:29:05,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:05,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:29:05,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:05,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:06,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203609752] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:06,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:29:06,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 9 [2022-11-25 15:29:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821300567] [2022-11-25 15:29:06,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:06,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2022-11-25 15:29:06,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2022-11-25 15:29:06,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:06,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2022-11-25 15:29:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:06,288 INFO L130 PetriNetUnfolder]: 182/357 cut-off events. [2022-11-25 15:29:06,289 INFO L131 PetriNetUnfolder]: For 734/744 co-relation queries the response was YES. [2022-11-25 15:29:06,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 357 events. 182/357 cut-off events. For 734/744 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1498 event pairs, 46 based on Foata normal form. 7/349 useless extension candidates. Maximal degree in co-relation 1248. Up to 313 conditions per place. [2022-11-25 15:29:06,294 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 49 selfloop transitions, 12 changer transitions 2/66 dead transitions. [2022-11-25 15:29:06,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 526 flow [2022-11-25 15:29:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:29:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2022-11-25 15:29:06,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2022-11-25 15:29:06,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 340 transitions. [2022-11-25 15:29:06,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 340 transitions. [2022-11-25 15:29:06,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:06,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 340 transitions. [2022-11-25 15:29:06,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 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) [2022-11-25 15:29:06,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2022-11-25 15:29:06,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2022-11-25 15:29:06,301 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 337 flow. Second operand 5 states and 340 transitions. [2022-11-25 15:29:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 526 flow [2022-11-25 15:29:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 474 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-25 15:29:06,309 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 360 flow [2022-11-25 15:29:06,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-11-25 15:29:06,310 INFO L288 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2022-11-25 15:29:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 360 flow [2022-11-25 15:29:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2022-11-25 15:29:06,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:06,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:06,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 15:29:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:06,519 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 15:29:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1790613686, now seen corresponding path program 1 times [2022-11-25 15:29:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:06,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895887249] [2022-11-25 15:29:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895887249] [2022-11-25 15:29:07,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895887249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905303558] [2022-11-25 15:29:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:07,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:07,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8730b1b4-b44f-40cd-9252-bb518e6c6009/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:29:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 15:29:07,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:07,525 INFO L328 TraceCheckSpWp]: Computing backward predicates...