./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a --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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- 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-b5237d8 [2022-11-21 16:52:23,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:52:23,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:52:23,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:52:23,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:52:23,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:52:23,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:52:23,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:52:23,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:52:23,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:52:23,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:52:23,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:52:23,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:52:23,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:52:23,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:52:23,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:52:23,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:52:23,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:52:23,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:52:23,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:52:23,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:52:23,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:52:23,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:52:23,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:52:23,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:52:23,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:52:23,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:52:23,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:52:23,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:52:23,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:52:23,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:52:23,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:52:23,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:52:23,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:52:23,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:52:23,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:52:23,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:52:23,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:52:23,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:52:23,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:52:23,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:52:23,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:52:23,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:52:23,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:52:23,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:52:23,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:52:23,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:52:23,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:52:23,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:52:23,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:52:23,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:52:23,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:52:23,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:52:23,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:52:23,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:52:23,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:52:23,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:52:23,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:52:23,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:52:23,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:52:23,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:52:23,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:52:23,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:52:23,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:52:23,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:52:23,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:52:23,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:52:23,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:52:23,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:52:23,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:52:23,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:52:23,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:52:23,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:52:23,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:52:23,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:52:23,494 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_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2022-11-21 16:52:23,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:52:23,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:52:23,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:52:23,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:52:23,786 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:52:23,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-11-21 16:52:27,044 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:52:27,324 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:52:27,325 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2022-11-21 16:52:27,340 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/data/072438f52/6fecde49bd2b4fe0a2fd17b68e20fa64/FLAG1712f7a9e [2022-11-21 16:52:27,360 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/data/072438f52/6fecde49bd2b4fe0a2fd17b68e20fa64 [2022-11-21 16:52:27,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:52:27,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:52:27,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:52:27,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:52:27,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:52:27,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:52:27" (1/1) ... [2022-11-21 16:52:27,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb07878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:27, skipping insertion in model container [2022-11-21 16:52:27,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:52:27" (1/1) ... [2022-11-21 16:52:27,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:52:27,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:52:27,597 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-11-21 16:52:27,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:52:27,927 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:52:27,943 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2022-11-21 16:52:28,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:52:28,065 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:52:28,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28 WrapperNode [2022-11-21 16:52:28,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:52:28,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:52:28,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:52:28,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:52:28,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,151 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2022-11-21 16:52:28,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:52:28,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:52:28,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:52:28,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:52:28,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,214 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:52:28,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:52:28,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:52:28,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:52:28,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (1/1) ... [2022-11-21 16:52:28,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:52:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:52:28,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:52:28,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a54933-8529-43f7-af16-b0cebd527dc8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:52:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:52:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:52:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:52:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:52:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:52:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 16:52:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 16:52:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 16:52:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 16:52:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-21 16:52:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-21 16:52:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-21 16:52:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-21 16:52:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:52:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:52:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:52:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:52:28,308 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:52:28,488 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:52:28,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:52:28,887 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:52:29,013 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:52:29,013 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:52:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:52:29 BoogieIcfgContainer [2022-11-21 16:52:29,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:52:29,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:52:29,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:52:29,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:52:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:52:27" (1/3) ... [2022-11-21 16:52:29,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3cb040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:52:29, skipping insertion in model container [2022-11-21 16:52:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:28" (2/3) ... [2022-11-21 16:52:29,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3cb040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:52:29, skipping insertion in model container [2022-11-21 16:52:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:52:29" (3/3) ... [2022-11-21 16:52:29,024 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2022-11-21 16:52:29,033 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:52:29,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:52:29,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 16:52:29,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:52:29,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 16:52:29,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-11-21 16:52:29,264 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-11-21 16:52:29,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:52:29,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-21 16:52:29,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-11-21 16:52:29,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-11-21 16:52:29,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:52:29,305 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;@47f7e869, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:52:29,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-21 16:52:29,325 INFO L130 PetriNetUnfolder]: 0/90 cut-off events. [2022-11-21 16:52:29,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:52:29,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:29,327 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] [2022-11-21 16:52:29,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1020769699, now seen corresponding path program 1 times [2022-11-21 16:52:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742141846] [2022-11-21 16:52:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742141846] [2022-11-21 16:52:30,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742141846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:30,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:30,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:52:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117754597] [2022-11-21 16:52:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:30,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:52:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:52:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:52:30,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 137 [2022-11-21 16:52:30,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:30,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:30,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 137 [2022-11-21 16:52:30,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:30,352 INFO L130 PetriNetUnfolder]: 17/277 cut-off events. [2022-11-21 16:52:30,352 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 16:52:30,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 277 events. 17/277 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 827 event pairs, 7 based on Foata normal form. 9/275 useless extension candidates. Maximal degree in co-relation 275. Up to 27 conditions per place. [2022-11-21 16:52:30,356 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 11 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2022-11-21 16:52:30,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 302 flow [2022-11-21 16:52:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:52:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:52:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-21 16:52:30,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2022-11-21 16:52:30,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-21 16:52:30,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-21 16:52:30,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:30,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-21 16:52:30,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:30,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:30,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:30,402 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 387 transitions. [2022-11-21 16:52:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 302 flow [2022-11-21 16:52:30,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:52:30,409 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-11-21 16:52:30,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-21 16:52:30,420 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-11-21 16:52:30,420 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-11-21 16:52:30,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:30,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:30,421 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] [2022-11-21 16:52:30,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:52:30,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash 890165960, now seen corresponding path program 1 times [2022-11-21 16:52:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:30,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214635025] [2022-11-21 16:52:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:31,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214635025] [2022-11-21 16:52:31,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214635025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:31,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:31,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:52:31,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902529559] [2022-11-21 16:52:31,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:31,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:52:31,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:52:31,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:52:31,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 137 [2022-11-21 16:52:31,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:31,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:31,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 137 [2022-11-21 16:52:31,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:33,483 INFO L130 PetriNetUnfolder]: 2580/6381 cut-off events. [2022-11-21 16:52:33,484 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-11-21 16:52:33,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10317 conditions, 6381 events. 2580/6381 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 57296 event pairs, 338 based on Foata normal form. 0/6246 useless extension candidates. Maximal degree in co-relation 10250. Up to 1450 conditions per place. [2022-11-21 16:52:33,528 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 39 selfloop transitions, 9 changer transitions 89/221 dead transitions. [2022-11-21 16:52:33,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 221 transitions, 708 flow [2022-11-21 16:52:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:52:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:52:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1440 transitions. [2022-11-21 16:52:33,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8085345311622684 [2022-11-21 16:52:33,537 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1440 transitions. [2022-11-21 16:52:33,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1440 transitions. [2022-11-21 16:52:33,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:33,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1440 transitions. [2022-11-21 16:52:33,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.76923076923077) internal successors, (1440), 13 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:33,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:33,548 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:33,549 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1440 transitions. [2022-11-21 16:52:33,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 221 transitions, 708 flow [2022-11-21 16:52:33,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:52:33,556 INFO L231 Difference]: Finished difference. Result has 162 places, 122 transitions, 360 flow [2022-11-21 16:52:33,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=360, PETRI_PLACES=162, PETRI_TRANSITIONS=122} [2022-11-21 16:52:33,558 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-11-21 16:52:33,558 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 122 transitions, 360 flow [2022-11-21 16:52:33,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:33,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:33,559 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] [2022-11-21 16:52:33,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:52:33,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1351829307, now seen corresponding path program 1 times [2022-11-21 16:52:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:33,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377535947] [2022-11-21 16:52:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:34,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377535947] [2022-11-21 16:52:34,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377535947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:34,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:34,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:52:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60080868] [2022-11-21 16:52:34,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:52:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:52:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:52:34,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 137 [2022-11-21 16:52:34,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 122 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:34,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:34,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 137 [2022-11-21 16:52:34,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:35,691 INFO L130 PetriNetUnfolder]: 1694/3640 cut-off events. [2022-11-21 16:52:35,691 INFO L131 PetriNetUnfolder]: For 9022/10429 co-relation queries the response was YES. [2022-11-21 16:52:35,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12652 conditions, 3640 events. 1694/3640 cut-off events. For 9022/10429 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 26930 event pairs, 280 based on Foata normal form. 73/3619 useless extension candidates. Maximal degree in co-relation 12573. Up to 1465 conditions per place. [2022-11-21 16:52:35,726 INFO L137 encePairwiseOnDemand]: 121/137 looper letters, 42 selfloop transitions, 20 changer transitions 64/210 dead transitions. [2022-11-21 16:52:35,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 210 transitions, 1234 flow [2022-11-21 16:52:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:52:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:52:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1436 transitions. [2022-11-21 16:52:35,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8062886019090398 [2022-11-21 16:52:35,731 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1436 transitions. [2022-11-21 16:52:35,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1436 transitions. [2022-11-21 16:52:35,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:35,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1436 transitions. [2022-11-21 16:52:35,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.46153846153847) internal successors, (1436), 13 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,741 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,741 INFO L175 Difference]: Start difference. First operand has 162 places, 122 transitions, 360 flow. Second operand 13 states and 1436 transitions. [2022-11-21 16:52:35,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 210 transitions, 1234 flow [2022-11-21 16:52:35,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 210 transitions, 1182 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-21 16:52:35,779 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 507 flow [2022-11-21 16:52:35,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=507, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2022-11-21 16:52:35,780 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 14 predicate places. [2022-11-21 16:52:35,780 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 507 flow [2022-11-21 16:52:35,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:35,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:35,781 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] [2022-11-21 16:52:35,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:52:35,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1955058002, now seen corresponding path program 1 times [2022-11-21 16:52:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:35,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084199185] [2022-11-21 16:52:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:37,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:37,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084199185] [2022-11-21 16:52:37,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084199185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:37,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:37,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:52:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373238085] [2022-11-21 16:52:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:52:37,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:52:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:52:37,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 137 [2022-11-21 16:52:37,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 507 flow. Second operand has 11 states, 11 states have (on average 112.63636363636364) internal successors, (1239), 11 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:37,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:37,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 137 [2022-11-21 16:52:37,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:37,941 INFO L130 PetriNetUnfolder]: 1004/2331 cut-off events. [2022-11-21 16:52:37,941 INFO L131 PetriNetUnfolder]: For 8732/11497 co-relation queries the response was YES. [2022-11-21 16:52:37,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9107 conditions, 2331 events. 1004/2331 cut-off events. For 8732/11497 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17188 event pairs, 448 based on Foata normal form. 117/2344 useless extension candidates. Maximal degree in co-relation 9021. Up to 1045 conditions per place. [2022-11-21 16:52:37,970 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 27 selfloop transitions, 12 changer transitions 31/174 dead transitions. [2022-11-21 16:52:37,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 174 transitions, 959 flow [2022-11-21 16:52:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:52:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 16:52:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1717 transitions. [2022-11-21 16:52:37,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355231143552312 [2022-11-21 16:52:37,977 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1717 transitions. [2022-11-21 16:52:37,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1717 transitions. [2022-11-21 16:52:37,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:37,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1717 transitions. [2022-11-21 16:52:37,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:37,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:37,989 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 137.0) internal successors, (2192), 16 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:37,989 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 507 flow. Second operand 15 states and 1717 transitions. [2022-11-21 16:52:37,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 174 transitions, 959 flow [2022-11-21 16:52:38,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 174 transitions, 905 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-11-21 16:52:38,027 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 578 flow [2022-11-21 16:52:38,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2022-11-21 16:52:38,029 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-21 16:52:38,029 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 578 flow [2022-11-21 16:52:38,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.63636363636364) internal successors, (1239), 11 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:38,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:38,030 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] [2022-11-21 16:52:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:52:38,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash -42887060, now seen corresponding path program 1 times [2022-11-21 16:52:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459765761] [2022-11-21 16:52:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:38,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459765761] [2022-11-21 16:52:38,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459765761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:38,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:38,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:52:38,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023672869] [2022-11-21 16:52:38,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:38,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:52:38,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:52:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:52:38,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 137 [2022-11-21 16:52:38,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 578 flow. Second operand has 11 states, 11 states have (on average 103.36363636363636) internal successors, (1137), 11 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:38,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:38,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 137 [2022-11-21 16:52:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:40,868 INFO L130 PetriNetUnfolder]: 1378/3095 cut-off events. [2022-11-21 16:52:40,868 INFO L131 PetriNetUnfolder]: For 12787/17209 co-relation queries the response was YES. [2022-11-21 16:52:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13526 conditions, 3095 events. 1378/3095 cut-off events. For 12787/17209 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 22282 event pairs, 147 based on Foata normal form. 64/3066 useless extension candidates. Maximal degree in co-relation 13432. Up to 1300 conditions per place. [2022-11-21 16:52:40,913 INFO L137 encePairwiseOnDemand]: 118/137 looper letters, 54 selfloop transitions, 56 changer transitions 50/244 dead transitions. [2022-11-21 16:52:40,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 244 transitions, 1975 flow [2022-11-21 16:52:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:52:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:52:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1732 transitions. [2022-11-21 16:52:40,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901459854014599 [2022-11-21 16:52:40,918 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1732 transitions. [2022-11-21 16:52:40,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1732 transitions. [2022-11-21 16:52:40,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:40,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1732 transitions. [2022-11-21 16:52:40,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 108.25) internal successors, (1732), 16 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:40,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:40,932 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:40,932 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 578 flow. Second operand 16 states and 1732 transitions. [2022-11-21 16:52:40,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 244 transitions, 1975 flow [2022-11-21 16:52:40,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 244 transitions, 1945 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-21 16:52:40,969 INFO L231 Difference]: Finished difference. Result has 169 places, 176 transitions, 1207 flow [2022-11-21 16:52:40,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1207, PETRI_PLACES=169, PETRI_TRANSITIONS=176} [2022-11-21 16:52:40,973 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 25 predicate places. [2022-11-21 16:52:40,973 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 176 transitions, 1207 flow [2022-11-21 16:52:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.36363636363636) internal successors, (1137), 11 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:40,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:40,974 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] [2022-11-21 16:52:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:52:40,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -886841546, now seen corresponding path program 2 times [2022-11-21 16:52:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682981168] [2022-11-21 16:52:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682981168] [2022-11-21 16:52:41,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682981168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:41,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:41,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 16:52:41,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794254009] [2022-11-21 16:52:41,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:41,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:52:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:52:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:52:41,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 137 [2022-11-21 16:52:41,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 176 transitions, 1207 flow. Second operand has 12 states, 12 states have (on average 112.58333333333333) internal successors, (1351), 12 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:41,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:41,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 137 [2022-11-21 16:52:41,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:42,997 INFO L130 PetriNetUnfolder]: 1111/2604 cut-off events. [2022-11-21 16:52:42,997 INFO L131 PetriNetUnfolder]: For 23633/43771 co-relation queries the response was YES. [2022-11-21 16:52:43,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14077 conditions, 2604 events. 1111/2604 cut-off events. For 23633/43771 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19386 event pairs, 310 based on Foata normal form. 266/2755 useless extension candidates. Maximal degree in co-relation 13980. Up to 1212 conditions per place. [2022-11-21 16:52:43,039 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 38 selfloop transitions, 30 changer transitions 16/205 dead transitions. [2022-11-21 16:52:43,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 205 transitions, 1779 flow [2022-11-21 16:52:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:52:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:52:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1262 transitions. [2022-11-21 16:52:43,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8374253483742535 [2022-11-21 16:52:43,043 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1262 transitions. [2022-11-21 16:52:43,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1262 transitions. [2022-11-21 16:52:43,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:43,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1262 transitions. [2022-11-21 16:52:43,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.72727272727273) internal successors, (1262), 11 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:43,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:43,051 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:43,052 INFO L175 Difference]: Start difference. First operand has 169 places, 176 transitions, 1207 flow. Second operand 11 states and 1262 transitions. [2022-11-21 16:52:43,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 205 transitions, 1779 flow [2022-11-21 16:52:43,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 205 transitions, 1690 flow, removed 41 selfloop flow, removed 2 redundant places. [2022-11-21 16:52:43,087 INFO L231 Difference]: Finished difference. Result has 175 places, 186 transitions, 1377 flow [2022-11-21 16:52:43,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1377, PETRI_PLACES=175, PETRI_TRANSITIONS=186} [2022-11-21 16:52:43,088 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 31 predicate places. [2022-11-21 16:52:43,089 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 186 transitions, 1377 flow [2022-11-21 16:52:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.58333333333333) internal successors, (1351), 12 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:43,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:43,090 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] [2022-11-21 16:52:43,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:52:43,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -265533290, now seen corresponding path program 3 times [2022-11-21 16:52:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:43,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276478627] [2022-11-21 16:52:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:43,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276478627] [2022-11-21 16:52:44,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276478627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:44,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:44,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 16:52:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283712338] [2022-11-21 16:52:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:44,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:52:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:52:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:52:44,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 137 [2022-11-21 16:52:44,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 186 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 103.36363636363636) internal successors, (1137), 11 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:44,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:44,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 137 [2022-11-21 16:52:44,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:46,107 INFO L130 PetriNetUnfolder]: 1423/3328 cut-off events. [2022-11-21 16:52:46,108 INFO L131 PetriNetUnfolder]: For 30584/46429 co-relation queries the response was YES. [2022-11-21 16:52:46,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18832 conditions, 3328 events. 1423/3328 cut-off events. For 30584/46429 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 25242 event pairs, 139 based on Foata normal form. 270/3490 useless extension candidates. Maximal degree in co-relation 18725. Up to 1340 conditions per place. [2022-11-21 16:52:46,160 INFO L137 encePairwiseOnDemand]: 118/137 looper letters, 69 selfloop transitions, 63 changer transitions 64/280 dead transitions. [2022-11-21 16:52:46,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 280 transitions, 3155 flow [2022-11-21 16:52:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:52:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:52:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1943 transitions. [2022-11-21 16:52:46,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7879156528791565 [2022-11-21 16:52:46,166 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1943 transitions. [2022-11-21 16:52:46,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1943 transitions. [2022-11-21 16:52:46,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:46,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1943 transitions. [2022-11-21 16:52:46,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.94444444444444) internal successors, (1943), 18 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:46,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 137.0) internal successors, (2603), 19 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:46,179 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 137.0) internal successors, (2603), 19 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:46,179 INFO L175 Difference]: Start difference. First operand has 175 places, 186 transitions, 1377 flow. Second operand 18 states and 1943 transitions. [2022-11-21 16:52:46,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 280 transitions, 3155 flow [2022-11-21 16:52:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 280 transitions, 3054 flow, removed 27 selfloop flow, removed 13 redundant places. [2022-11-21 16:52:46,239 INFO L231 Difference]: Finished difference. Result has 188 places, 200 transitions, 1799 flow [2022-11-21 16:52:46,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1799, PETRI_PLACES=188, PETRI_TRANSITIONS=200} [2022-11-21 16:52:46,240 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 44 predicate places. [2022-11-21 16:52:46,241 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 200 transitions, 1799 flow [2022-11-21 16:52:46,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.36363636363636) internal successors, (1137), 11 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:46,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:46,242 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] [2022-11-21 16:52:46,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:52:46,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:46,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1501443034, now seen corresponding path program 4 times [2022-11-21 16:52:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:46,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566438458] [2022-11-21 16:52:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:46,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566438458] [2022-11-21 16:52:46,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566438458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:46,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:46,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:52:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219231183] [2022-11-21 16:52:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:52:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:52:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:52:46,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 137 [2022-11-21 16:52:46,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 200 transitions, 1799 flow. Second operand has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:46,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:46,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 137 [2022-11-21 16:52:46,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:47,658 INFO L130 PetriNetUnfolder]: 1059/2608 cut-off events. [2022-11-21 16:52:47,659 INFO L131 PetriNetUnfolder]: For 36194/50651 co-relation queries the response was YES. [2022-11-21 16:52:47,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16304 conditions, 2608 events. 1059/2608 cut-off events. For 36194/50651 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19929 event pairs, 293 based on Foata normal form. 309/2791 useless extension candidates. Maximal degree in co-relation 16199. Up to 1141 conditions per place. [2022-11-21 16:52:47,697 INFO L137 encePairwiseOnDemand]: 128/137 looper letters, 51 selfloop transitions, 34 changer transitions 31/248 dead transitions. [2022-11-21 16:52:47,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 248 transitions, 2977 flow [2022-11-21 16:52:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:52:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:52:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1302 transitions. [2022-11-21 16:52:47,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8639681486396815 [2022-11-21 16:52:47,701 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1302 transitions. [2022-11-21 16:52:47,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1302 transitions. [2022-11-21 16:52:47,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:47,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1302 transitions. [2022-11-21 16:52:47,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.36363636363636) internal successors, (1302), 11 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:47,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:47,709 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:47,710 INFO L175 Difference]: Start difference. First operand has 188 places, 200 transitions, 1799 flow. Second operand 11 states and 1302 transitions. [2022-11-21 16:52:47,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 248 transitions, 2977 flow [2022-11-21 16:52:47,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 248 transitions, 2772 flow, removed 90 selfloop flow, removed 7 redundant places. [2022-11-21 16:52:47,798 INFO L231 Difference]: Finished difference. Result has 189 places, 206 transitions, 1992 flow [2022-11-21 16:52:47,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1992, PETRI_PLACES=189, PETRI_TRANSITIONS=206} [2022-11-21 16:52:47,801 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 45 predicate places. [2022-11-21 16:52:47,801 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 206 transitions, 1992 flow [2022-11-21 16:52:47,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:47,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:47,802 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] [2022-11-21 16:52:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:52:47,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash 426934021, now seen corresponding path program 1 times [2022-11-21 16:52:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279483370] [2022-11-21 16:52:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279483370] [2022-11-21 16:52:48,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279483370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:48,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:48,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 16:52:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706656080] [2022-11-21 16:52:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:52:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:48,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:52:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:52:48,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-11-21 16:52:48,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 206 transitions, 1992 flow. Second operand has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:48,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:48,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-11-21 16:52:48,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:49,784 INFO L130 PetriNetUnfolder]: 924/2350 cut-off events. [2022-11-21 16:52:49,785 INFO L131 PetriNetUnfolder]: For 31132/45560 co-relation queries the response was YES. [2022-11-21 16:52:49,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14649 conditions, 2350 events. 924/2350 cut-off events. For 31132/45560 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17916 event pairs, 293 based on Foata normal form. 209/2412 useless extension candidates. Maximal degree in co-relation 14570. Up to 1001 conditions per place. [2022-11-21 16:52:49,823 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 49 selfloop transitions, 34 changer transitions 13/224 dead transitions. [2022-11-21 16:52:49,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 224 transitions, 2542 flow [2022-11-21 16:52:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:52:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:52:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1583 transitions. [2022-11-21 16:52:49,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8253388946819604 [2022-11-21 16:52:49,828 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1583 transitions. [2022-11-21 16:52:49,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1583 transitions. [2022-11-21 16:52:49,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:49,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1583 transitions. [2022-11-21 16:52:49,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 113.07142857142857) internal successors, (1583), 14 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,838 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,838 INFO L175 Difference]: Start difference. First operand has 189 places, 206 transitions, 1992 flow. Second operand 14 states and 1583 transitions. [2022-11-21 16:52:49,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 224 transitions, 2542 flow [2022-11-21 16:52:49,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 224 transitions, 2454 flow, removed 26 selfloop flow, removed 12 redundant places. [2022-11-21 16:52:49,908 INFO L231 Difference]: Finished difference. Result has 191 places, 208 transitions, 2111 flow [2022-11-21 16:52:49,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2111, PETRI_PLACES=191, PETRI_TRANSITIONS=208} [2022-11-21 16:52:49,909 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 47 predicate places. [2022-11-21 16:52:49,909 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 208 transitions, 2111 flow [2022-11-21 16:52:49,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:49,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:49,911 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] [2022-11-21 16:52:49,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:52:49,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -653483797, now seen corresponding path program 2 times [2022-11-21 16:52:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617949938] [2022-11-21 16:52:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:51,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617949938] [2022-11-21 16:52:51,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617949938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:51,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:51,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 16:52:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653695334] [2022-11-21 16:52:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:51,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:52:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:52:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:52:51,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 137 [2022-11-21 16:52:51,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 208 transitions, 2111 flow. Second operand has 13 states, 13 states have (on average 110.6923076923077) internal successors, (1439), 13 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:51,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 137 [2022-11-21 16:52:51,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:51,783 INFO L130 PetriNetUnfolder]: 982/2580 cut-off events. [2022-11-21 16:52:51,783 INFO L131 PetriNetUnfolder]: For 35618/63544 co-relation queries the response was YES. [2022-11-21 16:52:51,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16047 conditions, 2580 events. 982/2580 cut-off events. For 35618/63544 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21039 event pairs, 296 based on Foata normal form. 209/2665 useless extension candidates. Maximal degree in co-relation 15934. Up to 1065 conditions per place. [2022-11-21 16:52:51,827 INFO L137 encePairwiseOnDemand]: 124/137 looper letters, 64 selfloop transitions, 23 changer transitions 13/227 dead transitions. [2022-11-21 16:52:51,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 227 transitions, 2763 flow [2022-11-21 16:52:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:52:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:52:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2022-11-21 16:52:51,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8190823774765381 [2022-11-21 16:52:51,831 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2022-11-21 16:52:51,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2022-11-21 16:52:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2022-11-21 16:52:51,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,840 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 137.0) internal successors, (2055), 15 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,840 INFO L175 Difference]: Start difference. First operand has 191 places, 208 transitions, 2111 flow. Second operand 14 states and 1571 transitions. [2022-11-21 16:52:51,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 227 transitions, 2763 flow [2022-11-21 16:52:51,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 227 transitions, 2605 flow, removed 58 selfloop flow, removed 12 redundant places. [2022-11-21 16:52:51,944 INFO L231 Difference]: Finished difference. Result has 193 places, 210 transitions, 2171 flow [2022-11-21 16:52:51,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2171, PETRI_PLACES=193, PETRI_TRANSITIONS=210} [2022-11-21 16:52:51,945 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 49 predicate places. [2022-11-21 16:52:51,945 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 210 transitions, 2171 flow [2022-11-21 16:52:51,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 110.6923076923077) internal successors, (1439), 13 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:51,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:51,954 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] [2022-11-21 16:52:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:52:51,956 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:51,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2051711307, now seen corresponding path program 3 times [2022-11-21 16:52:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:51,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850701266] [2022-11-21 16:52:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:51,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850701266] [2022-11-21 16:52:53,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850701266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:53,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:53,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 16:52:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794661267] [2022-11-21 16:52:53,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:53,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:52:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:52:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:52:53,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 137 [2022-11-21 16:52:53,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 210 transitions, 2171 flow. Second operand has 13 states, 13 states have (on average 101.23076923076923) internal successors, (1316), 13 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:53,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:53,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 137 [2022-11-21 16:52:53,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:54,947 INFO L130 PetriNetUnfolder]: 1439/3547 cut-off events. [2022-11-21 16:52:54,947 INFO L131 PetriNetUnfolder]: For 51390/66706 co-relation queries the response was YES. [2022-11-21 16:52:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23520 conditions, 3547 events. 1439/3547 cut-off events. For 51390/66706 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 28916 event pairs, 140 based on Foata normal form. 266/3696 useless extension candidates. Maximal degree in co-relation 23401. Up to 1423 conditions per place. [2022-11-21 16:52:55,008 INFO L137 encePairwiseOnDemand]: 117/137 looper letters, 104 selfloop transitions, 75 changer transitions 80/341 dead transitions. [2022-11-21 16:52:55,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 341 transitions, 5117 flow [2022-11-21 16:52:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:52:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:52:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2116 transitions. [2022-11-21 16:52:55,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7722627737226277 [2022-11-21 16:52:55,013 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2116 transitions. [2022-11-21 16:52:55,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2116 transitions. [2022-11-21 16:52:55,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:55,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2116 transitions. [2022-11-21 16:52:55,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 105.8) internal successors, (2116), 20 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:55,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 137.0) internal successors, (2877), 21 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:55,023 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 137.0) internal successors, (2877), 21 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:55,023 INFO L175 Difference]: Start difference. First operand has 193 places, 210 transitions, 2171 flow. Second operand 20 states and 2116 transitions. [2022-11-21 16:52:55,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 341 transitions, 5117 flow [2022-11-21 16:52:55,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 341 transitions, 4892 flow, removed 89 selfloop flow, removed 12 redundant places. [2022-11-21 16:52:55,141 INFO L231 Difference]: Finished difference. Result has 208 places, 241 transitions, 3014 flow [2022-11-21 16:52:55,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3014, PETRI_PLACES=208, PETRI_TRANSITIONS=241} [2022-11-21 16:52:55,142 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 64 predicate places. [2022-11-21 16:52:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 241 transitions, 3014 flow [2022-11-21 16:52:55,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.23076923076923) internal successors, (1316), 13 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:55,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:55,144 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] [2022-11-21 16:52:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:52:55,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1288915365, now seen corresponding path program 4 times [2022-11-21 16:52:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:55,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495003545] [2022-11-21 16:52:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:55,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495003545] [2022-11-21 16:52:56,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495003545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:56,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 16:52:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078973013] [2022-11-21 16:52:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:52:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:52:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:52:56,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 137 [2022-11-21 16:52:56,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 241 transitions, 3014 flow. Second operand has 13 states, 13 states have (on average 112.53846153846153) internal successors, (1463), 13 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:56,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:56,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 137 [2022-11-21 16:52:56,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:52:57,733 INFO L130 PetriNetUnfolder]: 1567/4137 cut-off events. [2022-11-21 16:52:57,733 INFO L131 PetriNetUnfolder]: For 84901/109708 co-relation queries the response was YES. [2022-11-21 16:52:57,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30828 conditions, 4137 events. 1567/4137 cut-off events. For 84901/109708 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37580 event pairs, 447 based on Foata normal form. 377/4385 useless extension candidates. Maximal degree in co-relation 30704. Up to 1669 conditions per place. [2022-11-21 16:52:57,798 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 102 selfloop transitions, 53 changer transitions 13/313 dead transitions. [2022-11-21 16:52:57,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 313 transitions, 4782 flow [2022-11-21 16:52:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:52:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:52:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1952 transitions. [2022-11-21 16:52:57,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8381279519106913 [2022-11-21 16:52:57,802 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1952 transitions. [2022-11-21 16:52:57,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1952 transitions. [2022-11-21 16:52:57,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:52:57,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1952 transitions. [2022-11-21 16:52:57,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 114.82352941176471) internal successors, (1952), 17 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,817 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,817 INFO L175 Difference]: Start difference. First operand has 208 places, 241 transitions, 3014 flow. Second operand 17 states and 1952 transitions. [2022-11-21 16:52:57,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 313 transitions, 4782 flow [2022-11-21 16:52:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 313 transitions, 4661 flow, removed 55 selfloop flow, removed 7 redundant places. [2022-11-21 16:52:57,977 INFO L231 Difference]: Finished difference. Result has 219 places, 270 transitions, 3793 flow [2022-11-21 16:52:57,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3793, PETRI_PLACES=219, PETRI_TRANSITIONS=270} [2022-11-21 16:52:57,978 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 75 predicate places. [2022-11-21 16:52:57,979 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 270 transitions, 3793 flow [2022-11-21 16:52:57,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 112.53846153846153) internal successors, (1463), 13 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:57,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:52:57,980 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] [2022-11-21 16:52:57,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:52:57,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:52:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1607775963, now seen corresponding path program 1 times [2022-11-21 16:52:57,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:57,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625134053] [2022-11-21 16:52:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:57,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:58,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:58,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625134053] [2022-11-21 16:52:58,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625134053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:58,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:58,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:52:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463037111] [2022-11-21 16:52:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:58,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:52:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:52:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:52:58,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-21 16:52:58,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 270 transitions, 3793 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:52:58,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:52:58,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-21 16:52:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:05,407 INFO L130 PetriNetUnfolder]: 16654/29835 cut-off events. [2022-11-21 16:53:05,408 INFO L131 PetriNetUnfolder]: For 851887/935465 co-relation queries the response was YES. [2022-11-21 16:53:05,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172380 conditions, 29835 events. 16654/29835 cut-off events. For 851887/935465 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 286748 event pairs, 1008 based on Foata normal form. 3319/30981 useless extension candidates. Maximal degree in co-relation 172253. Up to 10414 conditions per place. [2022-11-21 16:53:05,982 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 244 selfloop transitions, 20 changer transitions 106/522 dead transitions. [2022-11-21 16:53:05,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 522 transitions, 10420 flow [2022-11-21 16:53:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:53:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:53:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1204 transitions. [2022-11-21 16:53:05,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8788321167883212 [2022-11-21 16:53:05,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1204 transitions. [2022-11-21 16:53:05,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1204 transitions. [2022-11-21 16:53:05,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:05,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1204 transitions. [2022-11-21 16:53:05,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.4) internal successors, (1204), 10 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,991 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:05,991 INFO L175 Difference]: Start difference. First operand has 219 places, 270 transitions, 3793 flow. Second operand 10 states and 1204 transitions. [2022-11-21 16:53:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 522 transitions, 10420 flow [2022-11-21 16:53:07,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 522 transitions, 10132 flow, removed 140 selfloop flow, removed 10 redundant places. [2022-11-21 16:53:07,318 INFO L231 Difference]: Finished difference. Result has 218 places, 283 transitions, 3779 flow [2022-11-21 16:53:07,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3779, PETRI_PLACES=218, PETRI_TRANSITIONS=283} [2022-11-21 16:53:07,319 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-11-21 16:53:07,319 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 283 transitions, 3779 flow [2022-11-21 16:53:07,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:07,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:07,320 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] [2022-11-21 16:53:07,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:53:07,320 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:53:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1000425231, now seen corresponding path program 1 times [2022-11-21 16:53:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333839559] [2022-11-21 16:53:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:07,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:07,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333839559] [2022-11-21 16:53:07,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333839559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:07,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:07,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:53:07,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210297845] [2022-11-21 16:53:07,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:53:07,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:53:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:53:07,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-21 16:53:07,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 283 transitions, 3779 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:07,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:07,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-21 16:53:07,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:14,944 INFO L130 PetriNetUnfolder]: 15462/28879 cut-off events. [2022-11-21 16:53:14,945 INFO L131 PetriNetUnfolder]: For 714870/771673 co-relation queries the response was YES. [2022-11-21 16:53:15,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183300 conditions, 28879 events. 15462/28879 cut-off events. For 714870/771673 co-relation queries the response was YES. Maximal size of possible extension queue 2295. Compared 289764 event pairs, 639 based on Foata normal form. 4016/31598 useless extension candidates. Maximal degree in co-relation 183174. Up to 8775 conditions per place. [2022-11-21 16:53:15,266 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 276 selfloop transitions, 38 changer transitions 157/614 dead transitions. [2022-11-21 16:53:15,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 614 transitions, 12528 flow [2022-11-21 16:53:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:53:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:53:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1568 transitions. [2022-11-21 16:53:15,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804042672655812 [2022-11-21 16:53:15,281 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1568 transitions. [2022-11-21 16:53:15,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1568 transitions. [2022-11-21 16:53:15,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:15,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1568 transitions. [2022-11-21 16:53:15,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.61538461538461) internal successors, (1568), 13 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,289 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:15,289 INFO L175 Difference]: Start difference. First operand has 218 places, 283 transitions, 3779 flow. Second operand 13 states and 1568 transitions. [2022-11-21 16:53:15,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 614 transitions, 12528 flow [2022-11-21 16:53:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 614 transitions, 12255 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:53:16,861 INFO L231 Difference]: Finished difference. Result has 233 places, 276 transitions, 3380 flow [2022-11-21 16:53:16,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3380, PETRI_PLACES=233, PETRI_TRANSITIONS=276} [2022-11-21 16:53:16,862 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 89 predicate places. [2022-11-21 16:53:16,862 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 276 transitions, 3380 flow [2022-11-21 16:53:16,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:16,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:16,863 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] [2022-11-21 16:53:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:53:16,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:53:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash 791245232, now seen corresponding path program 1 times [2022-11-21 16:53:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:16,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455308030] [2022-11-21 16:53:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:17,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:17,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455308030] [2022-11-21 16:53:17,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455308030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:17,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:17,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:53:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74714859] [2022-11-21 16:53:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:53:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:53:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:53:17,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 137 [2022-11-21 16:53:17,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 276 transitions, 3380 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:17,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:17,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 137 [2022-11-21 16:53:17,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:20,682 INFO L130 PetriNetUnfolder]: 4570/15751 cut-off events. [2022-11-21 16:53:20,683 INFO L131 PetriNetUnfolder]: For 128944/147808 co-relation queries the response was YES. [2022-11-21 16:53:20,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73753 conditions, 15751 events. 4570/15751 cut-off events. For 128944/147808 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 215724 event pairs, 557 based on Foata normal form. 693/15298 useless extension candidates. Maximal degree in co-relation 73622. Up to 4726 conditions per place. [2022-11-21 16:53:20,920 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 123 selfloop transitions, 26 changer transitions 42/357 dead transitions. [2022-11-21 16:53:20,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 357 transitions, 5551 flow [2022-11-21 16:53:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:53:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:53:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1084 transitions. [2022-11-21 16:53:20,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791565287915653 [2022-11-21 16:53:20,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1084 transitions. [2022-11-21 16:53:20,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1084 transitions. [2022-11-21 16:53:20,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:20,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1084 transitions. [2022-11-21 16:53:20,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.44444444444444) internal successors, (1084), 9 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:20,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:20,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:20,930 INFO L175 Difference]: Start difference. First operand has 233 places, 276 transitions, 3380 flow. Second operand 9 states and 1084 transitions. [2022-11-21 16:53:20,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 357 transitions, 5551 flow [2022-11-21 16:53:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 357 transitions, 5456 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-21 16:53:23,733 INFO L231 Difference]: Finished difference. Result has 244 places, 275 transitions, 3391 flow [2022-11-21 16:53:23,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3391, PETRI_PLACES=244, PETRI_TRANSITIONS=275} [2022-11-21 16:53:23,734 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 100 predicate places. [2022-11-21 16:53:23,734 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 275 transitions, 3391 flow [2022-11-21 16:53:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:23,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:23,735 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] [2022-11-21 16:53:23,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:53:23,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:53:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1271242792, now seen corresponding path program 1 times [2022-11-21 16:53:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:23,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686418258] [2022-11-21 16:53:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:24,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686418258] [2022-11-21 16:53:24,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686418258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:24,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:24,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:53:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982943288] [2022-11-21 16:53:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:24,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:53:24,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:53:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:53:24,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-21 16:53:24,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 275 transitions, 3391 flow. Second operand has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:24,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:24,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-21 16:53:24,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:33,828 INFO L130 PetriNetUnfolder]: 19771/38365 cut-off events. [2022-11-21 16:53:33,828 INFO L131 PetriNetUnfolder]: For 1025768/1131820 co-relation queries the response was YES. [2022-11-21 16:53:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245016 conditions, 38365 events. 19771/38365 cut-off events. For 1025768/1131820 co-relation queries the response was YES. Maximal size of possible extension queue 3125. Compared 419342 event pairs, 382 based on Foata normal form. 5914/42571 useless extension candidates. Maximal degree in co-relation 244879. Up to 7776 conditions per place. [2022-11-21 16:53:34,652 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 175 selfloop transitions, 56 changer transitions 256/612 dead transitions. [2022-11-21 16:53:34,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 612 transitions, 12350 flow [2022-11-21 16:53:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:53:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 16:53:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1931 transitions. [2022-11-21 16:53:34,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809306569343066 [2022-11-21 16:53:34,658 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1931 transitions. [2022-11-21 16:53:34,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1931 transitions. [2022-11-21 16:53:34,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:34,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1931 transitions. [2022-11-21 16:53:34,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,669 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:34,669 INFO L175 Difference]: Start difference. First operand has 244 places, 275 transitions, 3391 flow. Second operand 16 states and 1931 transitions. [2022-11-21 16:53:34,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 612 transitions, 12350 flow [2022-11-21 16:53:42,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 612 transitions, 10661 flow, removed 287 selfloop flow, removed 21 redundant places. [2022-11-21 16:53:42,649 INFO L231 Difference]: Finished difference. Result has 242 places, 226 transitions, 2108 flow [2022-11-21 16:53:42,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2108, PETRI_PLACES=242, PETRI_TRANSITIONS=226} [2022-11-21 16:53:42,650 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 98 predicate places. [2022-11-21 16:53:42,650 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 226 transitions, 2108 flow [2022-11-21 16:53:42,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:42,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:53:42,651 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] [2022-11-21 16:53:42,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:53:42,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:53:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash -236609888, now seen corresponding path program 1 times [2022-11-21 16:53:42,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:42,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265648502] [2022-11-21 16:53:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:43,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265648502] [2022-11-21 16:53:43,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265648502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:43,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:43,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:53:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659217712] [2022-11-21 16:53:43,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:53:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:53:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:53:43,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 137 [2022-11-21 16:53:43,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 226 transitions, 2108 flow. Second operand has 8 states, 8 states have (on average 103.0) internal successors, (824), 8 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:43,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:53:43,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 137 [2022-11-21 16:53:43,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:53:48,470 INFO L130 PetriNetUnfolder]: 8599/27356 cut-off events. [2022-11-21 16:53:48,470 INFO L131 PetriNetUnfolder]: For 184297/195755 co-relation queries the response was YES. [2022-11-21 16:53:48,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116877 conditions, 27356 events. 8599/27356 cut-off events. For 184297/195755 co-relation queries the response was YES. Maximal size of possible extension queue 3653. Compared 407284 event pairs, 179 based on Foata normal form. 37/25539 useless extension candidates. Maximal degree in co-relation 116738. Up to 7177 conditions per place. [2022-11-21 16:53:48,721 INFO L137 encePairwiseOnDemand]: 120/137 looper letters, 78 selfloop transitions, 30 changer transitions 92/344 dead transitions. [2022-11-21 16:53:48,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 344 transitions, 4516 flow [2022-11-21 16:53:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:53:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:53:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 989 transitions. [2022-11-21 16:53:48,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021086780210868 [2022-11-21 16:53:48,724 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 989 transitions. [2022-11-21 16:53:48,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 989 transitions. [2022-11-21 16:53:48,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:53:48,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 989 transitions. [2022-11-21 16:53:48,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.88888888888889) internal successors, (989), 9 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:48,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:48,729 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:48,729 INFO L175 Difference]: Start difference. First operand has 242 places, 226 transitions, 2108 flow. Second operand 9 states and 989 transitions. [2022-11-21 16:53:48,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 344 transitions, 4516 flow [2022-11-21 16:54:10,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 344 transitions, 3693 flow, removed 301 selfloop flow, removed 33 redundant places. [2022-11-21 16:54:10,211 INFO L231 Difference]: Finished difference. Result has 216 places, 225 transitions, 1725 flow [2022-11-21 16:54:10,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1725, PETRI_PLACES=216, PETRI_TRANSITIONS=225} [2022-11-21 16:54:10,212 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 72 predicate places. [2022-11-21 16:54:10,212 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 225 transitions, 1725 flow [2022-11-21 16:54:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 103.0) internal successors, (824), 8 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:10,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:54:10,213 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] [2022-11-21 16:54:10,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:54:10,213 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-21 16:54:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1657487748, now seen corresponding path program 2 times [2022-11-21 16:54:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:10,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302235752] [2022-11-21 16:54:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:54:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:10,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302235752] [2022-11-21 16:54:10,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302235752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:10,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:10,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:54:10,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875070737] [2022-11-21 16:54:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:10,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:54:10,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:54:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:54:10,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-11-21 16:54:10,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 225 transitions, 1725 flow. Second operand has 9 states, 9 states have (on average 114.11111111111111) internal successors, (1027), 9 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:54:10,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:54:10,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-11-21 16:54:10,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand