./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro --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 c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --- 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-8393723 [2022-11-18 19:59:03,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:59:03,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:59:03,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:59:03,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:59:03,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:59:03,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:59:03,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:59:03,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:59:03,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:59:03,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:59:03,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:59:03,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:59:03,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:59:03,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:59:03,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:59:03,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:59:03,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:59:03,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:59:03,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:59:03,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:59:03,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:59:03,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:59:03,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:59:03,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:59:03,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:59:03,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:59:03,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:59:03,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:59:03,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:59:03,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:59:03,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:59:03,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:59:03,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:59:03,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:59:03,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:59:03,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:59:03,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:59:03,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:59:03,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:59:03,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:59:03,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:59:03,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:59:03,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:59:03,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:59:03,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:59:03,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:59:03,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:59:03,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:59:03,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:59:03,466 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:59:03,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:59:03,468 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:59:03,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:59:03,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:59:03,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:59:03,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:59:03,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:59:03,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:59:03,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:59:03,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:59:03,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:59:03,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:59:03,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:59:03,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:59:03,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:59:03,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:03,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:59:03,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:59:03,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:59:03,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:59:03,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:59:03,476 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:59:03,476 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:59:03,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:59:03,477 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_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 [2022-11-18 19:59:03,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:59:03,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:59:03,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:59:03,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:59:03,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:59:03,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/mult-dist.wvr.c [2022-11-18 19:59:03,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/data/5602197fe/182c9c9bf29c40458af4e62ce51d163c/FLAGf1da81cb6 [2022-11-18 19:59:04,630 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:59:04,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/sv-benchmarks/c/weaver/mult-dist.wvr.c [2022-11-18 19:59:04,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/data/5602197fe/182c9c9bf29c40458af4e62ce51d163c/FLAGf1da81cb6 [2022-11-18 19:59:04,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/data/5602197fe/182c9c9bf29c40458af4e62ce51d163c [2022-11-18 19:59:04,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:59:04,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:59:04,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:04,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:59:04,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:59:04,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:04" (1/1) ... [2022-11-18 19:59:04,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d28d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:04, skipping insertion in model container [2022-11-18 19:59:04,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:04" (1/1) ... [2022-11-18 19:59:05,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:59:05,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:59:05,254 WARN L234 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_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/sv-benchmarks/c/weaver/mult-dist.wvr.c[2116,2129] [2022-11-18 19:59:05,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:05,270 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:59:05,296 WARN L234 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_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/sv-benchmarks/c/weaver/mult-dist.wvr.c[2116,2129] [2022-11-18 19:59:05,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:05,315 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:59:05,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05 WrapperNode [2022-11-18 19:59:05,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:05,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:05,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:59:05,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:59:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,360 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-18 19:59:05,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:05,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:59:05,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:59:05,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:59:05,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:59:05,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:59:05,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:59:05,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:59:05,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (1/1) ... [2022-11-18 19:59:05,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:05,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:05,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:59:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:59:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:59:05,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:59:05,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:59:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:59:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:59:05,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:59:05,490 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:59:05,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:59:05,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:59:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:59:05,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:59:05,494 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:59:05,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:59:05,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:59:05,862 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:59:05,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:59:05,871 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:59:05,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:59:05 BoogieIcfgContainer [2022-11-18 19:59:05,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:59:05,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:59:05,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:59:05,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:59:05,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:59:04" (1/3) ... [2022-11-18 19:59:05,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05f757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:59:05, skipping insertion in model container [2022-11-18 19:59:05,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:05" (2/3) ... [2022-11-18 19:59:05,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05f757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:59:05, skipping insertion in model container [2022-11-18 19:59:05,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:59:05" (3/3) ... [2022-11-18 19:59:05,902 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2022-11-18 19:59:05,921 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:59:05,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:59:05,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:59:05,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:59:06,103 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:59:06,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 107 transitions, 238 flow [2022-11-18 19:59:06,280 INFO L130 PetriNetUnfolder]: 7/104 cut-off events. [2022-11-18 19:59:06,281 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:59:06,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 7/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2022-11-18 19:59:06,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 107 transitions, 238 flow [2022-11-18 19:59:06,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 204 flow [2022-11-18 19:59:06,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:59:06,319 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;@7f93b67f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:59:06,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 19:59:06,351 INFO L130 PetriNetUnfolder]: 7/92 cut-off events. [2022-11-18 19:59:06,351 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:59:06,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:06,352 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] [2022-11-18 19:59:06,353 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)] === [2022-11-18 19:59:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 683718309, now seen corresponding path program 1 times [2022-11-18 19:59:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985613694] [2022-11-18 19:59:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:06,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:06,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985613694] [2022-11-18 19:59:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985613694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:06,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:06,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:59:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035731269] [2022-11-18 19:59:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:59:06,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:59:06,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:59:06,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 107 [2022-11-18 19:59:06,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 204 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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) [2022-11-18 19:59:06,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:06,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 107 [2022-11-18 19:59:06,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:06,771 INFO L130 PetriNetUnfolder]: 3/89 cut-off events. [2022-11-18 19:59:06,771 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-18 19:59:06,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 89 events. 3/89 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 10/95 useless extension candidates. Maximal degree in co-relation 66. Up to 7 conditions per place. [2022-11-18 19:59:06,774 INFO L137 encePairwiseOnDemand]: 103/107 looper letters, 6 selfloop transitions, 0 changer transitions 1/89 dead transitions. [2022-11-18 19:59:06,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 208 flow [2022-11-18 19:59:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:59:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:59:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2022-11-18 19:59:06,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2022-11-18 19:59:06,809 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2022-11-18 19:59:06,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2022-11-18 19:59:06,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:06,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2022-11-18 19:59:06,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2022-11-18 19:59:06,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-11-18 19:59:06,842 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2022-11-18 19:59:06,845 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 204 flow. Second operand 2 states and 202 transitions. [2022-11-18 19:59:06,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 208 flow [2022-11-18 19:59:06,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:59:06,866 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 182 flow [2022-11-18 19:59:06,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2022-11-18 19:59:06,880 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -5 predicate places. [2022-11-18 19:59:06,880 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 182 flow [2022-11-18 19:59:06,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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) [2022-11-18 19:59:06,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:06,881 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] [2022-11-18 19:59:06,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:59:06,882 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)] === [2022-11-18 19:59:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1955065448, now seen corresponding path program 1 times [2022-11-18 19:59:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340344238] [2022-11-18 19:59:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:08,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340344238] [2022-11-18 19:59:08,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340344238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:08,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:08,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:59:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411987942] [2022-11-18 19:59:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:59:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:59:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:59:08,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 107 [2022-11-18 19:59:08,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2022-11-18 19:59:08,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:08,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 107 [2022-11-18 19:59:08,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:08,363 INFO L130 PetriNetUnfolder]: 49/302 cut-off events. [2022-11-18 19:59:08,370 INFO L131 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2022-11-18 19:59:08,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 302 events. 49/302 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1129 event pairs, 3 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 406. Up to 47 conditions per place. [2022-11-18 19:59:08,374 INFO L137 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 9 changer transitions 4/120 dead transitions. [2022-11-18 19:59:08,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 120 transitions, 354 flow [2022-11-18 19:59:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:59:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:59:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 644 transitions. [2022-11-18 19:59:08,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2022-11-18 19:59:08,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 644 transitions. [2022-11-18 19:59:08,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 644 transitions. [2022-11-18 19:59:08,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:08,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 644 transitions. [2022-11-18 19:59:08,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2022-11-18 19:59:08,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-11-18 19:59:08,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2022-11-18 19:59:08,395 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 182 flow. Second operand 7 states and 644 transitions. [2022-11-18 19:59:08,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 120 transitions, 354 flow [2022-11-18 19:59:08,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:08,399 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 235 flow [2022-11-18 19:59:08,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2022-11-18 19:59:08,400 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 4 predicate places. [2022-11-18 19:59:08,401 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 235 flow [2022-11-18 19:59:08,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 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) [2022-11-18 19:59:08,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:08,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:08,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:59:08,402 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)] === [2022-11-18 19:59:08,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -804793571, now seen corresponding path program 1 times [2022-11-18 19:59:08,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:08,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726955617] [2022-11-18 19:59:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:08,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726955617] [2022-11-18 19:59:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726955617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:08,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:59:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452424427] [2022-11-18 19:59:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:59:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:59:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:59:08,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 19:59:08,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 19:59:08,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:08,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 19:59:08,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:09,744 INFO L130 PetriNetUnfolder]: 1474/3160 cut-off events. [2022-11-18 19:59:09,745 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 19:59:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 3160 events. 1474/3160 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23726 event pairs, 695 based on Foata normal form. 0/2602 useless extension candidates. Maximal degree in co-relation 5845. Up to 1333 conditions per place. [2022-11-18 19:59:09,780 INFO L137 encePairwiseOnDemand]: 96/107 looper letters, 61 selfloop transitions, 9 changer transitions 5/144 dead transitions. [2022-11-18 19:59:09,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 497 flow [2022-11-18 19:59:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 770 transitions. [2022-11-18 19:59:09,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7995846313603323 [2022-11-18 19:59:09,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 770 transitions. [2022-11-18 19:59:09,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 770 transitions. [2022-11-18 19:59:09,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:09,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 770 transitions. [2022-11-18 19:59:09,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 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) [2022-11-18 19:59:09,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:09,792 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:09,793 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 235 flow. Second operand 9 states and 770 transitions. [2022-11-18 19:59:09,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 497 flow [2022-11-18 19:59:09,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 144 transitions, 493 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 19:59:09,799 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 285 flow [2022-11-18 19:59:09,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2022-11-18 19:59:09,801 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 13 predicate places. [2022-11-18 19:59:09,801 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 285 flow [2022-11-18 19:59:09,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 19:59:09,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:09,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:59:09,803 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)] === [2022-11-18 19:59:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1878828297, now seen corresponding path program 2 times [2022-11-18 19:59:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318437066] [2022-11-18 19:59:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:10,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:10,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318437066] [2022-11-18 19:59:10,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318437066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:10,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717624742] [2022-11-18 19:59:10,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:10,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:10,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:10,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:59:10,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:10,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:10,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:11,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:19,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717624742] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:19,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:19,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2022-11-18 19:59:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413907277] [2022-11-18 19:59:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:19,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:19,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:59:19,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 19:59:19,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:19,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:19,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 19:59:19,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:20,554 INFO L130 PetriNetUnfolder]: 1531/3551 cut-off events. [2022-11-18 19:59:20,555 INFO L131 PetriNetUnfolder]: For 1918/2007 co-relation queries the response was YES. [2022-11-18 19:59:20,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7859 conditions, 3551 events. 1531/3551 cut-off events. For 1918/2007 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 29383 event pairs, 285 based on Foata normal form. 5/3489 useless extension candidates. Maximal degree in co-relation 7847. Up to 465 conditions per place. [2022-11-18 19:59:20,602 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 101 selfloop transitions, 26 changer transitions 1/200 dead transitions. [2022-11-18 19:59:20,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 895 flow [2022-11-18 19:59:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:59:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:59:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-11-18 19:59:20,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570093457943925 [2022-11-18 19:59:20,615 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-11-18 19:59:20,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-11-18 19:59:20,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:20,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-11-18 19:59:20,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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) [2022-11-18 19:59:20,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:20,625 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:20,625 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 285 flow. Second operand 10 states and 917 transitions. [2022-11-18 19:59:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 895 flow [2022-11-18 19:59:20,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 200 transitions, 864 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-18 19:59:20,641 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 501 flow [2022-11-18 19:59:20,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=501, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2022-11-18 19:59:20,644 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2022-11-18 19:59:20,644 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 501 flow [2022-11-18 19:59:20,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:20,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:20,646 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:20,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:20,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:20,853 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)] === [2022-11-18 19:59:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:20,853 INFO L85 PathProgramCache]: Analyzing trace with hash -260148067, now seen corresponding path program 3 times [2022-11-18 19:59:20,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:20,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054749509] [2022-11-18 19:59:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:20,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:21,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054749509] [2022-11-18 19:59:21,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054749509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:21,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026971960] [2022-11-18 19:59:21,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:59:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:21,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:21,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:21,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:59:21,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:59:21,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:21,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:22,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:25,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026971960] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:25,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:25,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 12 [2022-11-18 19:59:25,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769218392] [2022-11-18 19:59:25,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:25,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:25,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:59:25,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 19:59:25,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 501 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:25,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:25,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 19:59:25,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:27,028 INFO L130 PetriNetUnfolder]: 2154/4611 cut-off events. [2022-11-18 19:59:27,029 INFO L131 PetriNetUnfolder]: For 8189/8279 co-relation queries the response was YES. [2022-11-18 19:59:27,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13254 conditions, 4611 events. 2154/4611 cut-off events. For 8189/8279 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 39164 event pairs, 501 based on Foata normal form. 4/4447 useless extension candidates. Maximal degree in co-relation 13235. Up to 928 conditions per place. [2022-11-18 19:59:27,091 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 118 selfloop transitions, 37 changer transitions 1/228 dead transitions. [2022-11-18 19:59:27,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 228 transitions, 1400 flow [2022-11-18 19:59:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-11-18 19:59:27,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535825545171339 [2022-11-18 19:59:27,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-11-18 19:59:27,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-11-18 19:59:27,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:27,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-11-18 19:59:27,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 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) [2022-11-18 19:59:27,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:27,106 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:27,107 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 501 flow. Second operand 9 states and 822 transitions. [2022-11-18 19:59:27,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 228 transitions, 1400 flow [2022-11-18 19:59:27,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 228 transitions, 1394 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:27,157 INFO L231 Difference]: Finished difference. Result has 136 places, 151 transitions, 859 flow [2022-11-18 19:59:27,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=136, PETRI_TRANSITIONS=151} [2022-11-18 19:59:27,161 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 40 predicate places. [2022-11-18 19:59:27,162 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 151 transitions, 859 flow [2022-11-18 19:59:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:27,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:27,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:27,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:27,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:27,370 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)] === [2022-11-18 19:59:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1004116959, now seen corresponding path program 4 times [2022-11-18 19:59:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644971795] [2022-11-18 19:59:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:27,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644971795] [2022-11-18 19:59:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644971795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:27,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:27,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:59:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057795008] [2022-11-18 19:59:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:59:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:59:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:59:27,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 19:59:27,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 151 transitions, 859 flow. Second operand has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 19:59:27,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:27,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 19:59:27,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:29,325 INFO L130 PetriNetUnfolder]: 3450/7656 cut-off events. [2022-11-18 19:59:29,326 INFO L131 PetriNetUnfolder]: For 19931/19936 co-relation queries the response was YES. [2022-11-18 19:59:29,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23573 conditions, 7656 events. 3450/7656 cut-off events. For 19931/19936 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 70297 event pairs, 1270 based on Foata normal form. 5/7530 useless extension candidates. Maximal degree in co-relation 23547. Up to 2301 conditions per place. [2022-11-18 19:59:29,429 INFO L137 encePairwiseOnDemand]: 95/107 looper letters, 135 selfloop transitions, 39 changer transitions 5/248 dead transitions. [2022-11-18 19:59:29,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 248 transitions, 1882 flow [2022-11-18 19:59:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:59:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:59:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 849 transitions. [2022-11-18 19:59:29,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7934579439252336 [2022-11-18 19:59:29,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 849 transitions. [2022-11-18 19:59:29,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 849 transitions. [2022-11-18 19:59:29,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:29,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 849 transitions. [2022-11-18 19:59:29,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 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) [2022-11-18 19:59:29,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:29,441 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:29,441 INFO L175 Difference]: Start difference. First operand has 136 places, 151 transitions, 859 flow. Second operand 10 states and 849 transitions. [2022-11-18 19:59:29,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 248 transitions, 1882 flow [2022-11-18 19:59:29,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 248 transitions, 1864 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-18 19:59:29,521 INFO L231 Difference]: Finished difference. Result has 150 places, 162 transitions, 1116 flow [2022-11-18 19:59:29,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1116, PETRI_PLACES=150, PETRI_TRANSITIONS=162} [2022-11-18 19:59:29,522 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-11-18 19:59:29,522 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 162 transitions, 1116 flow [2022-11-18 19:59:29,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 19:59:29,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:29,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:59:29,524 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)] === [2022-11-18 19:59:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1061181401, now seen corresponding path program 5 times [2022-11-18 19:59:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:29,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421505820] [2022-11-18 19:59:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421505820] [2022-11-18 19:59:29,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421505820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252632154] [2022-11-18 19:59:29,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:59:29,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:29,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:59:30,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:30,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:30,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:59:30,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:30,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:32,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252632154] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:32,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:32,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 10] total 17 [2022-11-18 19:59:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125240440] [2022-11-18 19:59:32,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:59:32,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 19:59:32,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 162 transitions, 1116 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:32,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:32,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 19:59:32,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:34,126 INFO L130 PetriNetUnfolder]: 2350/5186 cut-off events. [2022-11-18 19:59:34,126 INFO L131 PetriNetUnfolder]: For 21445/21593 co-relation queries the response was YES. [2022-11-18 19:59:34,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18302 conditions, 5186 events. 2350/5186 cut-off events. For 21445/21593 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 46002 event pairs, 588 based on Foata normal form. 4/5039 useless extension candidates. Maximal degree in co-relation 18270. Up to 1031 conditions per place. [2022-11-18 19:59:34,203 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 125 selfloop transitions, 44 changer transitions 2/243 dead transitions. [2022-11-18 19:59:34,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 243 transitions, 1948 flow [2022-11-18 19:59:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:34,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2022-11-18 19:59:34,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556593977154725 [2022-11-18 19:59:34,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2022-11-18 19:59:34,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2022-11-18 19:59:34,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:34,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2022-11-18 19:59:34,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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) [2022-11-18 19:59:34,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:34,217 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:34,217 INFO L175 Difference]: Start difference. First operand has 150 places, 162 transitions, 1116 flow. Second operand 9 states and 824 transitions. [2022-11-18 19:59:34,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 243 transitions, 1948 flow [2022-11-18 19:59:34,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 243 transitions, 1891 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-11-18 19:59:34,304 INFO L231 Difference]: Finished difference. Result has 156 places, 168 transitions, 1253 flow [2022-11-18 19:59:34,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1253, PETRI_PLACES=156, PETRI_TRANSITIONS=168} [2022-11-18 19:59:34,305 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 60 predicate places. [2022-11-18 19:59:34,305 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 168 transitions, 1253 flow [2022-11-18 19:59:34,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:34,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:34,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:34,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:34,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:59:34,513 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)] === [2022-11-18 19:59:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1293172563, now seen corresponding path program 6 times [2022-11-18 19:59:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366181081] [2022-11-18 19:59:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:34,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366181081] [2022-11-18 19:59:34,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366181081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471163487] [2022-11-18 19:59:34,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:59:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:34,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:59:35,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:59:35,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:35,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:35,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:36,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:42,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471163487] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:42,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:42,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 13 [2022-11-18 19:59:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121133329] [2022-11-18 19:59:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:42,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:42,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:59:42,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 19:59:42,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 168 transitions, 1253 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:42,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:42,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 19:59:42,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:44,127 INFO L130 PetriNetUnfolder]: 2322/5182 cut-off events. [2022-11-18 19:59:44,127 INFO L131 PetriNetUnfolder]: For 24629/24778 co-relation queries the response was YES. [2022-11-18 19:59:44,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18733 conditions, 5182 events. 2322/5182 cut-off events. For 24629/24778 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 46117 event pairs, 529 based on Foata normal form. 5/5032 useless extension candidates. Maximal degree in co-relation 18698. Up to 990 conditions per place. [2022-11-18 19:59:44,196 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 116 selfloop transitions, 51 changer transitions 2/241 dead transitions. [2022-11-18 19:59:44,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 241 transitions, 2064 flow [2022-11-18 19:59:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:59:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-11-18 19:59:44,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535825545171339 [2022-11-18 19:59:44,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-11-18 19:59:44,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-11-18 19:59:44,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:44,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-11-18 19:59:44,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 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) [2022-11-18 19:59:44,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:44,206 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 19:59:44,206 INFO L175 Difference]: Start difference. First operand has 156 places, 168 transitions, 1253 flow. Second operand 9 states and 822 transitions. [2022-11-18 19:59:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 241 transitions, 2064 flow [2022-11-18 19:59:44,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 241 transitions, 2032 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-18 19:59:44,289 INFO L231 Difference]: Finished difference. Result has 165 places, 171 transitions, 1404 flow [2022-11-18 19:59:44,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1404, PETRI_PLACES=165, PETRI_TRANSITIONS=171} [2022-11-18 19:59:44,291 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 69 predicate places. [2022-11-18 19:59:44,291 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 171 transitions, 1404 flow [2022-11-18 19:59:44,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:44,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:44,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:44,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:44,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:59:44,499 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)] === [2022-11-18 19:59:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1343872477, now seen corresponding path program 1 times [2022-11-18 19:59:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246213427] [2022-11-18 19:59:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:44,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:44,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246213427] [2022-11-18 19:59:44,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246213427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:44,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541262730] [2022-11-18 19:59:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:44,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:44,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:44,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:44,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:59:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:44,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:44,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:45,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541262730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:45,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:45,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-11-18 19:59:45,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65144607] [2022-11-18 19:59:45,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:45,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:59:45,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:59:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:59:45,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 19:59:45,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 171 transitions, 1404 flow. Second operand has 14 states, 14 states have (on average 79.42857142857143) internal successors, (1112), 14 states have internal predecessors, (1112), 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) [2022-11-18 19:59:45,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:45,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 19:59:45,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:47,689 INFO L130 PetriNetUnfolder]: 4583/9693 cut-off events. [2022-11-18 19:59:47,690 INFO L131 PetriNetUnfolder]: For 47871/47871 co-relation queries the response was YES. [2022-11-18 19:59:47,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35187 conditions, 9693 events. 4583/9693 cut-off events. For 47871/47871 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 90341 event pairs, 640 based on Foata normal form. 29/9592 useless extension candidates. Maximal degree in co-relation 35149. Up to 1829 conditions per place. [2022-11-18 19:59:47,808 INFO L137 encePairwiseOnDemand]: 94/107 looper letters, 269 selfloop transitions, 91 changer transitions 5/434 dead transitions. [2022-11-18 19:59:47,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 434 transitions, 4566 flow [2022-11-18 19:59:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:59:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:59:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1399 transitions. [2022-11-18 19:59:47,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171728971962616 [2022-11-18 19:59:47,819 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1399 transitions. [2022-11-18 19:59:47,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1399 transitions. [2022-11-18 19:59:47,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:47,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1399 transitions. [2022-11-18 19:59:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.4375) internal successors, (1399), 16 states have internal predecessors, (1399), 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) [2022-11-18 19:59:47,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2022-11-18 19:59:47,834 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2022-11-18 19:59:47,834 INFO L175 Difference]: Start difference. First operand has 165 places, 171 transitions, 1404 flow. Second operand 16 states and 1399 transitions. [2022-11-18 19:59:47,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 434 transitions, 4566 flow [2022-11-18 19:59:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 434 transitions, 4430 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 19:59:48,048 INFO L231 Difference]: Finished difference. Result has 187 places, 235 transitions, 2297 flow [2022-11-18 19:59:48,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2297, PETRI_PLACES=187, PETRI_TRANSITIONS=235} [2022-11-18 19:59:48,049 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 91 predicate places. [2022-11-18 19:59:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 235 transitions, 2297 flow [2022-11-18 19:59:48,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 79.42857142857143) internal successors, (1112), 14 states have internal predecessors, (1112), 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) [2022-11-18 19:59:48,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:48,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:48,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:48,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:48,258 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)] === [2022-11-18 19:59:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1028034267, now seen corresponding path program 2 times [2022-11-18 19:59:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438021913] [2022-11-18 19:59:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:48,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438021913] [2022-11-18 19:59:48,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438021913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370249088] [2022-11-18 19:59:48,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:48,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:48,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:48,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:59:48,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:48,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:48,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:59:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:49,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:53,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370249088] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:53,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:53,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 10] total 16 [2022-11-18 19:59:53,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850374820] [2022-11-18 19:59:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:53,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:53,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:59:53,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 19:59:53,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 235 transitions, 2297 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:53,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:53,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 19:59:53,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:55,277 INFO L130 PetriNetUnfolder]: 3970/9548 cut-off events. [2022-11-18 19:59:55,277 INFO L131 PetriNetUnfolder]: For 57979/58361 co-relation queries the response was YES. [2022-11-18 19:59:55,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37207 conditions, 9548 events. 3970/9548 cut-off events. For 57979/58361 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 96143 event pairs, 771 based on Foata normal form. 204/9529 useless extension candidates. Maximal degree in co-relation 37158. Up to 1130 conditions per place. [2022-11-18 19:59:55,399 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 269 selfloop transitions, 74 changer transitions 2/449 dead transitions. [2022-11-18 19:59:55,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 449 transitions, 5218 flow [2022-11-18 19:59:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:59:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:59:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 915 transitions. [2022-11-18 19:59:55,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8551401869158879 [2022-11-18 19:59:55,404 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 915 transitions. [2022-11-18 19:59:55,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 915 transitions. [2022-11-18 19:59:55,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:55,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 915 transitions. [2022-11-18 19:59:55,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.5) internal successors, (915), 10 states have internal predecessors, (915), 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) [2022-11-18 19:59:55,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:55,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 19:59:55,411 INFO L175 Difference]: Start difference. First operand has 187 places, 235 transitions, 2297 flow. Second operand 10 states and 915 transitions. [2022-11-18 19:59:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 449 transitions, 5218 flow [2022-11-18 19:59:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 449 transitions, 5166 flow, removed 25 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:55,780 INFO L231 Difference]: Finished difference. Result has 204 places, 288 transitions, 3251 flow [2022-11-18 19:59:55,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3251, PETRI_PLACES=204, PETRI_TRANSITIONS=288} [2022-11-18 19:59:55,781 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 108 predicate places. [2022-11-18 19:59:55,781 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 288 transitions, 3251 flow [2022-11-18 19:59:55,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 19:59:55,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:55,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:55,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 19:59:55,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:55,989 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)] === [2022-11-18 19:59:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 882762453, now seen corresponding path program 7 times [2022-11-18 19:59:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:55,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069534566] [2022-11-18 19:59:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:56,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069534566] [2022-11-18 19:59:56,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069534566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678152497] [2022-11-18 19:59:56,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:59:56,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:56,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:56,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:56,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:59:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:56,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:59:56,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:57,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:03,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678152497] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:00:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 14 [2022-11-18 20:00:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009471893] [2022-11-18 20:00:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:00:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:00:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:00:03,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 20:00:03,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 288 transitions, 3251 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 20:00:03,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:03,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 20:00:03,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:05,288 INFO L130 PetriNetUnfolder]: 4081/9118 cut-off events. [2022-11-18 20:00:05,288 INFO L131 PetriNetUnfolder]: For 78778/79193 co-relation queries the response was YES. [2022-11-18 20:00:05,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40795 conditions, 9118 events. 4081/9118 cut-off events. For 78778/79193 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 89401 event pairs, 870 based on Foata normal form. 117/8959 useless extension candidates. Maximal degree in co-relation 40737. Up to 1632 conditions per place. [2022-11-18 20:00:05,407 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 171 selfloop transitions, 124 changer transitions 2/382 dead transitions. [2022-11-18 20:00:05,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 382 transitions, 4757 flow [2022-11-18 20:00:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:00:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:00:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-11-18 20:00:05,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8535825545171339 [2022-11-18 20:00:05,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-11-18 20:00:05,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-11-18 20:00:05,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:05,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-11-18 20:00:05,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 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) [2022-11-18 20:00:05,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 20:00:05,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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) [2022-11-18 20:00:05,420 INFO L175 Difference]: Start difference. First operand has 204 places, 288 transitions, 3251 flow. Second operand 9 states and 822 transitions. [2022-11-18 20:00:05,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 382 transitions, 4757 flow [2022-11-18 20:00:05,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 382 transitions, 4511 flow, removed 94 selfloop flow, removed 2 redundant places. [2022-11-18 20:00:05,936 INFO L231 Difference]: Finished difference. Result has 213 places, 296 transitions, 3563 flow [2022-11-18 20:00:05,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3563, PETRI_PLACES=213, PETRI_TRANSITIONS=296} [2022-11-18 20:00:05,938 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 117 predicate places. [2022-11-18 20:00:05,938 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 296 transitions, 3563 flow [2022-11-18 20:00:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 20:00:05,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:05,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:05,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:06,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:00:06,152 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)] === [2022-11-18 20:00:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1307255887, now seen corresponding path program 8 times [2022-11-18 20:00:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:06,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881318528] [2022-11-18 20:00:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:06,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881318528] [2022-11-18 20:00:06,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881318528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:00:06,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:00:06,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:00:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930022022] [2022-11-18 20:00:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:00:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:00:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:00:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:00:06,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 20:00:06,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 296 transitions, 3563 flow. Second operand has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 20:00:06,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:06,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 20:00:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:09,396 INFO L130 PetriNetUnfolder]: 6487/13891 cut-off events. [2022-11-18 20:00:09,396 INFO L131 PetriNetUnfolder]: For 117355/117396 co-relation queries the response was YES. [2022-11-18 20:00:09,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60387 conditions, 13891 events. 6487/13891 cut-off events. For 117355/117396 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 138228 event pairs, 2303 based on Foata normal form. 4/13516 useless extension candidates. Maximal degree in co-relation 60327. Up to 3977 conditions per place. [2022-11-18 20:00:09,598 INFO L137 encePairwiseOnDemand]: 97/107 looper letters, 302 selfloop transitions, 101 changer transitions 6/478 dead transitions. [2022-11-18 20:00:09,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 478 transitions, 6579 flow [2022-11-18 20:00:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:00:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:00:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 700 transitions. [2022-11-18 20:00:09,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177570093457944 [2022-11-18 20:00:09,602 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 700 transitions. [2022-11-18 20:00:09,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 700 transitions. [2022-11-18 20:00:09,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:09,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 700 transitions. [2022-11-18 20:00:09,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 87.5) internal successors, (700), 8 states have internal predecessors, (700), 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) [2022-11-18 20:00:09,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 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) [2022-11-18 20:00:09,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 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) [2022-11-18 20:00:09,608 INFO L175 Difference]: Start difference. First operand has 213 places, 296 transitions, 3563 flow. Second operand 8 states and 700 transitions. [2022-11-18 20:00:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 478 transitions, 6579 flow [2022-11-18 20:00:10,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 478 transitions, 6303 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-18 20:00:10,329 INFO L231 Difference]: Finished difference. Result has 221 places, 338 transitions, 4589 flow [2022-11-18 20:00:10,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4589, PETRI_PLACES=221, PETRI_TRANSITIONS=338} [2022-11-18 20:00:10,330 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 125 predicate places. [2022-11-18 20:00:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 338 transitions, 4589 flow [2022-11-18 20:00:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 20:00:10,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:10,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:00:10,332 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)] === [2022-11-18 20:00:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1922419871, now seen corresponding path program 9 times [2022-11-18 20:00:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:10,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990419002] [2022-11-18 20:00:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:10,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:10,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:10,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990419002] [2022-11-18 20:00:10,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990419002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:10,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568898436] [2022-11-18 20:00:10,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:00:10,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:10,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:10,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:00:10,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:00:10,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:00:10,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:00:10,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:11,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:32,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568898436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:32,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:32,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 16 [2022-11-18 20:00:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727272629] [2022-11-18 20:00:32,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:32,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:00:32,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:00:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=176, Unknown=9, NotChecked=0, Total=240 [2022-11-18 20:00:32,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 20:00:32,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 338 transitions, 4589 flow. Second operand has 16 states, 16 states have (on average 79.5) internal successors, (1272), 16 states have internal predecessors, (1272), 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) [2022-11-18 20:00:32,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:32,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 20:00:32,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:00:35,200 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296))) (and (let ((.cse0 (* 4294967295 c_~a~0))) (< (* (div (+ .cse0 .cse1) 4294967296) 4294967296) .cse0)) (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse2 (* 4294967295 aux_mod_~a~0_21))) (< (* 4294967296 (div (+ .cse1 .cse2) 4294967296)) .cse2)))))) is different from false [2022-11-18 20:00:37,898 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296))) (and (forall ((aux_mod_~a~0_21 Int)) (or (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (let ((.cse1 (* 4294967295 aux_mod_~a~0_21))) (< (* 4294967296 (div (+ .cse0 .cse1) 4294967296)) .cse1)))) (let ((.cse2 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse2 .cse0) 4294967296) 4294967296) (mod c_thread2Thread1of1ForFork2_~i~1 4294967296)) .cse2)))) is different from false [2022-11-18 20:00:42,134 INFO L130 PetriNetUnfolder]: 9684/19810 cut-off events. [2022-11-18 20:00:42,134 INFO L131 PetriNetUnfolder]: For 199774/199788 co-relation queries the response was YES. [2022-11-18 20:00:42,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92954 conditions, 19810 events. 9684/19810 cut-off events. For 199774/199788 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 197981 event pairs, 2481 based on Foata normal form. 29/19397 useless extension candidates. Maximal degree in co-relation 92891. Up to 10874 conditions per place. [2022-11-18 20:00:42,436 INFO L137 encePairwiseOnDemand]: 95/107 looper letters, 412 selfloop transitions, 253 changer transitions 0/734 dead transitions. [2022-11-18 20:00:42,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 734 transitions, 11167 flow [2022-11-18 20:00:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:00:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:00:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1569 transitions. [2022-11-18 20:00:42,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8146417445482866 [2022-11-18 20:00:42,441 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1569 transitions. [2022-11-18 20:00:42,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1569 transitions. [2022-11-18 20:00:42,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:00:42,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1569 transitions. [2022-11-18 20:00:42,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 87.16666666666667) internal successors, (1569), 18 states have internal predecessors, (1569), 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) [2022-11-18 20:00:42,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 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) [2022-11-18 20:00:42,452 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 107.0) internal successors, (2033), 19 states have internal predecessors, (2033), 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) [2022-11-18 20:00:42,453 INFO L175 Difference]: Start difference. First operand has 221 places, 338 transitions, 4589 flow. Second operand 18 states and 1569 transitions. [2022-11-18 20:00:42,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 734 transitions, 11167 flow [2022-11-18 20:00:43,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 734 transitions, 10985 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-11-18 20:00:43,701 INFO L231 Difference]: Finished difference. Result has 246 places, 564 transitions, 8691 flow [2022-11-18 20:00:43,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8691, PETRI_PLACES=246, PETRI_TRANSITIONS=564} [2022-11-18 20:00:43,703 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 150 predicate places. [2022-11-18 20:00:43,703 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 564 transitions, 8691 flow [2022-11-18 20:00:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.5) internal successors, (1272), 16 states have internal predecessors, (1272), 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) [2022-11-18 20:00:43,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:00:43,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:43,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:00:43,907 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)] === [2022-11-18 20:00:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2086666481, now seen corresponding path program 10 times [2022-11-18 20:00:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:43,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973772827] [2022-11-18 20:00:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973772827] [2022-11-18 20:00:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973772827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527632760] [2022-11-18 20:00:44,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:00:44,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:44,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:44,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:00:44,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:00:44,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:00:44,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:00:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:44,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:55,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527632760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:55,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:55,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 20 [2022-11-18 20:00:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332959333] [2022-11-18 20:00:55,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:00:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:00:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=281, Unknown=5, NotChecked=0, Total=380 [2022-11-18 20:00:55,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 107 [2022-11-18 20:00:55,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 564 transitions, 8691 flow. Second operand has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:00:55,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:00:55,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 107 [2022-11-18 20:00:55,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:09,778 INFO L130 PetriNetUnfolder]: 16656/34062 cut-off events. [2022-11-18 20:01:09,779 INFO L131 PetriNetUnfolder]: For 477601/477758 co-relation queries the response was YES. [2022-11-18 20:01:10,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197728 conditions, 34062 events. 16656/34062 cut-off events. For 477601/477758 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 364934 event pairs, 1582 based on Foata normal form. 88/33702 useless extension candidates. Maximal degree in co-relation 197654. Up to 6424 conditions per place. [2022-11-18 20:01:10,487 INFO L137 encePairwiseOnDemand]: 93/107 looper letters, 824 selfloop transitions, 858 changer transitions 11/1761 dead transitions. [2022-11-18 20:01:10,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1761 transitions, 30238 flow [2022-11-18 20:01:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:01:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:01:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3457 transitions. [2022-11-18 20:01:10,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8077102803738317 [2022-11-18 20:01:10,495 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3457 transitions. [2022-11-18 20:01:10,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3457 transitions. [2022-11-18 20:01:10,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:10,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3457 transitions. [2022-11-18 20:01:10,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 86.425) internal successors, (3457), 40 states have internal predecessors, (3457), 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) [2022-11-18 20:01:10,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 107.0) internal successors, (4387), 41 states have internal predecessors, (4387), 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) [2022-11-18 20:01:10,514 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 107.0) internal successors, (4387), 41 states have internal predecessors, (4387), 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) [2022-11-18 20:01:10,515 INFO L175 Difference]: Start difference. First operand has 246 places, 564 transitions, 8691 flow. Second operand 40 states and 3457 transitions. [2022-11-18 20:01:10,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1761 transitions, 30238 flow [2022-11-18 20:01:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1761 transitions, 29312 flow, removed 463 selfloop flow, removed 0 redundant places. [2022-11-18 20:01:15,545 INFO L231 Difference]: Finished difference. Result has 320 places, 1197 transitions, 22676 flow [2022-11-18 20:01:15,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=8323, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=22676, PETRI_PLACES=320, PETRI_TRANSITIONS=1197} [2022-11-18 20:01:15,547 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 224 predicate places. [2022-11-18 20:01:15,547 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1197 transitions, 22676 flow [2022-11-18 20:01:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 78.0) internal successors, (1560), 20 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:15,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:15,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:15,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:15,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:01:15,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:01:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash -71209545, now seen corresponding path program 11 times [2022-11-18 20:01:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:15,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835351089] [2022-11-18 20:01:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835351089] [2022-11-18 20:01:16,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835351089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144672397] [2022-11-18 20:01:16,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:01:16,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:16,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:16,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:01:16,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:01:16,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:16,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:01:16,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:16,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:19,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144672397] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:19,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:19,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 11 [2022-11-18 20:01:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099522096] [2022-11-18 20:01:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:01:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:01:19,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:01:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:01:19,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2022-11-18 20:01:19,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1197 transitions, 22676 flow. Second operand has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 20:01:19,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:19,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2022-11-18 20:01:19,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:01:28,994 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([269] L57-3-->L57-4: Formula: (= v_thread3Thread1of1ForFork0_~i~2_9 (+ |v_thread3Thread1of1ForFork0_#t~post3_3| 1)) InVars {thread3Thread1of1ForFork0_#t~post3=|v_thread3Thread1of1ForFork0_#t~post3_3|} OutVars{thread3Thread1of1ForFork0_~i~2=v_thread3Thread1of1ForFork0_~i~2_9, thread3Thread1of1ForFork0_#t~post3=|v_thread3Thread1of1ForFork0_#t~post3_3|} AuxVars[] AssignedVars[thread3Thread1of1ForFork0_~i~2][769], [60#L74-4true, 3632#(= thread2Thread1of1ForFork2_~i~1 0), Black: 3447#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 3625#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 4134#(and (forall ((aux_mod_~a~0_21 Int)) (or (< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 aux_mod_~a~0_21)) 4294967296) 4294967296) (* 4294967295 aux_mod_~a~0_21)) (<= aux_mod_~a~0_21 (mod thread1Thread1of1ForFork1_~i~0 4294967296)) (>= aux_mod_~a~0_21 4294967296))) (< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296) (* 4294967295 ~a~0))), Black: 3953#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 4138#(and (forall ((aux_mod_~a~0_21 Int)) (or (< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 aux_mod_~a~0_21)) 4294967296) 4294967296) (* 4294967295 aux_mod_~a~0_21)) (<= aux_mod_~a~0_21 (mod thread1Thread1of1ForFork1_~i~0 4294967296)) (>= aux_mod_~a~0_21 4294967296))) (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0))), Black: 3654#(or (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296))) (and (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~a~0 (* (div ~b~0 4294967296) 4294967296))) (= thread3Thread1of1ForFork0_~i~2 0))), Black: 3928#(< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)), Black: 3957#(< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296) (* 4294967295 ~a~0)), Black: 3796#(and (< 0 (mod ~a~0 4294967296)) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 3792#(and (= thread1Thread1of1ForFork1_~i~0 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 3833#(and (< 0 (mod ~a~0 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), 637#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296))), Black: 3994#(forall ((aux_mod_~a~0_21 Int)) (or (< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 aux_mod_~a~0_21)) 4294967296) 4294967296) (* 4294967295 aux_mod_~a~0_21)) (<= aux_mod_~a~0_21 (mod thread1Thread1of1ForFork1_~i~0 4294967296)) (>= aux_mod_~a~0_21 4294967296))), Black: 3651#(= thread1Thread1of1ForFork1_~i~0 0), Black: 3633#(and (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 3131#(and (< (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* (div ~b~0 4294967296) 4294967296)) ~b~0) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0)), Black: 3640#(and (<= 0 (+ (* (div (- ~a~0) 4294967296) 4294967296) ~a~0)) (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 3128#(and (or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div ~a~0 4294967296) 4294967296) ~b~0)) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0)), Black: 3638#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 2973#(< (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* (div ~b~0 4294967296) 4294967296)) ~b~0), Black: 3133#(and (< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296)) (< (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* (div ~b~0 4294967296) 4294967296)) ~b~0)), 1163#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))), Black: 2960#(< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296)), Black: 3125#(and (or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div ~a~0 4294967296) 4294967296) ~b~0)) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))) (< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296))), Black: 2646#true, Black: 2650#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div ~a~0 4294967296) 4294967296) ~b~0)) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))), Black: 2616#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (< 0 (mod ~b~0 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 2618#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ (* (div ~a~0 4294967296) 4294967296) thread2Thread1of1ForFork2_~i~1 (* (div ~b~0 4294967296) 4294967296) 1) (+ (* 4294967296 (div thread2Thread1of1ForFork2_~i~1 4294967296)) ~b~0 ~a~0))), Black: 2623#(and (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 2136#(= thread1Thread1of1ForFork1_~i~0 0), Black: 2633#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 2614#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 2631#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 2611#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0)), Black: 1945#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 2629#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0) (<= (+ (* (div ~a~0 4294967296) 4294967296) thread2Thread1of1ForFork2_~i~1 (* (div ~b~0 4294967296) 4294967296) 1) (+ (* 4294967296 (div thread2Thread1of1ForFork2_~i~1 4294967296)) ~b~0 ~a~0)) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 2625#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 2127#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 2627#(and (<= ~a~0 (* (div ~a~0 4294967296) 4294967296)) (< 0 (mod ~b~0 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4642#(and (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4702#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (not (< 1 (mod ~a~0 4294967296))) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4690#(and (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4688#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4679#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), 2652#(<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0), Black: 4156#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4307#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1127#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296))), Black: 4654#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (not (< 1 (mod ~a~0 4294967296))) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4692#(and (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 971#(< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296) (* 4294967295 ~a~0)), Black: 4686#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (or (< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0)))), Black: 4155#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4696#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1465#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 1123#(and (or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))) (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296))), Black: 967#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 1643#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296))), Black: 4669#(and (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1641#(and (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod 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~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4657#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (not (< 1 (mod ~a~0 4294967296))) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4640#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4675#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (= 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Black: 155#true, Black: 635#(and (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0))), 118#(= ~x_2~0 0), 2140#(<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)), Black: 146#(and (<= (+ (* 4294967296 (div thread2Thread1of1ForFork2_~i~1 4294967296)) ~b~0 ~a~0) (+ (* (div ~a~0 4294967296) 4294967296) (* (div ~b~0 4294967296) 4294967296))) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), 39#L49-6true, Black: 134#(= thread3Thread1of1ForFork0_~i~2 0), Black: 144#(and (<= (+ ~b~0 ~a~0) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296))) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), 3148#(or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))), Black: 142#(and (<= (+ ~b~0 ~a~0) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296))) (= thread3Thread1of1ForFork0_~i~2 0)), 4634#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), 62#L57-4true, 3649#true, 113#true, 1145#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), 652#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))), 17#L41-4true]) [2022-11-18 20:01:28,995 INFO L383 tUnfolder$Statistics]: this new event has 60 ancestors and is cut-off event [2022-11-18 20:01:28,996 INFO L386 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-11-18 20:01:28,996 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 20:01:28,996 INFO L386 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-11-18 20:01:30,439 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([243] L41-5-->L41-6: Formula: (not (< (mod v_thread1Thread1of1ForFork1_~i~0_3 4294967296) (mod v_~a~0_1 4294967296))) InVars {~a~0=v_~a~0_1, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_3} OutVars{~a~0=v_~a~0_1, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_3} AuxVars[] AssignedVars[][51], [60#L74-4true, 21#L57-3true, Black: 3447#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 3625#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ 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4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1137#(= thread2Thread1of1ForFork2_~i~1 0), Black: 4677#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 119#(and (= ~x_2~0 0) (= ~x_1~0 0)), Black: 159#(or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))), Black: 4673#(and (or (<= (div (+ ~b~0 ~a~0) 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4294967296))) (= thread3Thread1of1ForFork0_~i~2 0)), 3638#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), 3649#true, 2418#(< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)), 113#true, 1145#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), 652#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296)))]) [2022-11-18 20:01:30,440 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 20:01:30,440 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 20:01:30,440 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 20:01:30,440 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 20:01:30,441 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([244] L41-5-->L42: Formula: (< (mod v_thread1Thread1of1ForFork1_~i~0_5 4294967296) (mod v_~a~0_2 4294967296)) InVars {~a~0=v_~a~0_2, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_5} OutVars{~a~0=v_~a~0_2, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_5} AuxVars[] AssignedVars[][123], [60#L74-4true, 21#L57-3true, Black: 3447#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 3625#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 4134#(and 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~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), 2125#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296))), Black: 4679#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4156#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 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thread2Thread1of1ForFork2_~i~1 0)), Black: 971#(< (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296) (* 4294967295 ~a~0)), Black: 4686#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (or (< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0)))), Black: 4155#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4696#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1465#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 1123#(and (or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))) (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296))), Black: 967#(< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)), Black: 1643#(and (< (+ (mod thread2Thread1of1ForFork2_~i~1 4294967296) (* (div (+ (mod thread3Thread1of1ForFork0_~i~2 4294967296) (* 4294967295 ~a~0)) 4294967296) 4294967296)) (* 4294967295 ~a~0)) (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296))), Black: 4669#(and (= thread1Thread1of1ForFork1_~i~0 0) (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1641#(and (< (mod thread2Thread1of1ForFork2_~i~1 4294967296) (mod ~b~0 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0))), Black: 4634#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 4294967296) 4294967296) 1) (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)))) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 1469#(< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0)), Black: 4151#true, Black: 4431#(< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)), Black: 4647#(and (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), 4745#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))), Black: 4694#(and (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4638#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4651#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4700#(and (not (< 0 (mod ~b~0 4294967296))) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (not (< 1 (mod ~a~0 4294967296))) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4153#(= thread2Thread1of1ForFork2_~i~1 0), Black: 4662#(and (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4657#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (<= (+ (* (div ~a~0 4294967296) 4294967296) 1) ~a~0) (not (< 1 (mod ~a~0 4294967296))) (= thread1Thread1of1ForFork1_~i~0 1) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4640#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (= |thread1Thread1of1ForFork1_#t~post1| 0) (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4675#(and (<= (+ (* (div ~a~0 4294967296) 4294967296) thread1Thread1of1ForFork1_~i~0 1) (+ (* (div thread1Thread1of1ForFork1_~i~0 4294967296) 4294967296) ~a~0)) (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ (* (div thread3Thread1of1ForFork0_~i~2 4294967296) 4294967296) ~b~0 ~a~0)) (= thread1Thread1of1ForFork1_~i~0 0) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 4157#(<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)), Black: 4683#(and (<= (div (+ ~b~0 ~a~0) 4294967296) (div (+ (- 1) ~b~0 ~a~0) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), Black: 4665#(and (or (< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296)) (< (+ (* (div (* 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4294967296) ~b~0 ~a~0)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 454#(< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0)), Black: 1150#(and (<= 0 (+ (* (div (- ~a~0) 4294967296) 4294967296) ~a~0)) (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 1148#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0) (= thread3Thread1of1ForFork0_~i~2 0)), Black: 155#true, Black: 635#(and (< (mod thread3Thread1of1ForFork0_~i~2 4294967296) (mod (+ ~b~0 ~a~0) 4294967296)) (< (+ (* (div (* 4294967295 ~a~0) 4294967296) 4294967296) (mod thread2Thread1of1ForFork2_~i~1 4294967296)) (* 4294967295 ~a~0))), 134#(= thread3Thread1of1ForFork0_~i~2 0), 4671#(and (or (<= (div (+ ~b~0 ~a~0) 4294967296) (+ (div ~b~0 4294967296) (div (+ (- 1) ~a~0) 4294967296))) (<= (+ ~a~0 (* (div ~b~0 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1145#(and (<= ~b~0 (* (div ~b~0 4294967296) 4294967296)) (= thread2Thread1of1ForFork2_~i~1 0)), 69#L42true, 652#(or (<= (+ (* 4294967296 (div (+ ~b~0 ~a~0) 4294967296)) 1) (+ ~a~0 (* (div ~b~0 4294967296) 4294967296))) (<= (+ (div ~b~0 4294967296) (div ~a~0 4294967296) 1) (div (+ ~b~0 ~a~0) 4294967296))), 2960#(< (mod thread1Thread1of1ForFork1_~i~0 4294967296) (mod ~a~0 4294967296))]) [2022-11-18 20:01:30,442 INFO L383 tUnfolder$Statistics]: this new event has 61 ancestors and is cut-off event [2022-11-18 20:01:30,442 INFO L386 tUnfolder$Statistics]: existing Event has 61 ancestors and is cut-off event [2022-11-18 20:01:30,442 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 20:01:30,442 INFO L386 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-11-18 20:01:34,079 INFO L130 PetriNetUnfolder]: 14147/30034 cut-off events. [2022-11-18 20:01:34,079 INFO L131 PetriNetUnfolder]: For 648812/650453 co-relation queries the response was YES. [2022-11-18 20:01:34,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201898 conditions, 30034 events. 14147/30034 cut-off events. For 648812/650453 co-relation queries the response was YES. Maximal size of possible extension queue 2057. Compared 329800 event pairs, 2230 based on Foata normal form. 445/29329 useless extension candidates. Maximal degree in co-relation 201789. Up to 5668 conditions per place. [2022-11-18 20:01:34,985 INFO L137 encePairwiseOnDemand]: 99/107 looper letters, 1030 selfloop transitions, 405 changer transitions 6/1636 dead transitions. [2022-11-18 20:01:34,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1636 transitions, 33035 flow [2022-11-18 20:01:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:01:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:01:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-11-18 20:01:34,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8570093457943925 [2022-11-18 20:01:34,998 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-11-18 20:01:34,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-11-18 20:01:34,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:01:34,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-11-18 20:01:35,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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) [2022-11-18 20:01:35,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 20:01:35,014 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2022-11-18 20:01:35,014 INFO L175 Difference]: Start difference. First operand has 320 places, 1197 transitions, 22676 flow. Second operand 10 states and 917 transitions. [2022-11-18 20:01:35,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1636 transitions, 33035 flow [2022-11-18 20:01:44,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1636 transitions, 31997 flow, removed 519 selfloop flow, removed 0 redundant places. [2022-11-18 20:01:44,446 INFO L231 Difference]: Finished difference. Result has 330 places, 1212 transitions, 23190 flow [2022-11-18 20:01:44,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=21916, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23190, PETRI_PLACES=330, PETRI_TRANSITIONS=1212} [2022-11-18 20:01:44,448 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 234 predicate places. [2022-11-18 20:01:44,448 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 1212 transitions, 23190 flow [2022-11-18 20:01:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2022-11-18 20:01:44,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:01:44,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:44,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:01:44,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:01:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -599247323, now seen corresponding path program 12 times [2022-11-18 20:01:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308876478] [2022-11-18 20:01:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:44,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:45,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:45,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308876478] [2022-11-18 20:01:45,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308876478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542661748] [2022-11-18 20:01:45,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:01:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:45,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:45,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:01:45,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:01:45,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:01:45,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:46,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:46,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542661748] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:46,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:01:46,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2022-11-18 20:01:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376853588] [2022-11-18 20:01:46,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:46,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:01:46,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:01:46,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:01:46,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 107 [2022-11-18 20:01:46,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1212 transitions, 23190 flow. Second operand has 21 states, 21 states have (on average 77.85714285714286) internal successors, (1635), 21 states have internal predecessors, (1635), 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) [2022-11-18 20:01:46,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:01:46,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 107 [2022-11-18 20:01:46,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:02:06,538 INFO L130 PetriNetUnfolder]: 17153/35984 cut-off events. [2022-11-18 20:02:06,538 INFO L131 PetriNetUnfolder]: For 749080/749191 co-relation queries the response was YES. [2022-11-18 20:02:06,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242902 conditions, 35984 events. 17153/35984 cut-off events. For 749080/749191 co-relation queries the response was YES. Maximal size of possible extension queue 2276. Compared 393835 event pairs, 2268 based on Foata normal form. 53/35591 useless extension candidates. Maximal degree in co-relation 242791. Up to 6763 conditions per place. [2022-11-18 20:02:07,519 INFO L137 encePairwiseOnDemand]: 92/107 looper letters, 1352 selfloop transitions, 1046 changer transitions 6/2472 dead transitions. [2022-11-18 20:02:07,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 2472 transitions, 51218 flow [2022-11-18 20:02:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:02:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:02:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2692 transitions. [2022-11-18 20:02:07,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7862149532710281 [2022-11-18 20:02:07,525 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2692 transitions. [2022-11-18 20:02:07,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2692 transitions. [2022-11-18 20:02:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:02:07,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2692 transitions. [2022-11-18 20:02:07,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 84.125) internal successors, (2692), 32 states have internal predecessors, (2692), 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) [2022-11-18 20:02:07,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 107.0) internal successors, (3531), 33 states have internal predecessors, (3531), 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) [2022-11-18 20:02:07,568 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 107.0) internal successors, (3531), 33 states have internal predecessors, (3531), 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) [2022-11-18 20:02:07,568 INFO L175 Difference]: Start difference. First operand has 330 places, 1212 transitions, 23190 flow. Second operand 32 states and 2692 transitions. [2022-11-18 20:02:07,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 2472 transitions, 51218 flow [2022-11-18 20:02:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 2472 transitions, 50069 flow, removed 166 selfloop flow, removed 5 redundant places. [2022-11-18 20:02:17,067 INFO L231 Difference]: Finished difference. Result has 377 places, 1694 transitions, 36045 flow [2022-11-18 20:02:17,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=22598, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=36045, PETRI_PLACES=377, PETRI_TRANSITIONS=1694} [2022-11-18 20:02:17,068 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 281 predicate places. [2022-11-18 20:02:17,069 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1694 transitions, 36045 flow [2022-11-18 20:02:17,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 77.85714285714286) internal successors, (1635), 21 states have internal predecessors, (1635), 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) [2022-11-18 20:02:17,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:02:17,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:17,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:17,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95c9bb15-4ca9-475d-8f03-3c0d1afee37f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:02:17,276 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:02:17,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:17,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2044467113, now seen corresponding path program 3 times [2022-11-18 20:02:17,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:02:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374768769] [2022-11-18 20:02:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:02:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:17,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374768769] [2022-11-18 20:02:17,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374768769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:02:17,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:02:17,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:02:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739591517] [2022-11-18 20:02:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:02:17,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:02:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:17,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:02:17,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:02:17,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2022-11-18 20:02:17,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1694 transitions, 36045 flow. Second operand has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 7 states have internal predecessors, (558), 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) [2022-11-18 20:02:17,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:02:17,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2022-11-18 20:02:17,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand