./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:48:58,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:48:58,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:48:58,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:48:58,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:48:58,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:48:58,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:48:58,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:48:58,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:48:58,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:48:58,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:48:58,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:48:58,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:48:58,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:48:58,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:48:58,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:48:58,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:48:58,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:48:58,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:48:58,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:48:58,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:48:58,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:48:58,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:48:58,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:48:58,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:48:58,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:48:58,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:48:58,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:48:58,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:48:58,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:48:58,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:48:58,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:48:58,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:48:58,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:48:58,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:48:58,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:48:58,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:48:58,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:48:58,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:48:58,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:48:58,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:48:58,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:48:58,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:48:58,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:48:58,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:48:58,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:48:58,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:48:58,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:48:58,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:48:58,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:48:58,370 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:48:58,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:48:58,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:48:58,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:48:58,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:48:58,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:48:58,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:48:58,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:48:58,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:48:58,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:48:58,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:48:58,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:48:58,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:48:58,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:48:58,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:48:58,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:48:58,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:48:58,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:48:58,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:48:58,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:48:58,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:48:58,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:48:58,375 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:48:58,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:48:58,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:48:58,376 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_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2022-11-16 11:48:58,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:48:58,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:48:58,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:48:58,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:48:58,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:48:58,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-16 11:48:58,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/data/8a21738bd/7baa5e6f5927465bbcd57c93edf4bd9f/FLAG7a87b990c [2022-11-16 11:48:59,281 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:48:59,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-16 11:48:59,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/data/8a21738bd/7baa5e6f5927465bbcd57c93edf4bd9f/FLAG7a87b990c [2022-11-16 11:48:59,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/data/8a21738bd/7baa5e6f5927465bbcd57c93edf4bd9f [2022-11-16 11:48:59,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:48:59,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:48:59,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:48:59,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:48:59,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:48:59,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:48:59" (1/1) ... [2022-11-16 11:48:59,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6958e6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:59, skipping insertion in model container [2022-11-16 11:48:59,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:48:59" (1/1) ... [2022-11-16 11:48:59,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:48:59,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:48:59,848 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-16 11:49:00,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:00,094 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:49:00,107 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-16 11:49:00,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:49:00,224 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:49:00,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00 WrapperNode [2022-11-16 11:49:00,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:49:00,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:00,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:49:00,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:49:00,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,301 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2022-11-16 11:49:00,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:49:00,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:49:00,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:49:00,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:49:00,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:49:00,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:49:00,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:49:00,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:49:00,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (1/1) ... [2022-11-16 11:49:00,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:49:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:49:00,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:49:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f64596a-10cc-4fc1-9d3c-f0cad59d3dff/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:49:00,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:49:00,454 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 11:49:00,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 11:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 11:49:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 11:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 11:49:00,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 11:49:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-16 11:49:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-16 11:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:49:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:49:00,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:49:00,459 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:49:00,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:49:00,673 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:49:01,230 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:49:01,685 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:49:01,686 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:49:01,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:01 BoogieIcfgContainer [2022-11-16 11:49:01,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:49:01,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:49:01,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:49:01,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:49:01,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:48:59" (1/3) ... [2022-11-16 11:49:01,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ff5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:01, skipping insertion in model container [2022-11-16 11:49:01,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:49:00" (2/3) ... [2022-11-16 11:49:01,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ff5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:49:01, skipping insertion in model container [2022-11-16 11:49:01,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:49:01" (3/3) ... [2022-11-16 11:49:01,698 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2022-11-16 11:49:01,708 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:49:01,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:49:01,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:49:01,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:49:01,795 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:49:01,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 151 transitions, 322 flow [2022-11-16 11:49:01,934 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2022-11-16 11:49:01,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:49:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 2/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-16 11:49:01,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 151 transitions, 322 flow [2022-11-16 11:49:01,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 131 transitions, 274 flow [2022-11-16 11:49:01,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:49:01,965 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;@75995d94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:49:01,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 11:49:02,006 INFO L130 PetriNetUnfolder]: 1/130 cut-off events. [2022-11-16 11:49:02,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:49:02,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:02,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:02,015 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 2 more)] === [2022-11-16 11:49:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -40968357, now seen corresponding path program 1 times [2022-11-16 11:49:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:02,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739612646] [2022-11-16 11:49:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:02,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:03,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739612646] [2022-11-16 11:49:03,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739612646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:03,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:03,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:49:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094900872] [2022-11-16 11:49:03,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:03,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:03,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-16 11:49:03,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:03,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:03,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-16 11:49:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:04,740 INFO L130 PetriNetUnfolder]: 1780/3263 cut-off events. [2022-11-16 11:49:04,741 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-16 11:49:04,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5884 conditions, 3263 events. 1780/3263 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21148 event pairs, 412 based on Foata normal form. 86/3254 useless extension candidates. Maximal degree in co-relation 5807. Up to 1472 conditions per place. [2022-11-16 11:49:04,775 INFO L137 encePairwiseOnDemand]: 143/151 looper letters, 25 selfloop transitions, 3 changer transitions 49/187 dead transitions. [2022-11-16 11:49:04,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 187 transitions, 543 flow [2022-11-16 11:49:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:49:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-11-16 11:49:04,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9006622516556292 [2022-11-16 11:49:04,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-11-16 11:49:04,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-11-16 11:49:04,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:04,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-11-16 11:49:04,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:04,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:04,827 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:04,829 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 274 flow. Second operand 9 states and 1224 transitions. [2022-11-16 11:49:04,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 187 transitions, 543 flow [2022-11-16 11:49:04,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 538 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:49:04,842 INFO L231 Difference]: Finished difference. Result has 154 places, 132 transitions, 311 flow [2022-11-16 11:49:04,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=154, PETRI_TRANSITIONS=132} [2022-11-16 11:49:04,850 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2022-11-16 11:49:04,851 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 132 transitions, 311 flow [2022-11-16 11:49:04,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:04,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:04,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:04,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:49:04,853 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 2 more)] === [2022-11-16 11:49:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1277468284, now seen corresponding path program 1 times [2022-11-16 11:49:04,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:04,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860052454] [2022-11-16 11:49:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:05,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860052454] [2022-11-16 11:49:05,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860052454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:05,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:05,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:49:05,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737303336] [2022-11-16 11:49:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:05,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:05,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-16 11:49:05,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 132 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:05,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:05,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-16 11:49:05,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:06,489 INFO L130 PetriNetUnfolder]: 1158/2314 cut-off events. [2022-11-16 11:49:06,489 INFO L131 PetriNetUnfolder]: For 1549/1559 co-relation queries the response was YES. [2022-11-16 11:49:06,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5154 conditions, 2314 events. 1158/2314 cut-off events. For 1549/1559 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14803 event pairs, 593 based on Foata normal form. 60/2282 useless extension candidates. Maximal degree in co-relation 5072. Up to 801 conditions per place. [2022-11-16 11:49:06,512 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 24 selfloop transitions, 2 changer transitions 37/177 dead transitions. [2022-11-16 11:49:06,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 177 transitions, 551 flow [2022-11-16 11:49:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:49:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2022-11-16 11:49:06,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9021339220014717 [2022-11-16 11:49:06,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2022-11-16 11:49:06,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2022-11-16 11:49:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:06,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2022-11-16 11:49:06,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,526 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,526 INFO L175 Difference]: Start difference. First operand has 154 places, 132 transitions, 311 flow. Second operand 9 states and 1226 transitions. [2022-11-16 11:49:06,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 177 transitions, 551 flow [2022-11-16 11:49:06,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 177 transitions, 534 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 11:49:06,542 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 322 flow [2022-11-16 11:49:06,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2022-11-16 11:49:06,543 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 16 predicate places. [2022-11-16 11:49:06,543 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 322 flow [2022-11-16 11:49:06,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:06,545 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:49:06,545 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 2 more)] === [2022-11-16 11:49:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1104966949, now seen corresponding path program 1 times [2022-11-16 11:49:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:06,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952983379] [2022-11-16 11:49:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952983379] [2022-11-16 11:49:06,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952983379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:06,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:06,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:49:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450885717] [2022-11-16 11:49:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:06,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:49:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:49:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:49:06,954 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 151 [2022-11-16 11:49:06,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:06,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:06,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 151 [2022-11-16 11:49:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:08,050 INFO L130 PetriNetUnfolder]: 1340/2573 cut-off events. [2022-11-16 11:49:08,050 INFO L131 PetriNetUnfolder]: For 2908/2908 co-relation queries the response was YES. [2022-11-16 11:49:08,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 2573 events. 1340/2573 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16617 event pairs, 182 based on Foata normal form. 40/2506 useless extension candidates. Maximal degree in co-relation 6369. Up to 949 conditions per place. [2022-11-16 11:49:08,073 INFO L137 encePairwiseOnDemand]: 142/151 looper letters, 30 selfloop transitions, 5 changer transitions 28/172 dead transitions. [2022-11-16 11:49:08,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 615 flow [2022-11-16 11:49:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:49:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:49:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-11-16 11:49:08,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949858088930936 [2022-11-16 11:49:08,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-11-16 11:49:08,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-11-16 11:49:08,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:08,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-11-16 11:49:08,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,084 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 322 flow. Second operand 7 states and 946 transitions. [2022-11-16 11:49:08,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 615 flow [2022-11-16 11:49:08,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 172 transitions, 589 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-16 11:49:08,104 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 329 flow [2022-11-16 11:49:08,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2022-11-16 11:49:08,108 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-11-16 11:49:08,108 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 329 flow [2022-11-16 11:49:08,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:08,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:49:08,112 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 2 more)] === [2022-11-16 11:49:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 614460199, now seen corresponding path program 2 times [2022-11-16 11:49:08,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:08,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280528223] [2022-11-16 11:49:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:08,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:08,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280528223] [2022-11-16 11:49:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280528223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:08,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:08,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:49:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320302347] [2022-11-16 11:49:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:49:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:49:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:49:08,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-16 11:49:08,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:08,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:08,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-16 11:49:08,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:09,527 INFO L130 PetriNetUnfolder]: 679/1478 cut-off events. [2022-11-16 11:49:09,528 INFO L131 PetriNetUnfolder]: For 1199/1222 co-relation queries the response was YES. [2022-11-16 11:49:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 1478 events. 679/1478 cut-off events. For 1199/1222 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8912 event pairs, 251 based on Foata normal form. 32/1445 useless extension candidates. Maximal degree in co-relation 3252. Up to 557 conditions per place. [2022-11-16 11:49:09,545 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 20 selfloop transitions, 3 changer transitions 31/168 dead transitions. [2022-11-16 11:49:09,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 533 flow [2022-11-16 11:49:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:49:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:49:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2022-11-16 11:49:09,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8913907284768212 [2022-11-16 11:49:09,553 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2022-11-16 11:49:09,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2022-11-16 11:49:09,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:09,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2022-11-16 11:49:09,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,563 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,563 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 329 flow. Second operand 10 states and 1346 transitions. [2022-11-16 11:49:09,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 168 transitions, 533 flow [2022-11-16 11:49:09,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 168 transitions, 505 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-16 11:49:09,572 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 333 flow [2022-11-16 11:49:09,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-16 11:49:09,573 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-16 11:49:09,573 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 333 flow [2022-11-16 11:49:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:09,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:49:09,575 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 2 more)] === [2022-11-16 11:49:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1085960453, now seen corresponding path program 1 times [2022-11-16 11:49:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:09,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728900572] [2022-11-16 11:49:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:09,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728900572] [2022-11-16 11:49:09,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728900572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:09,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:09,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:49:09,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289374491] [2022-11-16 11:49:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:09,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:09,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-16 11:49:09,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:09,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:09,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-16 11:49:09,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:10,893 INFO L130 PetriNetUnfolder]: 1084/2237 cut-off events. [2022-11-16 11:49:10,893 INFO L131 PetriNetUnfolder]: For 2226/2234 co-relation queries the response was YES. [2022-11-16 11:49:10,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 2237 events. 1084/2237 cut-off events. For 2226/2234 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14665 event pairs, 398 based on Foata normal form. 40/2194 useless extension candidates. Maximal degree in co-relation 5219. Up to 656 conditions per place. [2022-11-16 11:49:10,914 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 30 selfloop transitions, 3 changer transitions 34/177 dead transitions. [2022-11-16 11:49:10,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 177 transitions, 633 flow [2022-11-16 11:49:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:49:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:49:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1211 transitions. [2022-11-16 11:49:10,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8910963944076526 [2022-11-16 11:49:10,918 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1211 transitions. [2022-11-16 11:49:10,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1211 transitions. [2022-11-16 11:49:10,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:10,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1211 transitions. [2022-11-16 11:49:10,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.55555555555554) internal successors, (1211), 9 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,926 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,926 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 333 flow. Second operand 9 states and 1211 transitions. [2022-11-16 11:49:10,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 177 transitions, 633 flow [2022-11-16 11:49:10,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 177 transitions, 579 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-16 11:49:10,942 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 336 flow [2022-11-16 11:49:10,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-16 11:49:10,944 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-16 11:49:10,944 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 336 flow [2022-11-16 11:49:10,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:10,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:10,945 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:49:10,945 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 2 more)] === [2022-11-16 11:49:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1325441496, now seen corresponding path program 1 times [2022-11-16 11:49:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:10,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882598131] [2022-11-16 11:49:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:11,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882598131] [2022-11-16 11:49:11,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882598131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:11,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:11,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:49:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770564781] [2022-11-16 11:49:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:11,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:49:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:49:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:49:11,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-16 11:49:11,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:11,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:11,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-16 11:49:11,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:13,852 INFO L130 PetriNetUnfolder]: 5684/9844 cut-off events. [2022-11-16 11:49:13,852 INFO L131 PetriNetUnfolder]: For 2706/2750 co-relation queries the response was YES. [2022-11-16 11:49:13,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 9844 events. 5684/9844 cut-off events. For 2706/2750 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 73830 event pairs, 245 based on Foata normal form. 0/9557 useless extension candidates. Maximal degree in co-relation 19880. Up to 3567 conditions per place. [2022-11-16 11:49:13,952 INFO L137 encePairwiseOnDemand]: 140/151 looper letters, 35 selfloop transitions, 7 changer transitions 55/206 dead transitions. [2022-11-16 11:49:13,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 206 transitions, 689 flow [2022-11-16 11:49:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:49:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:49:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1349 transitions. [2022-11-16 11:49:13,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8933774834437086 [2022-11-16 11:49:13,957 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1349 transitions. [2022-11-16 11:49:13,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1349 transitions. [2022-11-16 11:49:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:13,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1349 transitions. [2022-11-16 11:49:13,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:13,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:13,968 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:13,968 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 336 flow. Second operand 10 states and 1349 transitions. [2022-11-16 11:49:13,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 206 transitions, 689 flow [2022-11-16 11:49:13,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 206 transitions, 668 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-16 11:49:13,997 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-11-16 11:49:13,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-11-16 11:49:14,000 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 21 predicate places. [2022-11-16 11:49:14,000 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-11-16 11:49:14,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:14,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:14,001 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:49:14,002 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 2 more)] === [2022-11-16 11:49:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:14,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1556743541, now seen corresponding path program 1 times [2022-11-16 11:49:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:14,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889317062] [2022-11-16 11:49:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:14,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:16,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:16,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889317062] [2022-11-16 11:49:16,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889317062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:16,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:16,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:49:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726781314] [2022-11-16 11:49:16,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:16,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:49:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:49:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:49:16,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 151 [2022-11-16 11:49:16,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:16,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:16,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 151 [2022-11-16 11:49:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:18,761 INFO L130 PetriNetUnfolder]: 3705/9329 cut-off events. [2022-11-16 11:49:18,761 INFO L131 PetriNetUnfolder]: For 8468/8989 co-relation queries the response was YES. [2022-11-16 11:49:18,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 9329 events. 3705/9329 cut-off events. For 8468/8989 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 93386 event pairs, 1546 based on Foata normal form. 87/8869 useless extension candidates. Maximal degree in co-relation 23285. Up to 2292 conditions per place. [2022-11-16 11:49:18,866 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 54 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2022-11-16 11:49:18,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 184 transitions, 676 flow [2022-11-16 11:49:18,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:49:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:49:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1794 transitions. [2022-11-16 11:49:18,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920529801324503 [2022-11-16 11:49:18,873 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1794 transitions. [2022-11-16 11:49:18,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1794 transitions. [2022-11-16 11:49:18,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:18,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1794 transitions. [2022-11-16 11:49:18,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.6) internal successors, (1794), 15 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,886 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,886 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 15 states and 1794 transitions. [2022-11-16 11:49:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 184 transitions, 676 flow [2022-11-16 11:49:18,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 184 transitions, 661 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:18,920 INFO L231 Difference]: Finished difference. Result has 175 places, 166 transitions, 581 flow [2022-11-16 11:49:18,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=581, PETRI_PLACES=175, PETRI_TRANSITIONS=166} [2022-11-16 11:49:18,921 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-16 11:49:18,922 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 166 transitions, 581 flow [2022-11-16 11:49:18,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:18,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:18,924 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:49:18,924 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 2 more)] === [2022-11-16 11:49:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 317777945, now seen corresponding path program 2 times [2022-11-16 11:49:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606263077] [2022-11-16 11:49:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:21,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606263077] [2022-11-16 11:49:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606263077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:49:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448347264] [2022-11-16 11:49:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:49:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:49:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:49:21,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 151 [2022-11-16 11:49:21,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 166 transitions, 581 flow. Second operand has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:21,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:21,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 151 [2022-11-16 11:49:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:24,665 INFO L130 PetriNetUnfolder]: 5486/13516 cut-off events. [2022-11-16 11:49:24,665 INFO L131 PetriNetUnfolder]: For 22105/23458 co-relation queries the response was YES. [2022-11-16 11:49:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39529 conditions, 13516 events. 5486/13516 cut-off events. For 22105/23458 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 144347 event pairs, 2262 based on Foata normal form. 133/12637 useless extension candidates. Maximal degree in co-relation 39419. Up to 4498 conditions per place. [2022-11-16 11:49:24,846 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 100 selfloop transitions, 72 changer transitions 0/276 dead transitions. [2022-11-16 11:49:24,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 276 transitions, 1482 flow [2022-11-16 11:49:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:49:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:49:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2088 transitions. [2022-11-16 11:49:24,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8134008570315543 [2022-11-16 11:49:24,853 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2088 transitions. [2022-11-16 11:49:24,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2088 transitions. [2022-11-16 11:49:24,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:24,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2088 transitions. [2022-11-16 11:49:24,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 122.82352941176471) internal successors, (2088), 17 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:24,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:24,871 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:24,871 INFO L175 Difference]: Start difference. First operand has 175 places, 166 transitions, 581 flow. Second operand 17 states and 2088 transitions. [2022-11-16 11:49:24,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 276 transitions, 1482 flow [2022-11-16 11:49:24,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 276 transitions, 1465 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-16 11:49:24,992 INFO L231 Difference]: Finished difference. Result has 198 places, 245 transitions, 1299 flow [2022-11-16 11:49:24,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1299, PETRI_PLACES=198, PETRI_TRANSITIONS=245} [2022-11-16 11:49:24,996 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 55 predicate places. [2022-11-16 11:49:24,997 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 245 transitions, 1299 flow [2022-11-16 11:49:24,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:24,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:24,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:49:24,998 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 2 more)] === [2022-11-16 11:49:24,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash -943387495, now seen corresponding path program 3 times [2022-11-16 11:49:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:24,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529369521] [2022-11-16 11:49:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:28,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529369521] [2022-11-16 11:49:28,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529369521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:28,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:28,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-16 11:49:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276455500] [2022-11-16 11:49:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:49:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:49:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:49:28,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 151 [2022-11-16 11:49:28,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 245 transitions, 1299 flow. Second operand has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:28,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:28,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 151 [2022-11-16 11:49:28,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:32,739 INFO L130 PetriNetUnfolder]: 5730/14228 cut-off events. [2022-11-16 11:49:32,739 INFO L131 PetriNetUnfolder]: For 45956/48010 co-relation queries the response was YES. [2022-11-16 11:49:32,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50762 conditions, 14228 events. 5730/14228 cut-off events. For 45956/48010 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 153011 event pairs, 2678 based on Foata normal form. 37/13276 useless extension candidates. Maximal degree in co-relation 50631. Up to 5987 conditions per place. [2022-11-16 11:49:32,927 INFO L137 encePairwiseOnDemand]: 129/151 looper letters, 155 selfloop transitions, 42 changer transitions 34/322 dead transitions. [2022-11-16 11:49:32,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 322 transitions, 2302 flow [2022-11-16 11:49:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:49:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 11:49:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2587 transitions. [2022-11-16 11:49:32,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6589403973509934 [2022-11-16 11:49:32,935 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2587 transitions. [2022-11-16 11:49:32,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2587 transitions. [2022-11-16 11:49:32,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:32,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2587 transitions. [2022-11-16 11:49:32,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 99.5) internal successors, (2587), 26 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:32,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:32,962 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:32,970 INFO L175 Difference]: Start difference. First operand has 198 places, 245 transitions, 1299 flow. Second operand 26 states and 2587 transitions. [2022-11-16 11:49:32,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 322 transitions, 2302 flow [2022-11-16 11:49:33,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 2255 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-16 11:49:33,684 INFO L231 Difference]: Finished difference. Result has 232 places, 277 transitions, 1646 flow [2022-11-16 11:49:33,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1646, PETRI_PLACES=232, PETRI_TRANSITIONS=277} [2022-11-16 11:49:33,686 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 89 predicate places. [2022-11-16 11:49:33,686 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 277 transitions, 1646 flow [2022-11-16 11:49:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:33,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:33,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:33,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:49:33,688 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 2 more)] === [2022-11-16 11:49:33,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1339121561, now seen corresponding path program 4 times [2022-11-16 11:49:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500742558] [2022-11-16 11:49:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:37,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500742558] [2022-11-16 11:49:37,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500742558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:37,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:37,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-16 11:49:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919023359] [2022-11-16 11:49:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:37,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:49:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:49:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:49:37,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2022-11-16 11:49:37,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 277 transitions, 1646 flow. Second operand has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:37,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:37,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2022-11-16 11:49:37,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:44,324 INFO L130 PetriNetUnfolder]: 7064/17446 cut-off events. [2022-11-16 11:49:44,324 INFO L131 PetriNetUnfolder]: For 88084/90595 co-relation queries the response was YES. [2022-11-16 11:49:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68431 conditions, 17446 events. 7064/17446 cut-off events. For 88084/90595 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 192505 event pairs, 2524 based on Foata normal form. 153/16376 useless extension candidates. Maximal degree in co-relation 68284. Up to 6090 conditions per place. [2022-11-16 11:49:44,603 INFO L137 encePairwiseOnDemand]: 128/151 looper letters, 194 selfloop transitions, 122 changer transitions 19/429 dead transitions. [2022-11-16 11:49:44,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 429 transitions, 3747 flow [2022-11-16 11:49:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:49:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 11:49:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3913 transitions. [2022-11-16 11:49:44,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6819449285465319 [2022-11-16 11:49:44,611 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3913 transitions. [2022-11-16 11:49:44,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3913 transitions. [2022-11-16 11:49:44,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:44,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3913 transitions. [2022-11-16 11:49:44,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 102.97368421052632) internal successors, (3913), 38 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:44,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 151.0) internal successors, (5889), 39 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:44,633 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 151.0) internal successors, (5889), 39 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:44,634 INFO L175 Difference]: Start difference. First operand has 232 places, 277 transitions, 1646 flow. Second operand 38 states and 3913 transitions. [2022-11-16 11:49:44,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 429 transitions, 3747 flow [2022-11-16 11:49:45,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 429 transitions, 3634 flow, removed 48 selfloop flow, removed 12 redundant places. [2022-11-16 11:49:45,190 INFO L231 Difference]: Finished difference. Result has 264 places, 377 transitions, 3062 flow [2022-11-16 11:49:45,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3062, PETRI_PLACES=264, PETRI_TRANSITIONS=377} [2022-11-16 11:49:45,191 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 121 predicate places. [2022-11-16 11:49:45,191 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 377 transitions, 3062 flow [2022-11-16 11:49:45,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:45,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:49:45,193 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 2 more)] === [2022-11-16 11:49:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash 511173305, now seen corresponding path program 1 times [2022-11-16 11:49:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:45,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510445752] [2022-11-16 11:49:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:45,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:45,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510445752] [2022-11-16 11:49:45,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510445752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:45,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:45,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:49:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749906205] [2022-11-16 11:49:45,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:45,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:49:45,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:49:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:49:45,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-16 11:49:45,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 377 transitions, 3062 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:45,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:45,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-16 11:49:45,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:49:51,289 INFO L130 PetriNetUnfolder]: 10181/20549 cut-off events. [2022-11-16 11:49:51,289 INFO L131 PetriNetUnfolder]: For 133113/135593 co-relation queries the response was YES. [2022-11-16 11:49:51,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91134 conditions, 20549 events. 10181/20549 cut-off events. For 133113/135593 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 192728 event pairs, 249 based on Foata normal form. 730/20951 useless extension candidates. Maximal degree in co-relation 90994. Up to 6290 conditions per place. [2022-11-16 11:49:51,774 INFO L137 encePairwiseOnDemand]: 141/151 looper letters, 236 selfloop transitions, 21 changer transitions 195/620 dead transitions. [2022-11-16 11:49:51,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 620 transitions, 6226 flow [2022-11-16 11:49:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:49:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:49:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-11-16 11:49:51,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8920529801324504 [2022-11-16 11:49:51,778 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-11-16 11:49:51,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-11-16 11:49:51,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:49:51,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-11-16 11:49:51,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:51,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:51,787 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:51,787 INFO L175 Difference]: Start difference. First operand has 264 places, 377 transitions, 3062 flow. Second operand 10 states and 1347 transitions. [2022-11-16 11:49:51,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 620 transitions, 6226 flow [2022-11-16 11:49:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 620 transitions, 5555 flow, removed 311 selfloop flow, removed 15 redundant places. [2022-11-16 11:49:52,379 INFO L231 Difference]: Finished difference. Result has 259 places, 267 transitions, 1806 flow [2022-11-16 11:49:52,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1806, PETRI_PLACES=259, PETRI_TRANSITIONS=267} [2022-11-16 11:49:52,380 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 116 predicate places. [2022-11-16 11:49:52,380 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 267 transitions, 1806 flow [2022-11-16 11:49:52,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:52,381 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:49:52,381 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:49:52,382 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 2 more)] === [2022-11-16 11:49:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -685551046, now seen corresponding path program 1 times [2022-11-16 11:49:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704855063] [2022-11-16 11:49:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:52,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:49:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704855063] [2022-11-16 11:49:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704855063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:56,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-16 11:49:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258660301] [2022-11-16 11:49:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:49:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:49:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:49:56,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 151 [2022-11-16 11:49:56,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 267 transitions, 1806 flow. Second operand has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:49:56,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:49:56,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 151 [2022-11-16 11:49:56,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:01,494 INFO L130 PetriNetUnfolder]: 3976/11866 cut-off events. [2022-11-16 11:50:01,494 INFO L131 PetriNetUnfolder]: For 79688/83111 co-relation queries the response was YES. [2022-11-16 11:50:01,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51721 conditions, 11866 events. 3976/11866 cut-off events. For 79688/83111 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 136961 event pairs, 763 based on Foata normal form. 192/11587 useless extension candidates. Maximal degree in co-relation 51560. Up to 3922 conditions per place. [2022-11-16 11:50:01,666 INFO L137 encePairwiseOnDemand]: 127/151 looper letters, 152 selfloop transitions, 96 changer transitions 0/351 dead transitions. [2022-11-16 11:50:01,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 351 transitions, 3343 flow [2022-11-16 11:50:01,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:50:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:50:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3266 transitions. [2022-11-16 11:50:01,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6361511492014024 [2022-11-16 11:50:01,673 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3266 transitions. [2022-11-16 11:50:01,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3266 transitions. [2022-11-16 11:50:01,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:01,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3266 transitions. [2022-11-16 11:50:01,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 96.05882352941177) internal successors, (3266), 34 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:01,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:01,692 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:01,692 INFO L175 Difference]: Start difference. First operand has 259 places, 267 transitions, 1806 flow. Second operand 34 states and 3266 transitions. [2022-11-16 11:50:01,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 351 transitions, 3343 flow [2022-11-16 11:50:02,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 351 transitions, 3104 flow, removed 116 selfloop flow, removed 20 redundant places. [2022-11-16 11:50:02,645 INFO L231 Difference]: Finished difference. Result has 259 places, 319 transitions, 2618 flow [2022-11-16 11:50:02,646 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2618, PETRI_PLACES=259, PETRI_TRANSITIONS=319} [2022-11-16 11:50:02,646 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 116 predicate places. [2022-11-16 11:50:02,647 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 319 transitions, 2618 flow [2022-11-16 11:50:02,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:02,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:02,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:02,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:50:02,648 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 2 more)] === [2022-11-16 11:50:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash 213626932, now seen corresponding path program 2 times [2022-11-16 11:50:02,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:02,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337300895] [2022-11-16 11:50:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:05,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:05,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337300895] [2022-11-16 11:50:05,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337300895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:05,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:05,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:50:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863651321] [2022-11-16 11:50:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:50:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:50:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:05,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 151 [2022-11-16 11:50:05,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 319 transitions, 2618 flow. Second operand has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:05,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:05,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 151 [2022-11-16 11:50:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:09,491 INFO L130 PetriNetUnfolder]: 5258/15305 cut-off events. [2022-11-16 11:50:09,492 INFO L131 PetriNetUnfolder]: For 89961/91530 co-relation queries the response was YES. [2022-11-16 11:50:09,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61889 conditions, 15305 events. 5258/15305 cut-off events. For 89961/91530 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 184134 event pairs, 970 based on Foata normal form. 361/15005 useless extension candidates. Maximal degree in co-relation 61732. Up to 3556 conditions per place. [2022-11-16 11:50:09,715 INFO L137 encePairwiseOnDemand]: 133/151 looper letters, 167 selfloop transitions, 78 changer transitions 15/381 dead transitions. [2022-11-16 11:50:09,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 381 transitions, 3888 flow [2022-11-16 11:50:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:50:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:50:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2022-11-16 11:50:09,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7739514348785872 [2022-11-16 11:50:09,718 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2022-11-16 11:50:09,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2022-11-16 11:50:09,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:09,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2022-11-16 11:50:09,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:09,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:09,728 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:09,728 INFO L175 Difference]: Start difference. First operand has 259 places, 319 transitions, 2618 flow. Second operand 15 states and 1753 transitions. [2022-11-16 11:50:09,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 381 transitions, 3888 flow [2022-11-16 11:50:10,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 381 transitions, 3630 flow, removed 113 selfloop flow, removed 15 redundant places. [2022-11-16 11:50:10,641 INFO L231 Difference]: Finished difference. Result has 264 places, 334 transitions, 2832 flow [2022-11-16 11:50:10,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2832, PETRI_PLACES=264, PETRI_TRANSITIONS=334} [2022-11-16 11:50:10,642 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 121 predicate places. [2022-11-16 11:50:10,643 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 334 transitions, 2832 flow [2022-11-16 11:50:10,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:10,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:10,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:50:10,644 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 2 more)] === [2022-11-16 11:50:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1682629330, now seen corresponding path program 3 times [2022-11-16 11:50:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:10,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055327058] [2022-11-16 11:50:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:13,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055327058] [2022-11-16 11:50:13,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055327058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:13,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:13,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:50:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125948123] [2022-11-16 11:50:13,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:13,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:50:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:50:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:13,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 151 [2022-11-16 11:50:13,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 334 transitions, 2832 flow. Second operand has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:13,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:13,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 151 [2022-11-16 11:50:13,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:50:18,441 INFO L130 PetriNetUnfolder]: 6318/18406 cut-off events. [2022-11-16 11:50:18,441 INFO L131 PetriNetUnfolder]: For 112472/114465 co-relation queries the response was YES. [2022-11-16 11:50:18,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75550 conditions, 18406 events. 6318/18406 cut-off events. For 112472/114465 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 227437 event pairs, 1316 based on Foata normal form. 306/17902 useless extension candidates. Maximal degree in co-relation 75393. Up to 4402 conditions per place. [2022-11-16 11:50:18,763 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 148 selfloop transitions, 88 changer transitions 47/405 dead transitions. [2022-11-16 11:50:18,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 405 transitions, 4296 flow [2022-11-16 11:50:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:50:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:50:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1984 transitions. [2022-11-16 11:50:18,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7728866380989482 [2022-11-16 11:50:18,769 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1984 transitions. [2022-11-16 11:50:18,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1984 transitions. [2022-11-16 11:50:18,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:50:18,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1984 transitions. [2022-11-16 11:50:18,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.70588235294117) internal successors, (1984), 17 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:18,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:18,782 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:18,783 INFO L175 Difference]: Start difference. First operand has 264 places, 334 transitions, 2832 flow. Second operand 17 states and 1984 transitions. [2022-11-16 11:50:18,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 405 transitions, 4296 flow [2022-11-16 11:50:20,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 405 transitions, 4171 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-16 11:50:20,063 INFO L231 Difference]: Finished difference. Result has 280 places, 338 transitions, 3099 flow [2022-11-16 11:50:20,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3099, PETRI_PLACES=280, PETRI_TRANSITIONS=338} [2022-11-16 11:50:20,064 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 137 predicate places. [2022-11-16 11:50:20,065 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 338 transitions, 3099 flow [2022-11-16 11:50:20,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:20,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:50:20,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:50:20,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:50:20,066 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 2 more)] === [2022-11-16 11:50:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1998335592, now seen corresponding path program 4 times [2022-11-16 11:50:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:20,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447922504] [2022-11-16 11:50:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:20,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:50:23,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:23,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447922504] [2022-11-16 11:50:23,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447922504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:23,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:23,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-16 11:50:23,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18012152] [2022-11-16 11:50:23,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:23,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:50:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:23,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:50:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:50:23,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 151 [2022-11-16 11:50:23,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 338 transitions, 3099 flow. Second operand has 24 states, 24 states have (on average 95.75) internal successors, (2298), 24 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:50:23,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:50:23,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 151 [2022-11-16 11:50:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand