./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8 --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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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-e04fb08 [2022-11-16 11:37:03,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:37:03,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:37:03,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:37:03,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:37:03,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:37:03,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:37:03,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:37:03,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:37:03,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:37:03,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:37:03,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:37:03,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:37:03,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:37:03,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:37:03,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:37:03,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:37:03,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:37:03,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:37:03,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:37:03,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:37:03,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:37:03,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:37:03,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:37:03,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:37:03,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:37:03,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:37:03,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:37:03,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:37:03,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:37:03,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:37:03,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:37:03,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:37:03,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:37:03,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:37:03,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:37:03,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:37:03,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:37:03,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:37:03,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:37:03,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:37:03,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:37:03,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:37:03,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:37:03,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:37:03,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:37:03,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:37:03,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:37:03,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:37:03,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:37:03,524 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:37:03,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:37:03,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:37:03,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:37:03,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:37:03,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:37:03,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:37:03,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:37:03,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:37:03,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:37:03,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:37:03,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:37:03,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:37:03,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:37:03,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:37:03,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:37:03,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:03,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:37:03,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:37:03,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:37:03,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:37:03,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:37:03,538 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:37:03,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:37:03,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:37:03,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-16 11:37:03,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:37:03,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:37:03,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:37:03,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:37:03,875 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:37:03,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-16 11:37:03,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/data/672741720/c664a97897874743a383a8d216e02027/FLAG38045e633 [2022-11-16 11:37:04,560 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:37:04,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-16 11:37:04,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/data/672741720/c664a97897874743a383a8d216e02027/FLAG38045e633 [2022-11-16 11:37:04,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/data/672741720/c664a97897874743a383a8d216e02027 [2022-11-16 11:37:04,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:37:04,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:37:04,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:04,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:37:04,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:37:04,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:04" (1/1) ... [2022-11-16 11:37:04,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a64ba91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:04, skipping insertion in model container [2022-11-16 11:37:04,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:04" (1/1) ... [2022-11-16 11:37:04,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:37:04,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:05,200 WARN L229 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_e0d62585-9a23-4136-943c-2b636dace30a/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-16 11:37:05,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:05,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:37:05,274 WARN L229 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_e0d62585-9a23-4136-943c-2b636dace30a/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-16 11:37:05,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:05,303 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:37:05,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05 WrapperNode [2022-11-16 11:37:05,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:05,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:05,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:37:05,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:37:05,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,377 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 271 [2022-11-16 11:37:05,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:05,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:37:05,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:37:05,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:37:05,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:37:05,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:37:05,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:37:05,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:37:05,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (1/1) ... [2022-11-16 11:37:05,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:05,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:05,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:37:05,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:37:05,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:37:05,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:37:05,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:37:05,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:37:05,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:37:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:37:05,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:37:05,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:37:05,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:37:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:37:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:37:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:37:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:37:05,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:37:05,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:37:05,519 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:37:05,698 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:37:05,700 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:37:06,386 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:37:06,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:37:06,403 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:37:06,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:06 BoogieIcfgContainer [2022-11-16 11:37:06,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:37:06,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:37:06,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:37:06,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:37:06,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:37:04" (1/3) ... [2022-11-16 11:37:06,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eafd663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:06, skipping insertion in model container [2022-11-16 11:37:06,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:05" (2/3) ... [2022-11-16 11:37:06,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eafd663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:06, skipping insertion in model container [2022-11-16 11:37:06,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:06" (3/3) ... [2022-11-16 11:37:06,422 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-16 11:37:06,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:37:06,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:37:06,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:37:06,447 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:37:06,642 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:37:06,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 356 transitions, 736 flow [2022-11-16 11:37:06,937 INFO L130 PetriNetUnfolder]: 28/353 cut-off events. [2022-11-16 11:37:06,938 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:37:06,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 353 events. 28/353 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 272. Up to 2 conditions per place. [2022-11-16 11:37:06,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 356 transitions, 736 flow [2022-11-16 11:37:06,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 342 transitions, 702 flow [2022-11-16 11:37:06,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:37:06,982 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;@5af7fd9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:37:06,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:37:07,085 INFO L130 PetriNetUnfolder]: 28/341 cut-off events. [2022-11-16 11:37:07,085 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:37:07,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:07,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:07,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 693346532, now seen corresponding path program 1 times [2022-11-16 11:37:07,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:07,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763891425] [2022-11-16 11:37:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:07,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763891425] [2022-11-16 11:37:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763891425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:07,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:07,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:37:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602819680] [2022-11-16 11:37:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:37:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:37:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:37:07,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 356 [2022-11-16 11:37:07,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 342 transitions, 702 flow. Second operand has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2022-11-16 11:37:07,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:07,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 356 [2022-11-16 11:37:07,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:07,887 INFO L130 PetriNetUnfolder]: 6/320 cut-off events. [2022-11-16 11:37:07,887 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-16 11:37:07,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 320 events. 6/320 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 539 event pairs, 0 based on Foata normal form. 34/332 useless extension candidates. Maximal degree in co-relation 257. Up to 7 conditions per place. [2022-11-16 11:37:07,898 INFO L137 encePairwiseOnDemand]: 334/356 looper letters, 6 selfloop transitions, 0 changer transitions 7/320 dead transitions. [2022-11-16 11:37:07,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 320 transitions, 670 flow [2022-11-16 11:37:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:37:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:37:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 682 transitions. [2022-11-16 11:37:07,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9578651685393258 [2022-11-16 11:37:07,926 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 682 transitions. [2022-11-16 11:37:07,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 682 transitions. [2022-11-16 11:37:07,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:07,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 682 transitions. [2022-11-16 11:37:07,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 341.0) internal successors, (682), 2 states have internal predecessors, (682), 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) [2022-11-16 11:37:07,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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) [2022-11-16 11:37:07,953 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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) [2022-11-16 11:37:07,955 INFO L175 Difference]: Start difference. First operand has 324 places, 342 transitions, 702 flow. Second operand 2 states and 682 transitions. [2022-11-16 11:37:07,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 320 transitions, 670 flow [2022-11-16 11:37:07,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 320 transitions, 658 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:37:07,973 INFO L231 Difference]: Finished difference. Result has 319 places, 313 transitions, 632 flow [2022-11-16 11:37:07,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=632, PETRI_PLACES=319, PETRI_TRANSITIONS=313} [2022-11-16 11:37:07,983 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, -5 predicate places. [2022-11-16 11:37:07,983 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 313 transitions, 632 flow [2022-11-16 11:37:07,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2022-11-16 11:37:07,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:07,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:07,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:37:07,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:07,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash 194831834, now seen corresponding path program 1 times [2022-11-16 11:37:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:07,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629756601] [2022-11-16 11:37:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:08,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:08,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629756601] [2022-11-16 11:37:08,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629756601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:08,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:37:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210494115] [2022-11-16 11:37:08,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:37:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:37:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:37:08,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 356 [2022-11-16 11:37:08,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 313 transitions, 632 flow. Second operand has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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) [2022-11-16 11:37:08,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:08,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 356 [2022-11-16 11:37:08,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:08,951 INFO L130 PetriNetUnfolder]: 6/331 cut-off events. [2022-11-16 11:37:08,951 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:37:08,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 331 events. 6/331 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 523 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 388. Up to 38 conditions per place. [2022-11-16 11:37:08,955 INFO L137 encePairwiseOnDemand]: 341/356 looper letters, 42 selfloop transitions, 12 changer transitions 0/325 dead transitions. [2022-11-16 11:37:08,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 325 transitions, 764 flow [2022-11-16 11:37:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1512 transitions. [2022-11-16 11:37:08,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.849438202247191 [2022-11-16 11:37:08,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1512 transitions. [2022-11-16 11:37:08,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1512 transitions. [2022-11-16 11:37:08,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:08,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1512 transitions. [2022-11-16 11:37:08,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.4) internal successors, (1512), 5 states have internal predecessors, (1512), 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) [2022-11-16 11:37:08,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 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) [2022-11-16 11:37:08,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 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) [2022-11-16 11:37:08,977 INFO L175 Difference]: Start difference. First operand has 319 places, 313 transitions, 632 flow. Second operand 5 states and 1512 transitions. [2022-11-16 11:37:08,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 325 transitions, 764 flow [2022-11-16 11:37:08,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 325 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:37:08,991 INFO L231 Difference]: Finished difference. Result has 317 places, 316 transitions, 680 flow [2022-11-16 11:37:08,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=317, PETRI_TRANSITIONS=316} [2022-11-16 11:37:08,994 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, -7 predicate places. [2022-11-16 11:37:08,994 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 316 transitions, 680 flow [2022-11-16 11:37:08,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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) [2022-11-16 11:37:08,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:08,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:37:08,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1159981807, now seen corresponding path program 1 times [2022-11-16 11:37:09,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365377579] [2022-11-16 11:37:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:09,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:37:09,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:09,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365377579] [2022-11-16 11:37:09,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365377579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:09,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085134971] [2022-11-16 11:37:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:09,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:37:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:37:09,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:37:09,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:37:10,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085134971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:10,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:10,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:37:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100968771] [2022-11-16 11:37:10,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:10,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:37:10,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:10,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:37:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:37:10,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 356 [2022-11-16 11:37:10,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 316 transitions, 680 flow. Second operand has 15 states, 15 states have (on average 292.3333333333333) internal successors, (4385), 15 states have internal predecessors, (4385), 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) [2022-11-16 11:37:10,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:10,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 356 [2022-11-16 11:37:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:10,778 INFO L130 PetriNetUnfolder]: 6/358 cut-off events. [2022-11-16 11:37:10,778 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-16 11:37:10,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 358 events. 6/358 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 496 event pairs, 0 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 463. Up to 29 conditions per place. [2022-11-16 11:37:10,785 INFO L137 encePairwiseOnDemand]: 332/356 looper letters, 45 selfloop transitions, 33 changer transitions 0/346 dead transitions. [2022-11-16 11:37:10,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 346 transitions, 902 flow [2022-11-16 11:37:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:37:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:37:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3252 transitions. [2022-11-16 11:37:10,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8304392236976507 [2022-11-16 11:37:10,794 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3252 transitions. [2022-11-16 11:37:10,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3252 transitions. [2022-11-16 11:37:10,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:10,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3252 transitions. [2022-11-16 11:37:10,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 295.6363636363636) internal successors, (3252), 11 states have internal predecessors, (3252), 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) [2022-11-16 11:37:10,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:10,819 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:10,819 INFO L175 Difference]: Start difference. First operand has 317 places, 316 transitions, 680 flow. Second operand 11 states and 3252 transitions. [2022-11-16 11:37:10,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 346 transitions, 902 flow [2022-11-16 11:37:10,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 346 transitions, 884 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:10,830 INFO L231 Difference]: Finished difference. Result has 327 places, 334 transitions, 829 flow [2022-11-16 11:37:10,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=327, PETRI_TRANSITIONS=334} [2022-11-16 11:37:10,834 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 3 predicate places. [2022-11-16 11:37:10,834 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 334 transitions, 829 flow [2022-11-16 11:37:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 292.3333333333333) internal successors, (4385), 15 states have internal predecessors, (4385), 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) [2022-11-16 11:37:10,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:10,839 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:10,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:11,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:11,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:11,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1002340957, now seen corresponding path program 2 times [2022-11-16 11:37:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:11,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031987388] [2022-11-16 11:37:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:37:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:11,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031987388] [2022-11-16 11:37:11,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031987388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401650603] [2022-11-16 11:37:11,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:37:11,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:11,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:11,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:11,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:37:11,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:37:11,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:11,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:37:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:37:12,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401650603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:12,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:12,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-16 11:37:12,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646713060] [2022-11-16 11:37:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:12,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:12,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:37:12,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-16 11:37:12,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 334 transitions, 829 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:12,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:12,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-16 11:37:12,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:14,171 INFO L130 PetriNetUnfolder]: 744/3344 cut-off events. [2022-11-16 11:37:14,171 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-16 11:37:14,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 3344 events. 744/3344 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 27549 event pairs, 14 based on Foata normal form. 0/3072 useless extension candidates. Maximal degree in co-relation 4949. Up to 420 conditions per place. [2022-11-16 11:37:14,224 INFO L137 encePairwiseOnDemand]: 344/356 looper letters, 116 selfloop transitions, 35 changer transitions 0/452 dead transitions. [2022-11-16 11:37:14,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 452 transitions, 1389 flow [2022-11-16 11:37:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:37:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:37:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4954 transitions. [2022-11-16 11:37:14,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8697331460674157 [2022-11-16 11:37:14,237 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4954 transitions. [2022-11-16 11:37:14,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4954 transitions. [2022-11-16 11:37:14,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:14,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4954 transitions. [2022-11-16 11:37:14,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 309.625) internal successors, (4954), 16 states have internal predecessors, (4954), 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) [2022-11-16 11:37:14,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-16 11:37:14,271 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-16 11:37:14,272 INFO L175 Difference]: Start difference. First operand has 327 places, 334 transitions, 829 flow. Second operand 16 states and 4954 transitions. [2022-11-16 11:37:14,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 452 transitions, 1389 flow [2022-11-16 11:37:14,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 452 transitions, 1364 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:14,288 INFO L231 Difference]: Finished difference. Result has 348 places, 365 transitions, 1018 flow [2022-11-16 11:37:14,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1018, PETRI_PLACES=348, PETRI_TRANSITIONS=365} [2022-11-16 11:37:14,291 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 24 predicate places. [2022-11-16 11:37:14,291 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 365 transitions, 1018 flow [2022-11-16 11:37:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:14,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:14,293 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:14,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:14,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash -683019127, now seen corresponding path program 3 times [2022-11-16 11:37:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431036241] [2022-11-16 11:37:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:37:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:15,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431036241] [2022-11-16 11:37:15,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431036241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:15,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588261163] [2022-11-16 11:37:15,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:37:15,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:15,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:15,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:37:15,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:37:15,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:15,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:37:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 11:37:15,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:15,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588261163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:15,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:15,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-16 11:37:15,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301328086] [2022-11-16 11:37:15,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:15,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:15,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:37:15,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-16 11:37:15,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 365 transitions, 1018 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:15,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:15,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-16 11:37:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:17,590 INFO L130 PetriNetUnfolder]: 1067/4456 cut-off events. [2022-11-16 11:37:17,590 INFO L131 PetriNetUnfolder]: For 2186/2428 co-relation queries the response was YES. [2022-11-16 11:37:17,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 4456 events. 1067/4456 cut-off events. For 2186/2428 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 36773 event pairs, 370 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 7992. Up to 704 conditions per place. [2022-11-16 11:37:17,761 INFO L137 encePairwiseOnDemand]: 346/356 looper letters, 146 selfloop transitions, 40 changer transitions 0/487 dead transitions. [2022-11-16 11:37:17,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 487 transitions, 1863 flow [2022-11-16 11:37:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:37:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:37:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3425 transitions. [2022-11-16 11:37:17,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8746169560776302 [2022-11-16 11:37:17,771 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3425 transitions. [2022-11-16 11:37:17,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3425 transitions. [2022-11-16 11:37:17,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:17,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3425 transitions. [2022-11-16 11:37:17,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 311.3636363636364) internal successors, (3425), 11 states have internal predecessors, (3425), 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) [2022-11-16 11:37:17,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:17,815 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:17,815 INFO L175 Difference]: Start difference. First operand has 348 places, 365 transitions, 1018 flow. Second operand 11 states and 3425 transitions. [2022-11-16 11:37:17,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 487 transitions, 1863 flow [2022-11-16 11:37:17,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 487 transitions, 1863 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:37:17,853 INFO L231 Difference]: Finished difference. Result has 363 places, 392 transitions, 1278 flow [2022-11-16 11:37:17,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1278, PETRI_PLACES=363, PETRI_TRANSITIONS=392} [2022-11-16 11:37:17,858 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 39 predicate places. [2022-11-16 11:37:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 392 transitions, 1278 flow [2022-11-16 11:37:17,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:17,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:17,861 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:17,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:18,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:18,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash 897776607, now seen corresponding path program 4 times [2022-11-16 11:37:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:18,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950202499] [2022-11-16 11:37:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:37:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950202499] [2022-11-16 11:37:18,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950202499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:18,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104682343] [2022-11-16 11:37:18,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:37:18,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:18,554 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:18,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:37:18,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:37:18,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:18,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:37:18,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:37:19,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:37:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104682343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:19,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:19,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 11:37:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747933720] [2022-11-16 11:37:19,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:37:19,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:37:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:37:19,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 356 [2022-11-16 11:37:19,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 392 transitions, 1278 flow. Second operand has 22 states, 22 states have (on average 291.8636363636364) internal successors, (6421), 22 states have internal predecessors, (6421), 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) [2022-11-16 11:37:19,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:19,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 356 [2022-11-16 11:37:19,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:20,274 INFO L130 PetriNetUnfolder]: 72/1251 cut-off events. [2022-11-16 11:37:20,274 INFO L131 PetriNetUnfolder]: For 431/464 co-relation queries the response was YES. [2022-11-16 11:37:20,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 1251 events. 72/1251 cut-off events. For 431/464 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6202 event pairs, 4 based on Foata normal form. 13/1219 useless extension candidates. Maximal degree in co-relation 1866. Up to 42 conditions per place. [2022-11-16 11:37:20,304 INFO L137 encePairwiseOnDemand]: 332/356 looper letters, 57 selfloop transitions, 51 changer transitions 0/434 dead transitions. [2022-11-16 11:37:20,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 434 transitions, 1662 flow [2022-11-16 11:37:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:37:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:37:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5010 transitions. [2022-11-16 11:37:20,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278255122273629 [2022-11-16 11:37:20,321 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5010 transitions. [2022-11-16 11:37:20,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5010 transitions. [2022-11-16 11:37:20,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:20,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5010 transitions. [2022-11-16 11:37:20,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 294.70588235294116) internal successors, (5010), 17 states have internal predecessors, (5010), 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) [2022-11-16 11:37:20,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 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) [2022-11-16 11:37:20,358 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 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) [2022-11-16 11:37:20,359 INFO L175 Difference]: Start difference. First operand has 363 places, 392 transitions, 1278 flow. Second operand 17 states and 5010 transitions. [2022-11-16 11:37:20,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 434 transitions, 1662 flow [2022-11-16 11:37:20,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 434 transitions, 1650 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-16 11:37:20,378 INFO L231 Difference]: Finished difference. Result has 382 places, 413 transitions, 1529 flow [2022-11-16 11:37:20,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1529, PETRI_PLACES=382, PETRI_TRANSITIONS=413} [2022-11-16 11:37:20,382 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 58 predicate places. [2022-11-16 11:37:20,382 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 413 transitions, 1529 flow [2022-11-16 11:37:20,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 291.8636363636364) internal successors, (6421), 22 states have internal predecessors, (6421), 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) [2022-11-16 11:37:20,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:20,385 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:20,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:37:20,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:20,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1704543891, now seen corresponding path program 5 times [2022-11-16 11:37:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:20,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765165479] [2022-11-16 11:37:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765165479] [2022-11-16 11:37:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765165479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:21,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:21,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:37:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881397558] [2022-11-16 11:37:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:37:21,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 356 [2022-11-16 11:37:21,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 413 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 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) [2022-11-16 11:37:21,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:21,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 356 [2022-11-16 11:37:21,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:22,534 INFO L130 PetriNetUnfolder]: 286/2259 cut-off events. [2022-11-16 11:37:22,534 INFO L131 PetriNetUnfolder]: For 616/745 co-relation queries the response was YES. [2022-11-16 11:37:22,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 2259 events. 286/2259 cut-off events. For 616/745 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17499 event pairs, 104 based on Foata normal form. 11/2052 useless extension candidates. Maximal degree in co-relation 3300. Up to 302 conditions per place. [2022-11-16 11:37:22,601 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 54 selfloop transitions, 4 changer transitions 5/429 dead transitions. [2022-11-16 11:37:22,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 429 transitions, 1694 flow [2022-11-16 11:37:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2022-11-16 11:37:22,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8093900481540931 [2022-11-16 11:37:22,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2022-11-16 11:37:22,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2022-11-16 11:37:22,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:22,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2022-11-16 11:37:22,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 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) [2022-11-16 11:37:22,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 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) [2022-11-16 11:37:22,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 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) [2022-11-16 11:37:22,621 INFO L175 Difference]: Start difference. First operand has 382 places, 413 transitions, 1529 flow. Second operand 7 states and 2017 transitions. [2022-11-16 11:37:22,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 429 transitions, 1694 flow [2022-11-16 11:37:22,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 429 transitions, 1627 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-16 11:37:22,638 INFO L231 Difference]: Finished difference. Result has 384 places, 415 transitions, 1488 flow [2022-11-16 11:37:22,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1488, PETRI_PLACES=384, PETRI_TRANSITIONS=415} [2022-11-16 11:37:22,640 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 60 predicate places. [2022-11-16 11:37:22,640 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 415 transitions, 1488 flow [2022-11-16 11:37:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 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) [2022-11-16 11:37:22,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:22,642 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:22,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:37:22,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:22,643 INFO L85 PathProgramCache]: Analyzing trace with hash 456098275, now seen corresponding path program 1 times [2022-11-16 11:37:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:22,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347055595] [2022-11-16 11:37:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:22,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:23,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:23,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347055595] [2022-11-16 11:37:23,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347055595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:23,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:23,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:37:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383231439] [2022-11-16 11:37:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:23,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:37:23,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-16 11:37:23,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 415 transitions, 1488 flow. Second operand has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-16 11:37:23,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:23,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-16 11:37:23,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:28,430 INFO L130 PetriNetUnfolder]: 2354/11265 cut-off events. [2022-11-16 11:37:28,431 INFO L131 PetriNetUnfolder]: For 3813/4085 co-relation queries the response was YES. [2022-11-16 11:37:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18639 conditions, 11265 events. 2354/11265 cut-off events. For 3813/4085 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 121723 event pairs, 1080 based on Foata normal form. 180/10833 useless extension candidates. Maximal degree in co-relation 18608. Up to 2502 conditions per place. [2022-11-16 11:37:28,696 INFO L137 encePairwiseOnDemand]: 350/356 looper letters, 54 selfloop transitions, 5 changer transitions 3/453 dead transitions. [2022-11-16 11:37:28,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 453 transitions, 1721 flow [2022-11-16 11:37:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:37:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:37:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1919 transitions. [2022-11-16 11:37:28,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8984082397003745 [2022-11-16 11:37:28,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1919 transitions. [2022-11-16 11:37:28,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1919 transitions. [2022-11-16 11:37:28,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:28,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1919 transitions. [2022-11-16 11:37:28,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2022-11-16 11:37:28,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-16 11:37:28,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-16 11:37:28,718 INFO L175 Difference]: Start difference. First operand has 384 places, 415 transitions, 1488 flow. Second operand 6 states and 1919 transitions. [2022-11-16 11:37:28,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 453 transitions, 1721 flow [2022-11-16 11:37:28,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 453 transitions, 1713 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:37:28,782 INFO L231 Difference]: Finished difference. Result has 386 places, 418 transitions, 1510 flow [2022-11-16 11:37:28,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1510, PETRI_PLACES=386, PETRI_TRANSITIONS=418} [2022-11-16 11:37:28,785 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 62 predicate places. [2022-11-16 11:37:28,785 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 418 transitions, 1510 flow [2022-11-16 11:37:28,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-16 11:37:28,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:28,787 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:28,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:37:28,789 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash 454203673, now seen corresponding path program 2 times [2022-11-16 11:37:28,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:28,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580262617] [2022-11-16 11:37:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580262617] [2022-11-16 11:37:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580262617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553760954] [2022-11-16 11:37:29,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:37:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:29,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:29,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:37:29,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:37:29,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:29,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:37:29,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 11:37:30,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:30,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553760954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:30,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:30,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-16 11:37:30,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353714081] [2022-11-16 11:37:30,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:30,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:37:30,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-16 11:37:30,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 418 transitions, 1510 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:30,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:30,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-16 11:37:30,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:33,588 INFO L130 PetriNetUnfolder]: 1746/6660 cut-off events. [2022-11-16 11:37:33,588 INFO L131 PetriNetUnfolder]: For 5555/6731 co-relation queries the response was YES. [2022-11-16 11:37:33,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 6660 events. 1746/6660 cut-off events. For 5555/6731 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 58410 event pairs, 596 based on Foata normal form. 115/6549 useless extension candidates. Maximal degree in co-relation 13548. Up to 1056 conditions per place. [2022-11-16 11:37:33,709 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 153 selfloop transitions, 52 changer transitions 0/532 dead transitions. [2022-11-16 11:37:33,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 532 transitions, 2407 flow [2022-11-16 11:37:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:37:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:37:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3433 transitions. [2022-11-16 11:37:33,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766598569969356 [2022-11-16 11:37:33,718 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3433 transitions. [2022-11-16 11:37:33,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3433 transitions. [2022-11-16 11:37:33,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:33,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3433 transitions. [2022-11-16 11:37:33,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 312.09090909090907) internal successors, (3433), 11 states have internal predecessors, (3433), 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) [2022-11-16 11:37:33,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:33,738 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:37:33,738 INFO L175 Difference]: Start difference. First operand has 386 places, 418 transitions, 1510 flow. Second operand 11 states and 3433 transitions. [2022-11-16 11:37:33,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 532 transitions, 2407 flow [2022-11-16 11:37:33,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 532 transitions, 2403 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:37:33,774 INFO L231 Difference]: Finished difference. Result has 399 places, 433 transitions, 1776 flow [2022-11-16 11:37:33,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1776, PETRI_PLACES=399, PETRI_TRANSITIONS=433} [2022-11-16 11:37:33,776 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 75 predicate places. [2022-11-16 11:37:33,776 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 433 transitions, 1776 flow [2022-11-16 11:37:33,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:33,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:33,777 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:33,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:33,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1997196059, now seen corresponding path program 3 times [2022-11-16 11:37:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757249067] [2022-11-16 11:37:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:34,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:34,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757249067] [2022-11-16 11:37:34,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757249067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:34,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195984661] [2022-11-16 11:37:34,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:37:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:34,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:34,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:34,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:37:35,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:37:35,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:35,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:37:35,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 11:37:35,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:35,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195984661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:35,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:35,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-16 11:37:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773192542] [2022-11-16 11:37:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:35,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:37:35,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-16 11:37:35,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 433 transitions, 1776 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:35,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:35,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-16 11:37:35,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:40,162 INFO L130 PetriNetUnfolder]: 2371/11665 cut-off events. [2022-11-16 11:37:40,162 INFO L131 PetriNetUnfolder]: For 12795/13687 co-relation queries the response was YES. [2022-11-16 11:37:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22696 conditions, 11665 events. 2371/11665 cut-off events. For 12795/13687 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 126351 event pairs, 484 based on Foata normal form. 213/11485 useless extension candidates. Maximal degree in co-relation 22659. Up to 1326 conditions per place. [2022-11-16 11:37:40,468 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 170 selfloop transitions, 83 changer transitions 2/582 dead transitions. [2022-11-16 11:37:40,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 582 transitions, 3204 flow [2022-11-16 11:37:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:37:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 11:37:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4969 transitions. [2022-11-16 11:37:40,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723665730337079 [2022-11-16 11:37:40,486 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4969 transitions. [2022-11-16 11:37:40,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4969 transitions. [2022-11-16 11:37:40,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:40,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4969 transitions. [2022-11-16 11:37:40,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 310.5625) internal successors, (4969), 16 states have internal predecessors, (4969), 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) [2022-11-16 11:37:40,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-16 11:37:40,525 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-16 11:37:40,525 INFO L175 Difference]: Start difference. First operand has 399 places, 433 transitions, 1776 flow. Second operand 16 states and 4969 transitions. [2022-11-16 11:37:40,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 582 transitions, 3204 flow [2022-11-16 11:37:40,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 3107 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-16 11:37:40,596 INFO L231 Difference]: Finished difference. Result has 421 places, 466 transitions, 2336 flow [2022-11-16 11:37:40,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2336, PETRI_PLACES=421, PETRI_TRANSITIONS=466} [2022-11-16 11:37:40,598 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 97 predicate places. [2022-11-16 11:37:40,598 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 466 transitions, 2336 flow [2022-11-16 11:37:40,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:37:40,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:40,600 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:40,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:37:40,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash 472894741, now seen corresponding path program 4 times [2022-11-16 11:37:40,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:40,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037587595] [2022-11-16 11:37:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:41,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:41,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037587595] [2022-11-16 11:37:41,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037587595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:41,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006065902] [2022-11-16 11:37:41,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:37:41,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:41,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:41,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:41,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:37:42,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:37:42,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:42,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:37:42,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:42,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:42,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006065902] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:42,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:37:42,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 9 [2022-11-16 11:37:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748821288] [2022-11-16 11:37:42,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:42,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:42,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:42,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:37:42,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-16 11:37:42,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 466 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-16 11:37:42,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:42,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-16 11:37:42,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:51,421 INFO L130 PetriNetUnfolder]: 3852/27734 cut-off events. [2022-11-16 11:37:51,421 INFO L131 PetriNetUnfolder]: For 7544/7771 co-relation queries the response was YES. [2022-11-16 11:37:51,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40068 conditions, 27734 events. 3852/27734 cut-off events. For 7544/7771 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 368063 event pairs, 237 based on Foata normal form. 133/26353 useless extension candidates. Maximal degree in co-relation 40021. Up to 1883 conditions per place. [2022-11-16 11:37:51,913 INFO L137 encePairwiseOnDemand]: 347/356 looper letters, 58 selfloop transitions, 18 changer transitions 1/516 dead transitions. [2022-11-16 11:37:51,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 516 transitions, 2644 flow [2022-11-16 11:37:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:37:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:37:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2551 transitions. [2022-11-16 11:37:51,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8957162921348315 [2022-11-16 11:37:51,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2551 transitions. [2022-11-16 11:37:51,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2551 transitions. [2022-11-16 11:37:51,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:51,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2551 transitions. [2022-11-16 11:37:51,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 318.875) internal successors, (2551), 8 states have internal predecessors, (2551), 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) [2022-11-16 11:37:51,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 356.0) internal successors, (3204), 9 states have internal predecessors, (3204), 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) [2022-11-16 11:37:51,943 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 356.0) internal successors, (3204), 9 states have internal predecessors, (3204), 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) [2022-11-16 11:37:51,944 INFO L175 Difference]: Start difference. First operand has 421 places, 466 transitions, 2336 flow. Second operand 8 states and 2551 transitions. [2022-11-16 11:37:51,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 516 transitions, 2644 flow [2022-11-16 11:37:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 516 transitions, 2600 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:52,051 INFO L231 Difference]: Finished difference. Result has 429 places, 478 transitions, 2405 flow [2022-11-16 11:37:52,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2405, PETRI_PLACES=429, PETRI_TRANSITIONS=478} [2022-11-16 11:37:52,053 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 105 predicate places. [2022-11-16 11:37:52,053 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 478 transitions, 2405 flow [2022-11-16 11:37:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-16 11:37:52,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:52,054 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:52,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:37:52,262 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:37:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1748653475, now seen corresponding path program 5 times [2022-11-16 11:37:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:52,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262325617] [2022-11-16 11:37:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:37:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:52,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262325617] [2022-11-16 11:37:52,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262325617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:52,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:52,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:37:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834865600] [2022-11-16 11:37:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:52,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:37:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:37:52,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:37:52,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-16 11:37:52,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 478 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-16 11:37:52,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:52,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-16 11:37:52,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:01,352 INFO L130 PetriNetUnfolder]: 4717/24010 cut-off events. [2022-11-16 11:38:01,352 INFO L131 PetriNetUnfolder]: For 25746/26600 co-relation queries the response was YES. [2022-11-16 11:38:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46820 conditions, 24010 events. 4717/24010 cut-off events. For 25746/26600 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 301644 event pairs, 1749 based on Foata normal form. 437/23255 useless extension candidates. Maximal degree in co-relation 46768. Up to 3741 conditions per place. [2022-11-16 11:38:01,864 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 72 selfloop transitions, 15 changer transitions 3/529 dead transitions. [2022-11-16 11:38:01,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 529 transitions, 2812 flow [2022-11-16 11:38:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:38:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:38:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1926 transitions. [2022-11-16 11:38:01,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.901685393258427 [2022-11-16 11:38:01,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1926 transitions. [2022-11-16 11:38:01,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1926 transitions. [2022-11-16 11:38:01,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:01,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1926 transitions. [2022-11-16 11:38:01,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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) [2022-11-16 11:38:01,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-16 11:38:01,879 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-16 11:38:01,879 INFO L175 Difference]: Start difference. First operand has 429 places, 478 transitions, 2405 flow. Second operand 6 states and 1926 transitions. [2022-11-16 11:38:01,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 529 transitions, 2812 flow [2022-11-16 11:38:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 529 transitions, 2802 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-16 11:38:02,147 INFO L231 Difference]: Finished difference. Result has 437 places, 485 transitions, 2502 flow [2022-11-16 11:38:02,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2502, PETRI_PLACES=437, PETRI_TRANSITIONS=485} [2022-11-16 11:38:02,148 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 113 predicate places. [2022-11-16 11:38:02,148 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 485 transitions, 2502 flow [2022-11-16 11:38:02,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-16 11:38:02,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:02,150 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:02,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:38:02,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:38:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1715598379, now seen corresponding path program 6 times [2022-11-16 11:38:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641534365] [2022-11-16 11:38:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:38:02,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:02,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641534365] [2022-11-16 11:38:02,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641534365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:38:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502686372] [2022-11-16 11:38:02,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:38:02,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:02,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:38:02,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:38:02,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:38:02,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-16 11:38:02,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:38:02,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:38:02,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-16 11:38:03,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:38:03,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502686372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:03,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:38:03,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-16 11:38:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054117665] [2022-11-16 11:38:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:38:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:38:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:38:03,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-16 11:38:03,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 485 transitions, 2502 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:38:03,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:03,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-16 11:38:03,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:38:12,867 INFO L130 PetriNetUnfolder]: 3752/26473 cut-off events. [2022-11-16 11:38:12,867 INFO L131 PetriNetUnfolder]: For 36062/37719 co-relation queries the response was YES. [2022-11-16 11:38:13,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49166 conditions, 26473 events. 3752/26473 cut-off events. For 36062/37719 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 342704 event pairs, 1092 based on Foata normal form. 396/25657 useless extension candidates. Maximal degree in co-relation 49110. Up to 3711 conditions per place. [2022-11-16 11:38:13,812 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 167 selfloop transitions, 63 changer transitions 0/576 dead transitions. [2022-11-16 11:38:13,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 576 transitions, 3604 flow [2022-11-16 11:38:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:38:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:38:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3413 transitions. [2022-11-16 11:38:13,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8715526046986721 [2022-11-16 11:38:13,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3413 transitions. [2022-11-16 11:38:13,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3413 transitions. [2022-11-16 11:38:13,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:38:13,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3413 transitions. [2022-11-16 11:38:13,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.27272727272725) internal successors, (3413), 11 states have internal predecessors, (3413), 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) [2022-11-16 11:38:13,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:38:13,830 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-16 11:38:13,830 INFO L175 Difference]: Start difference. First operand has 437 places, 485 transitions, 2502 flow. Second operand 11 states and 3413 transitions. [2022-11-16 11:38:13,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 576 transitions, 3604 flow [2022-11-16 11:38:14,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 576 transitions, 3591 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 11:38:14,028 INFO L231 Difference]: Finished difference. Result has 452 places, 507 transitions, 2982 flow [2022-11-16 11:38:14,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2982, PETRI_PLACES=452, PETRI_TRANSITIONS=507} [2022-11-16 11:38:14,029 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 128 predicate places. [2022-11-16 11:38:14,029 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 507 transitions, 2982 flow [2022-11-16 11:38:14,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-16 11:38:14,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:38:14,030 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:14,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:14,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0d62585-9a23-4136-943c-2b636dace30a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:38:14,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:38:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1533410843, now seen corresponding path program 7 times [2022-11-16 11:38:14,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:38:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543134554] [2022-11-16 11:38:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:38:14,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:38:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:38:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 11:38:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:38:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543134554] [2022-11-16 11:38:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543134554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:38:14,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:38:14,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:38:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534191850] [2022-11-16 11:38:14,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:38:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:38:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:38:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:38:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:38:14,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-16 11:38:14,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 507 transitions, 2982 flow. Second operand has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-16 11:38:14,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:38:14,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-16 11:38:14,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand